This README contains details about the cgminer RPC API It also includes some detailed information at the end, about using miner.php If you start cgminer with the "--api-listen" option, it will listen on a simple TCP/IP socket for single string API requests from the same machine running cgminer and reply with a string and then close the socket each time If you add the "--api-network" option, it will accept API requests from any network attached computer. You can only access the comands that reply with data in this mode. By default, you cannot access any privileged command that affects the miner - you will receive an access denied status message see --api-allow below. You can specify IP addresses/prefixes that are only allowed to access the API with the "--api-allow" option e.g. --api-allow W:192.168.0.1,10.0.0/24 will allow 192.168.0.1 or any address matching 10.0.0.*, but nothing else IP addresses are automatically padded with extra '.0's as needed Without a /prefix is the same as specifying /32 0/0 means all IP addresses. The 'W:' on the front gives that address/subnet privileged access to commands that modify cgminer (thus all API commands) Without it those commands return an access denied status. See --api-groups below to define other groups like W: Privileged access is checked in the order the IP addresses were supplied to "--api-allow" The first match determines the privilege level. Using the "--api-allow" option overides the "--api-network" option if they are both specified With "--api-allow", 127.0.0.1 is not by default given access unless specified More groups (like the privileged group W:) can be defined using the --api-groups command Valid groups are only the letters A-Z (except R & W are predefined) and are not case sensitive The R: group is the same as not privileged access The W: group is (as stated) privileged access (thus all API commands) To give an IP address/subnet access to a group you use the group letter in front of the IP address instead of W: e.g. P:192.168.0/32 An IP address/subnet can only be a member of one group A sample API group would be: --api-groups P:switchpool:enablepool:addpool:disablepool:removepool.poolpriority:* This would create a group 'P' that can do all current pool commands and all non-priviliged commands - the '*' means all non-priviledged commands Without the '*' the group would only have access to the pool commands Defining multiple groups example: --api-groups Q:quit:restart:*,S:save This would define 2 groups: Q: that can 'quit' and 'restart' as well as all non-priviledged commands S: that can only 'save' and no other commands The RPC API request can be either simple text or JSON. If the request is JSON (starts with '{'), it will reply with a JSON formatted response, otherwise it replies with text formatted as described further below. The JSON request format required is '{"command":"CMD","parameter":"PARAM"}' (though of course parameter is not required for all requests) where "CMD" is from the "Request" column below and "PARAM" would be e.g. the CPU/GPU number if required. An example request in both formats to set GPU 0 fan to 80%: gpufan|0,80 {"command":"gpufan","parameter":"0,80"} The format of each reply (unless stated otherwise) is a STATUS section followed by an optional detail section From API version 1.7 onwards, reply strings in JSON and Text have the necessary escaping as required to avoid ambiguity - they didn't before 1.7 For JSON the 2 characters '"' and '\' are escaped with a '\' before them For Text the 4 characters '|' ',' '=' and '\' are escaped the same way Only user entered information will contain characters that require being escaped, such as Pool URL, User and Password or the Config save filename, when they are returned in messages or as their values by the API For API version 1.4 and later: The STATUS section is: STATUS=X,When=NNN,Code=N,Msg=string,Description=string| STATUS=X Where X is one of: W - Warning I - Informational S - Success E - Error F - Fatal (code bug) When=NNN Standard long time of request in seconds Code=N Each unique reply has a unigue Code (See api.c - #define MSG_NNNNNN) Msg=string Message matching the Code value N Description=string This defaults to the cgminer version but is the value of --api-description if it was specified at runtime. For API version 1.10 and later: The list of requests - a (*) means it requires privileged access - and replies are: Request Reply Section Details ------- ------------- ------- version VERSION CGMiner=cgminer, version API=API| version config CONFIG Some miner configuration information: GPU Count=N, <- the number of GPUs PGA Count=N, <- the number of PGAs CPU Count=N, <- the number of CPUs Pool Count=N, <- the number of Pools ADL=X, <- Y or N if ADL is compiled in the code ADL in use=X, <- Y or N if any GPU has ADL Strategy=Name, <- the current pool strategy Log Interval=N, <- log interval (--log N) Device Code=GPU ICA | <- spaced list of compiled devices summary SUMMARY The status summary of the miner e.g. Elapsed=NNN,Found Blocks=N,Getworks=N,...| pools POOLS The status of each pool e.g. Pool=0,URL=http://pool.com:6311,Status=Alive,...| devs DEVS Each available GPU, PGA and CPU with their details e.g. GPU=0,Accepted=NN,MHS av=NNN,...,Intensity=D| Last Share Time=NNN, <- standand long time in seconds (or 0 if none) of last accepted share Last Share Pool=N, <- pool number (or -1 if none) Will not report PGAs if PGA mining is disabled Will not report CPUs if CPU mining is disabled gpu|N GPU The details of a single GPU number N in the same format and details as for DEVS pga|N PGA The details of a single PGA number N in the same format and details as for DEVS This is only available if PGA mining is enabled Use 'pgacount' or 'config' first to see if there are any cpu|N CPU The details of a single CPU number N in the same format and details as for DEVS This is only available if CPU mining is enabled Use 'cpucount' or 'config' first to see if there are any gpucount GPUS Count=N| <- the number of GPUs pgacount PGAS Count=N| <- the number of PGAs Always returns 0 if PGA mining is disabled cpucount CPUS Count=N| <- the number of CPUs Always returns 0 if CPU mining is disabled switchpool|N (*) none There is no reply section just the STATUS section stating the results of switching pool N to the highest priority (the pool is also enabled) The Msg includes the pool URL enablepool|N (*) none There is no reply section just the STATUS section stating the results of enabling pool N The Msg includes the pool URL addpool|URL,USR,PASS (*) none There is no reply section just the STATUS section stating the results of attempting to add pool N The Msg includes the pool URL Use '\\' to get a '\' and '\,' to include a comma inside URL, USR or PASS poolpriority|N,... (*) none There is no reply section just the STATUS section stating the results of changing pool priorities See usage below disablepool|N (*) none There is no reply section just the STATUS section stating the results of disabling pool N The Msg includes the pool URL removepool|N (*) none There is no reply section just the STATUS section stating the results of removing pool N The Msg includes the pool URL N.B. all details for the pool will be lost gpuenable|N (*) none There is no reply section just the STATUS section stating the results of the enable request gpudisable|N (*) none There is no reply section just the STATUS section stating the results of the disable request gpurestart|N (*) none There is no reply section just the STATUS section stating the results of the restart request gpuintensity|N,I (*) none There is no reply section just the STATUS section stating the results of setting GPU N intensity to I gpumem|N,V (*) none There is no reply section just the STATUS section stating the results of setting GPU N memoryclock to V MHz gpuengine|N,V (*) none There is no reply section just the STATUS section stating the results of setting GPU N clock to V MHz gpufan|N,V (*) none There is no reply section just the STATUS section stating the results of setting GPU N fan speed to V% gpuvddc|N,V (*) none There is no reply section just the STATUS section stating the results of setting GPU N vddc to V save|filename (*) none There is no reply section just the STATUS section stating success or failure saving the cgminer config to filename The filename is optional and will use the cgminer default if not specified quit (*) none There is no status section but just a single "BYE" reply before cgminer quits notify NOTIFY The last status and history count of each devices problem This lists all devices including those not supported by the 'devs' command e.g. NOTIFY=0,Name=GPU,ID=0,Last Well=1332432290,...