Added boinccmd notes to the knowledge base

knowledge base/boinccmd.md

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+# Boinccmd
+
+## TL;DR
+
+```shell
+# use a project manager
+boinccmd --acct_mgr attach http://bam.boincstats.com myAwesomeUsername myAwesomePassword
+boinccmd --acct_mgr info
+boinccmd --acct_mgr sync
+boinccmd --acct_mgr detach
+
+# get the host status
+boinccmd --get_simple_gui_info
+boinccmd --get_state
+
+# list the current tasks
+boinccmd --get_tasks
+boinccmd --get_tasks | grep -i -C 8 executing
+
+# toggle getting work units from a project
+boinccmd --project http://www.worldcommunitygrid.org/ allowmorework
+boinccmd --get_project_status | grep "master URL" | awk -F ": " '{print $2}' | xargs -n 1 -t -I {} boinccmd --project {} nomorework
+```
+
+## Gotchas
+
+`boinccmd` looks for the `gui_rpc_auth.cfg` file in the same directory it is launched from.