Commands tagged asterisk (9)

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Slightly better compressed archives
Avoids creating useless directory entries in archive, and sorts files by (roughly) extension, which is likely to group similar files together for better compression. 1%-5% improvement.

Grep only files matching certain pattern (Advanced)

while using lxde and being blinded by your laptop screen, you can type:
I'm not sure what apt this is, but it seems to work on most X screens, an is useful for saving power, and not straining your eyes

Check wireless link quality with dialog box
The variable WIRELESSINTERFACE indicates your wireless interface

Create a mirror of a local folder, on a remote server
Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Get all upgradable deb packages in a single line
Works for debian and ubuntu based distros.

Compare a remote dir with a local dir
You can compare directories on two different remote hosts as well: $ diff -y

rgrep: recursive grep without .svn
Only excludes .svn from filenames.

Emergency Alien Invasion Warning
When aliens invade Earth, be first to warn your neighbours by placing your computer screen at a window and executing this potentially Earth-saving command. Ctrl C when aliens are defeated.

Extract busiest times from apache access log
Analyze an Apache access log for the time period with most activity and display the hit count, requesting IP and the timestamp. May help detect a brute force dos attack.


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