| privileged (*) none There is no reply section just the STATUS section stating an error if you do not have privileged access to the API and success if you do have privilege The command doesn't change anything in cgminer pgaenable|N (*) none There is no reply section just the STATUS section stating the results of the enable request You cannot enable a PGA if it's status is not WELL This is only available if PGA mining is enabled pgadisable|N (*) none There is no reply section just the STATUS section stating the results of the disable request This is only available if PGA mining is enabled devdetails DEVDETAILS Each device with a list of their static details This lists all devices including those not supported by the 'devs' command e.g. DEVDETAILS=0,Name=GPU,ID=0,Driver=opencl,...| restart (*) none There is no status section but just a single "RESTART" reply before cgminer restarts stats STATS Each device or pool that has 1 or more getworks with a list of stats regarding getwork times The values returned by stats may change in future versions thus would not normally be displayed Device drivers are also able to add stats to the end of the details returned check|cmd COMMAND Exists=Y/N, <- 'cmd' exists in this version Access=Y/N| <- you have access to use 'cmd' When you enable, disable or restart a GPU or PGA, you will also get Thread messages in the cgminer status window The 'poolpriority' command can be used to reset the priority order of multiple pools with a single command - 'switchpool' only sets a single pool to first priority Each pool should be listed by id number in order of preference (first = most preferred) Any pools not listed will be prioritised after the ones that are listed, in the priority order they were originally If the priority change affects the miner's preference for mining, it may switch immediately When you switch to a different pool to the current one (including by priority change), you will get a 'Switching to URL' message in the cgminer status windows Obviously, the JSON format is simply just the names as given before the '=' with the values after the '=' If you enable cgminer debug (-D or --debug) you will also get messages showing details of the requests received and the replies There are included 4 program examples for accessing the API: api-example.php - a php script to access the API usAge: php api-example.php command by default it sends a 'summary' request to the miner at 127.0.0.1:4028 If you specify a command it will send that request instead You must modify the line "$socket = getsock('127.0.0.1', 4028);" at the beginning of "function request($cmd)" to change where it looks for cgminer API.java/API.class a java program to access the API (with source code) usAge is: java API command address port Any missing or blank parameters are replaced as if you entered: java API summary 127.0.0.1 4028 api-example.c - a 'C' program to access the API (with source code) usAge: api-example [command [ip/host [port]]] again, as above, missing or blank parameters are replaced as if you entered: api-example summary 127.0.0.1 4028 miner.php - an example web page to access the API This includes buttons and inputs to attempt access to the privileged commands Read the top of the file (miner.php) for details of how to tune the display and also to use the option to display a multi-rig summary See the end of this API-README for more details ---------- Feature Changelog for external applications using the API: API V1.15 (cgminer v2.6.1) Added API commands: 'poolpriority' ---------- API V1.14 (cgminer v2.5.0) Modified API commands: 'stats' - more icarus timing stats added 'notify' - include new device comms error counter The internal code for handling data was rewritten (~25% of the code) Completely backward compatible ---------- API V1.13 (cgminer v2.4.4) Added API commands: 'check' Support was added to cgminer for API access groups with the --api-groups option It's 100% backward compatible with previous --api-access commands ---------- API V1.12 (cgminer v2.4.3) Modified API commands: 'stats' - more pool stats added Support for the ModMinerQuad FPGA was added ---------- API V1.11 (cgminer v2.4.2) Modified API commands: 'save' no longer requires a filename (use default if not specified) 'save' incorrectly returned status E (error) on success before. It now correctly returns S (success) ---------- API