Commands tagged random (98)

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Print text string vertically, one character per line.
Define a function $ vert () { echo $1 | grep -o '.'; } Use it to print some column headers $ paste

Remove leading zeros in multiple columns with sed
Leading zeros might help correct sorting and they can be removed by sed after sorting

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"

Test http request every second, fancy display.
Use the command watch, which is really hard to pass nested quotes to, and insert newlines where they are supposed to go in the HTTP request. that is after 1.1 after the host and two newlines at the end before the EOF. i use this all day what? no support for HEREDOCs on commandlinefu's interface? need more fu.

useless load
check your load with top... Start more of these jobs to get an multi-core cpu busy...

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

Compare two files side-by-side
I found out about this from Unix Power Tools, and thought it was pretty useful. Use the -w option to change the width of the output, and the -s option to suppress lines that are the same in both files.

list files recursively by size

Find file containing namespace in a directory of jar files.
You could subsitute javax.servlet for any namespace you need.

Use color grep by default
Alias the grep command to show colored results by default.


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