Commands using cp (115)

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List all available commands (bash, ksh93)

save date and time for each command in history
Date-time format: YYYY-MM-DD HH:MM:SS

Multiple variable assignments from command output in BASH
It's quite easy to capture the output of a command and assign it in a shell's variable: $ day=$(date +%d) $ month=$(date +%m) But, what if we want to perform the same task with just one program invocation? Here comes the power of eval! date(1) outputs a string like "day=29; month=07; year=11" (notice the semicolons I added on purpose at date's custom output) which is a legal shell line. This like is then parsed and executed by the shell once again with the help of eval. Just setting 3 variables! Inspired by LinuxJournal's column "Dave Taylor's Work the Shell".

Get all IPs via ifconfig
works on Linux and Solaris. I think it will work on nearly all *nix-es

Show in a web server, running in the port 80, how many ESTABLISHED connections by ip it has.
The command could show you all conecctions if you skip "grep ESTABLISHED"

Force hard reset on server
Useful when you have some wrong on a server (nfs freeze/ immortal process)

list files recursively by size

find distro name / release version

Delete All Objects From An S3 Bucket Using S3cmd

Find usb device
I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him


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