V1.10 (cgminer v2.4.1) Added API commands: 'stats' N.B. the 'stats' command can change at any time so any specific content present should not be relied upon. The data content is mainly used for debugging purposes or hidden options in cgminer and can change as development work requires Modified API commands: 'pools' added "Last Share Time" ---------- API V1.9 (cgminer v2.4.0) Added API commands: 'restart' Modified API commands: 'notify' corrected invalid JSON ---------- API V1.8 (cgminer v2.3.5) Added API commands: 'devdetails' Support for the ZTex FPGA was added ---------- API V1.7 (cgminer v2.3.4) Added API commands: 'removepool' Modified API commands: 'pools' added "User" From API version 1.7 onwards, reply strings in JSON and Text have the necessary escaping as required to avoid ambiguity For JSON the 2 characters '"' and '\' are escaped with a '\' before them For Text the 4 characters '|' ',' '=' and '\' are escaped the same way ---------- API V1.6 (cgminer v2.3.2) Added API commands: 'pga' 'pgaenable' 'pgadisable' 'pgacount' Modified API commands: 'devs' now includes Icarus and Bitforce FPGA devices 'notify' added "*" to the front of the name of all numeric error fields 'config' correct "Log Interval" to use numeric (not text) type for JSON Support for Icarus and Bitforce FPGAs was added ---------- API V1.5 was not released ---------- API V1.4 (Kano's interim release of cgminer v2.3.1) Added API commands: 'notify' Modified API commands: 'config' added "Device Code" and "OS" Added "When" to the STATUS reply section of all commands ---------- API V1.3 (cgminer v2.3.1-2) Added API commands: 'addpool' Modified API commands: 'devs'/'gpu' added "Total MH" for each device 'summary' added "Total MH" ---------- API V1.2 (cgminer v2.3.0) Added API commands: 'enablepool' 'disablepool' 'privileged' Modified API commands: 'config' added "Log Interval" Starting with API V1.2, any attempt to access a command that requires privileged security, from an IP address that does not have privileged security, will return an "Access denied" Error Status ---------- API V1.1 (cgminer v2.2.4) There were no changes to the API commands in cgminer v2.2.4, however support was added to cgminer for IP address restrictions with the --api-allow option ---------- API V1.1 (cgminer v2.2.2) Prior to V1.1, devs/gpu incorrectly reported GPU0 Intensity for all GPUs Modified API commands: 'devs'/'gpu' added "Last Share Pool" and "Last Share Time" for each device ---------- API V1.0 (cgminer v2.2.0) Remove default CPU support Added API commands: 'config' 'gpucount' 'cpucount' 'switchpool' 'gpuintensity' 'gpumem' 'gpuengine' 'gpufan' 'gpuvddc' 'save' ---------- API V0.7 (cgminer v2.1.0) Initial release of the API in the main cgminer git Commands: 'version' 'devs' 'pools' 'summary' 'gpuenable' 'gpudisable' 'gpurestart' 'gpu' 'cpu' 'gpucount' 'cpucount' 'quit' ---------------------------------------- miner.php ========= miner.php is a PHP based interface to the cgminer RPC API (referred to simply as the API below) It can show rig details, summaries and input fields to allow you change cgminer You can also create custom summary pages with it It has two levels to the security: 1) cgminer can be configured to allow or disallow API access and access level security for miner.php 2) miner.php can be configured to allow or disallow privileged cgminer access, if cgminer is configured to allow privileged access for miner.php --------- To use miner.php requires a web server with PHP Basics: On xubuntu 11.04, to install apache2 and php, the commands are: sudo apt-get install apache2 sudo apt-get install php5 sudo /etc/init.d/apache2 reload On Fedora 17: yum install httpd php systemctl restart httpd.service systemctl enable httpd.service --system On windows there are a few options. Try one of these (I've never used either one) http://www.apachefriends.org/en/xampp.html http://www.wampserver.com/en/ --------- The basic cgminer option to enable the API is: --api-listen or in your cgminer.conf "api-listen" : true, (without the ',' on the end if it is the last item) If the web server is running on the cgminer computer, the above is the only change required to give miner.php basic access to the cgminer API - If the web server runs on a different computer to cgminer, you will also need to tell cgminer to allow the web server to