Difference between revisions of "Linux commands"
From Organic Design wiki
(DHCP leases) |
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{{code|<bash> | {{code|<bash> | ||
perl -e 'qx "convert $_ -background #ff00ff -flatten foo/$_" for glob "*.png"' | perl -e 'qx "convert $_ -background #ff00ff -flatten foo/$_" for glob "*.png"' | ||
| + | </bash>}} | ||
| + | |||
| + | == Network commands == | ||
| + | |||
| + | === Release DHCP lease === | ||
| + | {{code|<bash> | ||
| + | sudo dhclient -r | ||
| + | </bash>}} | ||
| + | |||
| + | === Obtain a new DHCP lease === | ||
| + | {{code|<bash> | ||
| + | sudo dhclient | ||
</bash>}} | </bash>}} | ||
Revision as of 10:39, 8 May 2008
I'm starting a list of useful linux shell commands (generally "one liners") we use a lot
Contents
Image Manipulation
Resizing JPG's and changing quality setting
The first line shows how to reduce and image to 25% and quality to 50% adding "_resized" to the results filename. The second command uses Perl to apply this same command to all JPG's in the current directory.
Apply an opaque background of a specified colour to a directory of transparent PNG's
- This command requires ImageMagick to be installed
- It loops through all PNG's in the CWD and puts them in a directory called processed which must exist
