Commands by jdunn (5)

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Convert multiple flac files to mp3
make sure that flac and lame are installed sudo apt-get install lame flac

Execute multiple commands from history
Assuming that 219,229 and 221 are entries in history, I recall them in a single line for execute multiple commands 219 ifdown wlan0 ... 221 ifup wlan0 ... 229 iwconfig wlan0 mode Managed so the result is execution of # ifdown wlan0 ; iwconfig wlan0 mode Managed ; ifup wlan0

Find out what package some command belongs to (on RPM systems)
Replace 'more' command with any command which is in your PATH.

Prepend a text to a file.
Using the sed -i (inline), you can replace the beginning of the first line of a file without redirecting the output to a temporary location.

Sort files in folders alphabetically
Creates one letter folders in the current directory and moves files with corresponding initial in the folder.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Remove all zero size files from current directory (not recursive)

List empty any directories

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

Ultimate current directory usage command
A little bit smaller, faster and should handle files with special characters in the name.


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