• apropos whatis Show commands pertinent to string. See also threadsafe
• man -t man | ps2pdf - > man.pdf make a pdf of a manual page
which command Show full path name of command
time command See how long a command takes
• time cat Start stopwatch. Ctrl-d to stop. See also sw
• nice info Run a low priority command (The "info" reader in this case)
• renice 19 -p $$ Make shell (script) low priority. Use for non interactive tasks
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