Commands using sort (800)

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Print just line 4 from a textfile
this method should be the fastest

Find the package that installed a command

list all file extensions in a directory
... plus do a sort according frequency

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Get length of current playlist in xmms2

list block devices
Shows all block devices in a tree with descruptions of what they are.

Limit the cpu usage of a process
Similar to `cpulimit`, although `prlimit` can be found shipped with recent util-linux. Example: limit CPU consumption to 10% for a math problem which ordinarily takes up 100% CPU: Before: $ bc -l

Install pip with Proxy
Installs pip packages defining a proxy

Watch how many tcp connections there are per state every two seconds.
slighty shorter

Exclude multiple columns using AWK
Print all columns except the 1st and 3rd.


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