access cgminer's API and tell miner.php where cgminer is Assuming a.b.c.d is the IP address of the web server, you would add the following to cgminer: --api-listen --api-allow a.b.c.d or in your cgminer.conf "api-listen" : true, "api-allow" : "a.b.c.d", to tell cgminer to give the web server read access to the API You also need to tell miner.php where cgminer is. Assuming cgminer is at IP address e.f.g.h, then you would edit miner.php and change the line $rigs = array('127.0.0.1:4028'); to $rigs = array('e.f.g.h:4028'); See --api-network or --api-allow for more access details and how to give write access --------- Once you have a web server with PHP running copy your miner.php to the main web folder On Xubuntu 11.04 /var/www/ On Fedora 17 /var/www/html/ On Windows see your windows Web/PHP documentation Assuming the IP address of the web server is a.b.c.d Then in your web browser go to: http://a.b.c.d/miner.php Done :) --------- The rest of this documentation deals with the more complex functions of miner.php, using myminer.php, creaing custom summaries and displaying multiple cgminer rigs --------- If you create a file called myminer.php in the same web folder where you put miner.php, miner.php will load it when it runs This is useful, to put any changes you need to make to miner.php instead of changing miner.php Thus if you update/get a new miner.php, you won't lose the changes you have made if you put all your changes in myminer.php (and don't change miner.php at all) A simple example myminer.php that defines 2 rigs (that I will keep referring to further below) is: Changes in myminer.php superscede what is in miner.php However, this is only valid for variables in miner.php before the 2 lines where myminer.php is included by miner.php: if (file_exists('myminer.php')) include_once('myminer.php'); Every variable in miner.php above those 2 lines, can be changed by simply defining them in your myminer.php So although miner.php originally contains the line $rigs = array('127.0.0.1:4028'); if you created the example myminer.php given above, it would actually change the value of $rigs that is used when miner.php is running i.e. you don't have to remove or comment out the $rigs line in miner.php It will be superceded by myminer.php --------- The example.php above also shows how to define more that one rig to be shown my miner.php Each rig string is 2 or 3 values seperated by colons ':' They are simply an IP address or host name, followed by the port number (usually 4028) and an optional Name string miner.php displays rig buttons that will show the defails of a single rig when you click on it - the button shows either the rig number, or the 'Name' string if you provide it PHP arrays contain each string seperated by a comma, but no comma after the last one So an example for 3 rigs would be: $rigs = array('192.168.0.100:4028:A', '192.168.0.102:4028:B', '192.168.0.110:C'); Of course each of the rigs listed would also have to have the API running and be set to allow the web server to access the API - as explained before --------- So basically, any variable explained below can be put in myminer.php if you wanted to set it to something different to it's default value and did not want to change miner.php itself every time you updated it Below is each variable that can be changed and an explanation of each --------- Default: $readonly = false; Set $readonly to true to force miner.php to be readonly This means it won't allow you to change cgminer even if the cgminer API options allow it to If you set $readonly to false then it will check cgminer 'privileged' and will show input fields and buttons on the single rig page allowing you to change devices, pools and even quit or restart cgminer However, if the 'privileged' test fails, the code will set $readonly to true --------- Default: $notify = true; Set $notify to false to NOT attempt to display the notify command table of data Set $notify to true to attempt to display the notify command on the single rig page If your older version of cgminer returns an 'Invalid command' coz it doesn't have notify - it just shows the error status table --------- Default: $checklastshare = true; Set $checklastshare to true to do the following checks: If a device's last share is 12x expected ago then display as an error If a device's last share is 8x expected ago