Commands using cut (586)

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Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Find all the files more than 10MB, sort in descending order of size and record the output of filenames and size in a text file.
This command specifies the size in Kilobytes using 'k' in the -size +(N)k option. The plus sign says greater than. -exec [cmd] {} \; invokes ls -l command on each file and awk strips off the values of the 5th (size) and the 9th (filename) column from the ls -l output to display. Sort is done in reversed order (descending) numerically using sort -rn options. A cron job could be run to execute a script like this and alert the users if a dir has files exceeding certain size, and provide file details as well.

Install pip with Proxy
Installs pip packages defining a proxy

processes per user counter
enumerates the number of processes for each user. ps BSD format is used here , for standard Unix format use : ps -eLf |awk '{$1} {++P[$1]} END {for(a in P) if (a !="UID") print a,P[a]}'

Create a new file

Color STDERR in output
This command will take the output of a command and color any STDERR output as a different color (red outline in this case)

Download entire commandlinefu archive to single file
'jot' does not come with most *nix distros, so we need to use seq to make it work. This version tested good on Fedora 11.

Find the package that installed a command

Find last reboot time
Specific to OSX.

In-Place search/replace with datestamped backup
Does an in situ search-replace but leaves a datestamped backup. A variation with more precision: sed -i.`date +%Y%m%d%H%M%S 's/pattern/replace' [filename]


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