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Remove old kernels (*-generic and *-generic-pae) via apt-get on debian/ubuntu based systems. Tested on ubuntu 10.04 - 12.04.
When using reverse-i-search you have to type some part of the command that you want to retrieve. However, if the command is very complex it might be difficult to recall the parts that will uniquely identify this command. Using the above trick it's possible to label your commands and access them easily by pressing ^R and typing the label (should be short and descriptive).
UPDATE:
One might suggest using aliases. But in that case it would be difficult to change some parts of the command (such as options, file/directory names, etc).
Only shows files with actual changes to text (excluding whitespace). Useful if you've messed up permissions or transferred in files from windows or something like that, so that you can get a list of changed files, and clean up the rest.
In this example, file contains five columns where first column is text. Variance is calculated for columns 2 - 5 by using perl module Statistics::Descriptive. There are many more statistical functions available in the module.
find . -type f -iname '*.flac' # searches from the current folder recursively for .flac audio files
| # the output (a .flac audio files with relative path from ./ ) is piped to
while read FILE; do FILENAME="${FILE%.*}"; flac -cd "$FILE" | lame -b 192 - "${FILENAME}.mp3"; done
# for each line on the list:
# FILE gets the file with .flac extension and relative path
# FILENAME gets FILE without the .flac extension
# run flac for that FILE with output piped to lame conversion to mp3 using 192Kb bitrate
Shell function which takes a bash command as its input, and displays the following formatted output:
EXAMPLE:
command
OUTPUT:
output from command
Unset TMOUT or set it to 0 in order to prevent shell autologout. TMOUT is the number of seconds after which the present shell will be killed if it has been idle for that long.
Say you just typed a long command like this:
$ rsync -navupogz --delete /long/path/to/dir_a /very/long/path/to/dir_b
but you really want to sync dir_b to dir_a. Instead of rewriting all the command line, just type followed by , and your command line will read
$ rsync -navupogz --delete /very/long/path/to/dir_b /long/path/to/dir_a
Do you have an entire album in a unique file and want to split it in individual tracks? If you also have the cue file you can do it!
Packages for Debian-based systems users:
* cuetools shntool
* FLAC (.flac): flac
* WavPack (.wv): wavpack
* Monkey's Audio (.ape): libmac2 monkeys-audio (deb http://www.debian-multimedia.org sid main)
NOTE: "sid" packages are unstable, but I didn't have problems with them. If you prefer, use the "stable" version repository.
To transfer the tags, you can use this (works with .flac, .ogg and .mp3):
$ cuetag sample.cue split-track*.flac