then display as a warning If either of the above is true, also display the whole line highlighted This assumes shares are 1 difficulty shares Set $checklastshare to false to not do the above checks 'expected' is calculated from the device MH/s value So for example, a device that hashes at 380MH/s should (on average) find a share every 11.3s If the last share was found more than 11.3 x 12 seconds (135.6s) ago, it is considered an error and highlighted If the last share was found more than 11.3 x 8 seconds (90.4s) ago, it is considered a warning and highlighted The default highlighting is very subtle --------- Default: $poolinputs = false; Set $poolinputs to true to show the input fields for adding a pool and changing the pool priorities on a single rig page However, if $readonly is true, it will not display them --------- Default: $rigs = array('127.0.0.1:4028'); Set $rigs to an array of your cgminer rigs that are running format: 'IP:Port' or 'Host:Port' or 'Host:Port:Name' If you only have one rig, it will just show the detail of that rig If you have more than one rig it will show a summary of all the rigs with buttons to show the details of each rig - the button contents will be 'Name' rather than rig number, if you specify 'Name' e.g. $rigs = array('127.0.0.1:4028','myrig.com:4028:Sugoi'); --------- Default: $rigtotals = true; $forcerigtotals = false; Set $rigtotals to true to display totals on the single rig page 'false' means no totals (and ignores $forcerigtotals) If $rigtotals is true, all data is also right aligned With false, it's as before, left aligned This option is just here to allow people to set it to false if they prefer the old non-total display when viewing a single rig Also, if there is only one line shown in any section, then no total will be shown (to save screen space) You can force it to always show rig totals on the single rig page, even if there is only one line, by setting $forcerigtotals = true; --------- Default: $socksndtimeoutsec = 10; $sockrcvtimeoutsec = 40; The numbers are integer seconds The defaults should be OK for most cases However, the longer SND is, the longer you have to wait while php hangs if the target cgminer isn't runnning or listening RCV should only ever be relevant if cgminer has hung but the API thread is still running, RCV would normally be >= SND Feel free to increase SND if your network is very slow or decrease RCV if that happens often to you Also, on some windows PHP, apparently the $usec is ignored (so usec can't be specified) --------- Default: $hidefields = array(); List of fields NOT to be displayed You can use this to hide data you don't want to see or don't want shown on a public web page The list of sections are: SUMMARY, POOL, PGA, GPU, NOTIFY, CONFIG, NOTIFY, DEVDETAILS, DEVS See the web page for the list of field names (the table headers) It is an array of 'SECTION.Field Name' => 1 This example would hide the slightly more sensitive pool information: Pool URL and pool username: $hidefields = array('POOL.URL' => 1, 'POOL.User' => 1); If you just want to hide the pool username: $hidefields = array('POOL.User' => 1); --------- Default: $ignorerefresh = false; $changerefresh = true; $autorefresh = 0; Auto-refresh of the page (in seconds) - integers only $ignorerefresh = true/false always ignore refresh parameters $changerefresh = true/false show buttons to change the value $autorefresh = default value, 0 means dont auto-refresh --------- Default: $placebuttons = 'top'; Where to place the Refresh, Summary, Custom Pages, Quit, etc. buttons Valid values are: 'top' 'bot' 'both' anything else means don't show them - case sensitive --------- Default: $miner_font_family = 'verdana,arial,sans'; $miner_font_size = '13pt'; Change these to set the font and font size used on the web page --------- Default: $colouroverride = array(); Use this to change the web page colour scheme See $colourtable in miner.php for the list of possible names to change Simply put in $colouroverride, just the colours you wish to change e.g. to change the colour of the header font and background you could do the following: $colouroverride = array( 'td.h color' => 'green', 'td.h background' => 'blue' ); --------- Default: $allowcustompages = true; Should we allow custom pages? (or just completely ignore them and don't display the buttons) --------- OK this