works in fedora, centos and presumably other distros that use chkconfig

Locally watch MySQL process list update every 5s on a remote host. While you watch pipe to a file. The file out put is messy though but hey at least you have a history of what you see.

make password randomly, default 8 char

Output the html from xkcd's index.html, filter out the html tags, and then view it in gwenview.

If you don't save the rule set it won't be applied during a reboot

Uses curl to download page of membership of US Congress. Use sed to strip HTML then perl to print a line starting with two tabs (a line with a representative)

add-apt-repository "deb http://archive.canonical.com/ lucid partner"

The exported TSV file of Google Adwords' first five columns are text, they usually should collapse into one cell, a multi-line text cell, but there is no guaranteed way to represent line-break within cells for .tsv file format, thus Google split it to 5 columns.

The problem is, with 5 columns of text, there are hardly space to put additional fields while maintain printable output.

This script collapses the first five columns of each row into one single multi-line text cell, for console output or direct send to printer.

unzip /surce/file.zip -d /dest/

From Hong Kong Observatory wap site ;)

I _think_ you were trying to delete files whether or not they had spaces. This would do that. You should probably be more specific though.

"get Hong Kong weather infomation from HK Observatory

From Hong Kong Observatory wap site ;)"

other one showed alot of blank lines for me

Use find's built-in ability to call programs.

Alternatively,

find -maxdepth 1 -type f -name "*.7z" -print0 | xargx -0 -n 1 7zr e

would work, too.

Can be used to test error handling

There is no longer a need to add PGP keys for Ubuntu Launchpad PPA's.

The add-apt-repository command creates a new file for the PPA in /etc/sources.list.d/ then adds the PPA's keys to the apt keyring automatically. No muss, no fuss.

View files in ZIP archive

unzip -l files.zip

Replace DOS character ^M with newline using perl inline replace.

Shorter version with curl and awk

There's nothing particularly novel about this combination of find, grep, and wc, I'm just putting it here in case I want it again.