Commands by YouM (2)

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Convert PDF to JPEG using Ghostscript
Converting your PDF file to JPEG images. You can set resolution by -r option (default: 72dpi).

Colorize grep output

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Show DeviceMapper names for LVM Volumes (to disambiguate iostat logs, etc)
Emits the device names which will be printed by iostat for an LVM volume; doesn't show the names for the underlying devices when snapshots are being used (the -cow and -real devices in /dev/mapper)

Print a row of characters across the terminal
Pure Bash This will print a row of characters the width of the screen without using any external executables. In some cases, COLUMNS may not be set. Here is an alternative that uses tput to generate a default if that's the case. And it still avoids using tr. $ printf -v row "%${COLUMNS:-$(tput cols)}s"; echo ${row// /#} The only disadvantage to either one is that they create a variable.

File rotation without rename command
Rotates log files with "gz"-extension in a directory for 7 days and enumerates the number in file name. i.e.: logfile.1.gz > logfile.2.gz I needed this line due to the limitations on AIX Unix systems which do not ship with the rename command.

Rename files in batch

Run bash on top of a vi session (saved or not saved), run multiple commands, instead of one at a time with :!(bashcommand), type exit and [enter] to get back to where you left off in vi.
Helps when I'm editing a script and want to double check some commands without having to exit out of vi multiple times or having to use another terminal session.

show how many regex you use in your vim today
i want to count how many regex code i have used in vim in a long time so i make a directory in svn host and post record to this directory of course i dont want to post manually so i worte a script to do that and this is the core thing to do

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

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