Commands by Hype (2)

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Extract a remote tarball in the current directory without having to save it locally

Print info about your real user.
To get your effective user: whoami

print a file on a single line
Example: you have a package.txt you want to install on a system. Instead of this: cat package.txt package1 package2 package3 You want it to cat out on one line so you can print "yum install package1 package2 package3"

Releases Firefox of a still running message
Sometimes Firefox crashes or is bad finished and the message the process is still running appear while it's not. This also works when you sharing account from a NIS server and try to open the browser on multiple computers.

get all Google ipv4/6 subnets for a iptables firewall for example (updated version)
google has added 2 more netblocks...

Adding a startup script to be run at bootup Ubuntu
This script will run each time you boot up.The script must be in /etc/init.d directory.

List only directories, one per line
omit the 1 (one) if you don't need one-per-line

list block devices
Shows all block devices in a tree with descruptions of what they are.

list block devices
Shows all block devices in a tree with descruptions of what they are.

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"


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