Commands using cd (215)

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Random numbers with Ruby
There's been a few times I've needed to create random numbers. Although I've done so in PERL, I've found Ruby is actually faster. This script generates 20 random "10" digit number NOT A RANDOM NUMBER. Replace 20 (1..20) with the amount of random numbers you need generated

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"

Put a console clock in top right corner
Gives not only date but also some interesting status about the System

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

Poor man's ntpdate
If you don't have netcat, you can use curl.

Print trending topics on Twitter

Kill all processes that don't belong to root/force logoff
explanation: grep -- displays process ids -v -- negates the matching, displays all but what is specified in the other options -u -- specifies the user to display, or in this case negate The process loops through all PIDs that are found by pgrep, then orders a forced kill to the processes in numerical order, effectively killing the parent processes first including the shells in use which will force the users to logout. Tested on Slackware Linux 12.2 and Slackware-current

Kill multiple instances of a running process

Find the package that installed a command

check open ports without netstat or lsof


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