Commands by chrisdrew (8)

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Oneliner to run commands on multiple servers
Oneliner to run commands on multiple servers over ssh. - First parameter "$1" is the command you want to execute remotely. ( It can be multiple commands e.g. "hostname;uptime") - Second parameter "${@:2}" represents the remote host/s you want to run the command/s on.

Removing images by size
Removes all png files whose geometry is not 280x190 pixels

What is my ip?

Find files and list them sorted by modification time
Works with files containing spaces and for very large directories.

Generate random IP addresses
It never ends

Adding specific CustomLog for each Virtual Domain of Apache

Short one line while loop that outputs parameterized content from one file to another
The above is an example of grabbing only the first column. You can define the start and end points specifically by chacater position using the following command: $ while read l; do echo ${l:10:40}; done < three-column-list.txt > column-c10-c40.txt Of course, it doesn't have to be a column, or extraction, it can be replacement $ while read l; do echo ${l/foo/bar}; done < list-with-foo.txt > list-with-bar.txt Read more about parameter expansion here: http://wiki.bash-hackers.org/syntax/pe Think of this as an alternative to awk or sed for file operations

Unrar all multipart rar archives in directory

Concatenate (join) video files
Use mencoder to concatenate (join) multiple video files together.

Sort a character string
Sorts a character string, using common shell commands.


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