part is more complex: Custom Summary Pages A custom summary page in an array of 'section' => array('FieldA','FieldB'...) The section defines what data you want in the summary table and the Fields define what data you want shown from that section Standard sections are: SUMMARY, POOL, PGA, GPU, NOTIFY, CONFIG, NOTIFY, DEVDETAILS, DEVS, STATS Fields are the names as shown on the headers on the normal pages Fields can be 'name=new name' to display 'name' with a different heading 'new name' There are also now joined sections: SUMMARY+POOL, SUMMARY+DEVS, SUMMARY+CONFIG, DEVS+NOTIFY, DEVS+DEVDETAILS These sections are an SQL join of the two sections and the fields in them are named section.field where section. is the section the field comes from See the example further down Also note: - empty tables are not shown - empty columns (e.g. an unknown field) are not shown - missing field data shows as blank - the field name '*' matches all fields except in joined sections (useful for STATS) There are 2 hard coded sections: DATE - displays a date table like 'Summary' RIGS - displays a rig table like 'Summary' Each custom summary requires a second array, that can be empty, listing fields to be totaled for each section If there is no matching total data, no total will show --------- Looking at the Mobile example: $mobilepage = array( 'DATE' => null, 'RIGS' => null, 'SUMMARY' => array('Elapsed', 'MHS av', 'Found Blocks=Blks', Accepted', 'Rejected=Rej', 'Utility'), 'DEVS+NOTIFY' => array('DEVS.Name=Name', 'DEVS.ID=ID', 'DEVS.Status=Status', 'DEVS.Temperature=Temp', 'DEVS.MHS av=MHS av', 'DEVS.Accepted=Accept', 'DEVS.Rejected=Rej', 'DEVS.Utility=Utility', 'NOTIFY.Last Not Well=Not Well'), 'POOL' => array('POOL', 'Status', 'Accepted', 'Rejected=Rej', 'Last Share Time')); $mobilesum = array( 'SUMMARY' => array('MHS av', 'Found Blocks', 'Accepted', 'Rejected', 'Utility'), 'DEVS+NOTIFY' => array('DEVS.MHS av', 'DEVS.Accepted', 'DEVS.Rejected', 'DEVS.Utility'), 'POOL' => array('Accepted', 'Rejected')); $customsummarypages = array('Mobile' => array($mobilepage, $mobilesum)); This will show 5 tables (according to $mobilepage) Each table will have the chosen details for all the rigs specified in $rigs DATE A single box with the web server's current date and time RIGS A table of the rigs: description, time, versions etc SUMMARY This will use the API 'summary' command and show the selected fields: Elapsed, MHS av, Found Blocks, Accepted, Rejected and Utility However, 'Rejected=Rej' means that the header displayed for the 'Rejected' field will be 'Rej', instead of 'Rejected' (to save space) Same for 'Found Blocks=Blks' - to save space DEVS+NOTIFY This will list each of the devices on each rig and display the list of fields as shown If will also include the 'Last Not Well' field from the 'notify' command so you know when the device was last not well You will notice that you need to rename each field e.g. 'DEVS.Name=Name' since each field name in the join between DEVS and NOTIFY is actually section.fieldname, not just fieldname The join code automatically adds 2 fields to each CPU device: 'Name' and 'ID' They don't exist in the API 'devs' output but you can correctly calculate them from the CPU device data These two fields are used to join DEVS to NOTIFY i.e. find the NOTIFY record that has the same Name and ID as the DEVS record and join them POOL This will use the API 'pools' command and show the selected fields: POOL, Status, Accepted, Rejected, Last Share Time Again, I renamed the 'Rejected' field using 'Rejected=Rej', to save space $mobilesum lists the sections and fields that should have a total You can't define them for 'DATE' or 'RIGS' since they are hard coded tables The example given: SUMMARY Show a total at the bottom of the columns for: MHS av, Found Blocks, Accepted, Rejected, Utility Firstly note that you use the original name i.e. for 'Rejected=Rej' you use 'Rejected', not 'Rej' and not 'Rejected=Rej' Secondly note that it simply adds up the fields If you ask for a total of a string field you will get the numerical sum of the string data DEVS+NOTIFY Simply note in this join example that you must use the original field names which are section.fieldname, not just fieldname POOL Show a total at the bottom of the columns for: Accepted and Rejected Again remember to use the original field name 'Rejected'