Commands by Shadow (1)

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Remove all backup files in my home directory
I use this simple command for remove all backup files generated usually by editors like Vim and Emacs.

Write comments to your history.
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.

Turn white color to transparent for a series of png images
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.

Batch rename extension of all files in a folder, in the example from .txt to .md
Same thing using bash built-in features instead of a sub-shell.

Check apache config syntax and restart or edit the file
Checks the apache configuration syntax, if is OK then restart the service otherwise opens the configuration file with VIM on the line where the configuration fails.

Get size of terminal
See the cols and lines and make sure the console it correctly configured for the screen size.

Find the package that installed a command

phpinfo from the command line
show phpinfo(); from the command line

Show all configured ipv4
Short list of all ip. Shows even the newly supported multiple ip address on the same interface (see eth1). For ipv6 use -6

most used unix commands


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