Commands using ping (69)

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Adding specific CustomLog for each Virtual Domain of Apache

Execute a command with a timeout

What is my ip?

extract email addresses from some file (or any other pattern)

Find the package that installed a command

Extract your list of blocked images hosts from Firefox database
I use this to replicate my blocked images hosts list between work and home to keep my browsing ad-free.

Make .bashrc function to backup the data you changed last houres
The original overwrites any previous backups, and only saves exactly the last hours worth, but not 1 hour + 1 minute. This version creates or appends files, and backs up everything since the last backup (using the backups timestamp as the reference), plus it uses TMPDIR if set.

grab all of google IPv4 network blocks

Test sendmail
test if sendmail is installed and working.

Check SSL expiry from commandline


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