Commands using dd (160)

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Given process ID print its environment variables
Same as previous but without fugly sed =x

Do command when logged in from certain ips using ssh
Place in ~/.bashrc If you login to a ssh server from different ips, sometimes you want to do something specific for each. e.g., quickly go into screen -x session from a phone, but not your desktop.

Get File Names from touch commands
retrieve file names back from touch commands for them

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"

vim as a pager - similar to less command but with color
use vim like less command pager but with color highlighting = pretty :p also u can use /usr/share/vim/vim73/macros/less.sh

list all opened ports on host

Email a file to yourself
This uses mutt to send the file, and doesn't require uuencode etc

Count number of files in a directory

Force machine to reboot no matter what (even if /sbin/shutdown is hanging)
This will cause your machine to INSTANTLY reboot. No un-mounting of drives or anything. Very handy when something has gone horribly wrong with your server in that co-location facility miles away with no remote hands! Suspect this works with all 2.2, 2.4 and 2.6 Linux kernels compiled with magic-syskey-request support.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.


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