Commands by depesz

Commands by depesz (36)

sorted by

print line and execute it in BASH
This is sample output - yours may be different.
0

set -x

depesz · 2010-12-15 09:17:04 4
recursive transform all contents of files to lowercase

In this way it doesn't have problems with filenames with spaces.
This is sample output - yours may be different.
1

find . -type f -print0 | xargs -0 perl -pi.save -e 'tr/A-Z/a-z/'

depesz · 2010-11-25 13:55:34 5
Sniff ONLY POP3 authentication by intercepting the USER command

dsniff is general purpose password sniffer, it handles *lots* of different protocols, but it also handles tcp-style expressions for limiting analyzed traffic - so I can limit it to work on pop3 only. Show Sample Output
This is sample output - yours may be different.
```
dsniff: listening on any [tcp port pop3]
-----------------
11/18/10 10:41:01 tcp xxx.48323 -> remote.host.110 (pop3)
USER user1
PASS pass-for-user1

-----------------
11/18/10 10:41:28 tcp xxx.48321 -> other.host.110 (pop3)
USER user2
PASS pass-for-user2
```
2

dsniff -i any 'tcp port pop3'

depesz · 2010-11-18 09:43:40 3
Given $PID, print all child processes on stdout

Simpler.
This is sample output - yours may be different.
1

ps uw --ppid $PID

depesz · 2010-11-13 22:21:09 4
Random unsigned integer

works at least in bash. returns integer in range 0-32767. range is not as good, but for lots of cases it's good enough.
This is sample output - yours may be different.
7

echo $RANDOM

depesz · 2010-11-09 09:57:44 6
Find only *.doc and *xls files on Windows partition

When using regex - there is no need to use -o and 2nd regex.
This is sample output - yours may be different.
1

find /mountpoint -type f -iregex '.*\.$doc\|xls$'

depesz · 2010-11-04 18:15:35 4
Get just the IP for a hostname

has the benefit of being a bit more cross-platform.
This is sample output - yours may be different.
3

getent hosts google.com | awk '{print $1}'

depesz · 2010-11-03 12:02:05 7
List only executables installed by a debian package

Safe for whitespaces in names.
This is sample output - yours may be different.
5

dpkg -L iptables | perl -lne 'print if -f && -x'

depesz · 2010-10-30 15:47:51 8
Take screenshot through SSH

Of course it requires import command, from imagemagick tools, but it's simpler to type, and imagemagick is usefull anyway.
This is sample output - yours may be different.
27

DISPLAY=:0.0 import -window root /tmp/shot.png

depesz · 2010-10-28 12:00:00 46
Replace spaces in a filename with hyphens

As long as you have perl based rename. You can check: =$ rename --help Unknown option: help Usage: rename [-v] [-n] [-f] perlexpr [filenames] That's the good one.
This is sample output - yours may be different.
2

rename 's/ /-/g' *

depesz · 2010-10-23 17:03:54 14
Trim png files in a folder
This is sample output - yours may be different.
0

for file in *.png; do mogrify -trim "$file"; done

depesz · 2010-10-21 13:58:05 5
< 1 2

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

backup delicious bookmarks

Useful script to backup all your delicious bookmarks. With decilicious shutting down soon , it could be useful

Google text-to-speech in mp3 format

list block devices

Shows all block devices in a tree with descruptions of what they are.

Find usb device in realtime

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

Block all IPv4 addresses that has brute forcing our ssh server

For ipv6 use: grep -oE "\b([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4}\b"

Mount windows share to the specified location including credentials

Replace IP address with yours IP.

Watch the size of a directory using figlet

You can substitute /home/$USER with any path you like.

Adjust display hardware brightness [dbus way]

Fast portscanner via Parallel

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"

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands by depesz