Commands by stubby

Commands by stubby (12)

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move you up one directory quickly

In bash, this turns on auto cd. If a command is just a directory name, it cd's into that directory. Show Sample Output
This is sample output - yours may be different.
```
$ ..
cd ..
$ ~
cd ~
$ ../..
cd ../..
```
16

shopt -s autocd

stubby · 2012-04-01 14:34:29 9
Print sorted list of all installed packages (Debian)

You can then do all the processing you wish... It's already sorted and only installed packages are listed. EDIT: Now contains formatting option to list only package names! Also, disables truncating long package names. NOTE: it's tilda i not dash i
This is sample output - yours may be different.
0

aptitude search -F "%p" --disable-columns ~i

stubby · 2011-03-15 01:14:30 12
Get IP from hostname
This is sample output - yours may be different.
4

dig +short google.com

stubby · 2010-10-26 03:22:14 9
List contents of jar

This of course assumes that lesspipe is installed. You can view the contents of many, many types of files in this way. Once lesspipe is installed, add to your .bashrc export LESSOPEN="| /usr/bin/lesspipe %s" less file.jar export LESSCLOSE="/usr/bin/lesspipe %s %s" or eval "$(lesspipe)"
This is sample output - yours may be different.
0

LESSOPEN="| /usr/bin/lesspipe %s" less file.jar

stubby · 2010-10-13 12:57:08 4
List files with names in quotes.

bash
This is sample output - yours may be different.
-4

for i in *; do echo '"'$i'"'; done

stubby · 2010-08-17 16:58:48 4
List files by quoting or escaping special characters.

Tested and works on Linux. Show Sample Output
This is sample output - yours may be different.
```
escape:
Some\ Directory

shell:
'Some Directory'

c:
"Some Directory"
```
4

ls --quoting-style={escape,shell,c}

stubby · 2010-08-17 16:50:38 4
List files with quotes around each filename
This is sample output - yours may be different.
23

ls -Q

stubby · 2010-08-17 15:01:50 14
See The MAN page for the last command

This works in bash. The "!!:0" limits the argument to man to be only the first word of the last command. "!!:1" would be the second, etc.
This is sample output - yours may be different.
8

man !!:0

stubby · 2010-08-14 15:38:55 10
Prepend string to filename
This is sample output - yours may be different.
-4

for i in *; do mv $i prependtext$i; done

stubby · 2010-08-14 14:57:20 17
calculate in commandline with bash

Only works for integer arithmetic. Show Sample Output
This is sample output - yours may be different.
```
2
```
2

echo $(( 1+1 ))

stubby · 2010-08-08 23:21:15 4
calculate in commandline with perl
This is sample output - yours may be different.
-1

perl -e 'print 1+1 ."\n";'

stubby · 2010-08-08 23:19:10 4
calculate in commandline with dc

Us dc instead of bc. RPN FTW!!! Show Sample Output
This is sample output - yours may be different.
```
2
```
-1

dc -e "1 1 + p"

stubby · 2010-08-08 23:14:30 4

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debian/ubuntu get installed nvidia driver version from terminal

i've been writing a bash script where i needed to query the installed version number of the nvidia driver when it's not loaded. Unfortunately i have not found a easy way of doing this. If i'm a stupid person, please enlighten me of a better way ;)

High resolution video screen recording

$ gorecord foo.mp4 I've tried all of the screen recorders available for Linux and this is easily the best. xvidcap segfaults; VNC is too much hassle. There are alternatives of this command already here that I am just too lazy to reply to. Messing with the frames per second option, -r, 25 seems to be the best. Any lower and the video will look like a flipbook, if it records at all - -r 10 won't - any faster is the same, oddly enough. Edit: CLF doesn't like my long command to add audio, so here it is in the description. $ goaddaudio() ${ $if [ $# != 3 ]; then $ echo 'goaddaudio < audio > < src video > < dst video >' $ return $ fi $ $ f=goaddaudio$RANDOM $ ffmpeg -i "$2" &> $f $ d=$( grep Duration $f | awk '{print $2}' | tr -d ',' ) && $ rm $f && $ ffmpeg -i "$1" -i "$2" -r 25 -ab 192k -ar 44100 -sameq -t $d "$3" $}

Download an Entire website with wget

Convert a bunch of HTML files from ISO-8859-1 to UTF-8 file encoding in a folder and all sub-folders

This is my first attempt at converting all HTML files to UTF-8 file encoding, including all subfolders. Theres probably a much more compact way to do it, but I'm quite proud of it with my windows background ;)

Grab all .flv files from a webpage to the current working directory

I wanted all the 'hidden' .flv files from the http link in the command line; wget seemed appropriate, fed with output from lynx, grep the flv files and the normalised via sed (to remove the numeric bullet). Similar to the 'Grab mp3 files' fu. Replace link with your own, grep arg with something more interesting ;) See here for something along the same lines... http://www.commandlinefu.com/commands/view/1006/grab-mp3-files-from-your-favorite-netcasts-mp3blog-or-sites-that-often-have-good-mp3s Hope you find it useful! Improvements welcome, naturally.

return external ip

Find the top 10 directories containing the highest number of files

It can be used to pinpoint the path(s) where the largest number of files resides when running out of free i-nodes

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

recursively change file name from uppercase to lowercase (or viceversa)

Example of zsh globing, glob qualifier, and substitution: -Q state that the parameter will contain a glob qualifier. (**/)(*) is recursive (.) is our glob qualifier, with states the match is a file "." The first parameter $1, is then substituted with $2 but with lowercasing '(L)' ... a (U) would of course be from lower to upper.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

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