Check These Out
A quick and simple way of outputting the start and end date of a certificate, you can simply use 'openssl x509 -in xxxxxx.crt -noout -enddate' to output the end date (ex. notAfter=Feb 01 11:30:32 2009 GMT) and with the date command you format the output to an ISO format.
For the start date use the switch -startdate and for end date use -enddate.
Shows all block devices in a tree with descruptions of what they are.
This command will replace all the spaces in all the filenames of the current directory with underscores. There are other commands that do this here, but this one is the easiest and shortest.
This command takes an application name as an argument and then it will listen to the tcp traffic and capture packets matching the process Id of the application.
The output shows:
local address / local port / Remote Address / Remote port / State / Owning Process ID
'jot' does not come with most *nix distros, so we need to use seq to make it work. This version tested good on Fedora 11.
Should work on all systems that use dpkg and APT package management.
mogrify can be used like convert. The difference is that mogrify overwrites files:
http://www.imagemagick.org/www/mogrify.html
Of course, other source colors can be used as well.
A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.
Decrypt MD5 , replace 1cb251ec0d568de6a929b520c4aed8d1 with the MD5 string you want to decrypt
This is what I came up to generate XKCD #936 style four-word password.
Since first letter of every word is capitalized it looks a bit more readable to my eyes.
Also strips single quotes.
And yes - regex is a bit of a kludge, but that's the bes i could think of.