Commands by AJxn (0)

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Find out which debian package a command (executable) belongs to on debian-based distros
This revision to my command (command #8851) was called for when it failed to find the parent package of 'rlogin', which is really a deep symbolic link to /usr/bin/ssh. This revision fixes this newfound issue, while ensuring fixes of other older issues work too.

Extract public key from private
This will extract the public key that is stored in the private key using openssl.

How many files in the current directory ?
A simple "ls" lists files *and* directories. So we need to "find" the files (type 'f') only. As "find" is recursive by default we must restrict it to the current directory by adding a maximum depth of "1". If you should be using the "zsh" then you can use the dot (.) as a globbing qualifier to denote plain files: zsh> ls *(.) | wc -l for more info see the zsh's manual on expansion and substitution - "man zshexpn".

Aptitude pattern match
Could be dangerous, if you have many packages all beginning with 'foo' or 'bar'. This will easily remove them all from your system.

Null a file with sudo

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

Find the package that installed a command

Upgrade all expired homebrew packages
You probably want to run `brew update` before you run this command

Backup files incremental with rsync to a NTFS-Partition
This will backup the _contents_ of /media/SOURCE to /media/TARGET where TARGET is formatted with ntfs. The --modify-window lets rsync ignore the less accurate timestamps of NTFS.

find text in a file
this will find text in the directory you specify and give you line where it appears.


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