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You must have smartmontools installed for this to work. This also assumes you 512 byte sector sizes, this is pretty standard.
The command will read the apache log file and fetch the virtual host requested and the number of requests.
Sure, it's dirty, but it's quick, it only displays the excuse, and it works.
polls the pirate bay mirrors list and chooses a random site and opens it for you in firefox
Given a hosts list, ssh one by one and echo its name only if 'processname' is not running.
Monitoring system in one line :
DISK : disk space
MEM: memory ( mem , swap, Total)
CPU : all information about cpu activity
LOAD : load average
Top 30 History Command line with histogram display
capture 2000 packets and print the top 10 talkers
Caution: distructive overwrite of filenames
Useful for concatenating pdfs in date order using pdftk
Reduced to only one command. :)
Thx Mass1 for the sharing
This command makes a small graph with the histogram of size blocks (5MB in this example), not individual files. Fine tune the 4+5*int($1/5) block for your own size jumps : jump-1+jump*($1/jump)
Also in the hist=hist-5 part, tune for bigger or smaller graphs
Calculate the date of Sysadmin day (last Friday of July) of any given year
Downloads a CRL file, determines the expiration time, and checks when it will expire
Great for moves, re-installs etc since it is not version specific yet is architecture specific.
Centos yum list is well know for wrapping lines .
Recently in Debian Wheezy the dpkg command refuses to work with wildcards, so this is the one-liner alternative. (alternative to #13614)