Commands using diff (119)

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find an unused unprivileged TCP port
Not really better - just different ;) There's probably a really simple solution out there somewhere...

Edit your command in vim ex mode by <ctrl-f>
If you are in ex mode in vim i.e. you've pressed ':'. You can edit the current command by pressing <ctrl-f>

Rename files in batch

Annotate tail -f with timestamps

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"

Revert back all files currently checked out by Perforce SCM for edit

Search for a process by name
ps and grep is a dangerous combination -- grep tries to match everything on each line (thus the all too common: grep -v grep hack). ps -C doesn't use grep, it uses the process table for an exact match. Thus, you'll get an accurate list with: ps -fC sh rather finding every process with sh somewhere on the line.

Limit the transfer rate and size of data over a pipe
This example will close the pipe after transferring 100MB at a speed of 3MB per second.

resolve short urls
since the most url shorteners respond with a header containing the Location: ... this works with most common shorteners

continuously check size of files or directories


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