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connect to all screen instances running

connects to all the screen instances running.
This is sample output - yours may be different.
3

screen -ls | grep pts | gawk '{ split($1, x, "."); print x[1] }' | while read i; do gnome-terminal -e screen\ -dx\ $i; done

microft · 2009-04-22 10:36:39 10
What is the sound of your memory ?
This is sample output - yours may be different.
-11

sudo cat /dev/mem > /dev/dsp

eastwind · 2009-04-22 07:26:10 4

How many Non-free software is on your machine ?

tell you how many Non free software is on your machine, which package it is and which restriction on freedom it has . require vrms package , vrms mean virtual Richard M. Stallman :) Show Sample Output

-3

vrms

eastwind · 2009-04-22 06:54:20 4

need ascii art pictures for you readme text ?

Require boxes and / or cowsay packages. After input boxes -d dog , type your text and then press ctrl + d . Same goes for cowsay . Show Sample Output

boxes -d dog or cowsay -f tux $M

eastwind · 2009-04-22 06:01:20 5

Need an ascii art font for you readme text ?

need toilet package , same goes for figlet showfigfonts | less : give the list of font available for options Show Sample Output
This is sample output - yours may be different.
```
_____                _ __  __      
|  __ \              | |  \/  |     
| |__) |___  __ _  __| | \  / | ___ 
|  _  // _ \/ _` |/ _` | |\/| |/ _ \
| | \ \  __/ (_| | (_| | |  | |  __/
|_|  \_\___|\__,_|\__,_|_|  |_|\___|
```
0

toilet -f big ReadMe

eastwind · 2009-04-22 05:48:13 4

When you have time to consume

sudo apt-get install moon-buggy An ascii 2D game where you control a mooncar and try to avoid moonhole by jumping (press space ) Show Sample Output

-4

moon-buggy

eastwind · 2009-04-22 05:41:40 6

When feeling boring this command help too

sudo apt-get install bb A demoscene intro in ascii art with tracker song
This is sample output - yours may be different.
0

bb

eastwind · 2009-04-22 05:33:25 7
decoding Active Directory date format

When Ldapsearch queries an Active directory server, all the dates are shown using a timestamp of 18 digits. This perl regexp decodes them in a more human friendly notation. 11644473600 corresponds to some microsoft epoch. Show Sample Output
This is sample output - yours may be different.
```
badPasswordTime: DATE-AD(Mon Apr  6 20:53:42 2009)
lastLogon: DATE-AD(Mon Apr  6 20:55:07 2009)
pwdLastSet: DATE-AD(Tue Mar 24 12:53:42 2009)
accountExpires: DATE-AD(Sun Nov  1 00:00:00 2009)
```
4

ldapsearch -v -H ldap://<server> -x -D cn=<johndoe>,cn=<users>,dc=<ourdomain>,dc=<tld> -w<secret> -b ou=<lazystaff>,dc=<ourdomain>,dc=<tld> -s sub sAMAccountName=* '*' | perl -pne 's/(\d{11})\d{7}/"DATE-AD(".scalar(localtime($1-11644473600)).")"/e'

flux · 2009-04-22 00:57:34 5
synchronicity

The British Government entering in the Gregorian era. Show Sample Output
This is sample output - yours may be different.
```
September 1752   
Su Mo Tu We Th Fr Sa
       1  2 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
```
10

cal 09 1752

flux · 2009-04-22 00:13:19 38
printing barcodes

64 elements max on 16 rows, 4 cols. GNU Barcode will adapt automagically the width and the eight of your elements to fill the page. Standard output format is PostScript.
This is sample output - yours may be different.
8

ls /home | head -64 | barcode -t 4x16 | lpr

flux · 2009-04-21 22:54:45 16
restoring some data from a corrupted text file

man tac When there is a bad block in the middle of your file, you can see its begninning with `cat' and its end with `tac'. But both commands terminates with an error. So this sequence rebuilds a new file without badblock. Show Sample Output
This is sample output - yours may be different.
```
cat: badfile.log: Input/output error
tac: badfile.log: Input/output error
```
15

( cat badfile.log ; tac badfile.log | tac ) > goodfile.log

flux · 2009-04-21 22:06:05 10
Find different filetypes in current directory

Show Sample Output
This is sample output - yours may be different.
```
./script.sh
./file.txt
```
-6

find . -maxdepth 1 -type f -name '*.sh' -o -name '*.txt'

P17 · 2009-04-20 17:29:13 7
Have you mooed today?
This is sample output - yours may be different.
-9

apt-get moo

unixmonkey1055 · 2009-04-20 17:09:37 9
Mount important virtual system directories under chroot'ed directory

The command is useful when, e.g., booting an existing system with a rescue or installation CD where you need to chroot into the hard-disk and be able to do stuff which accesses kernel info (e.g. when installing Ubuntu desktop with LVM2 you need to mount and chroot the hard disk from a shell window in order to install packages and run initramfs inside chroot). The command assumes that /mnt/xxx is where the chroot'ed environment's root file system on the hard disk is mounted.
This is sample output - yours may be different.
3

for i in sys dev proc; do sudo mount --bind /$i /mnt/xxx/$i; done

amosshapira · 2009-04-20 16:52:14 14
Set Time Zone in Ubuntu

Reconfigures time zone in Ubuntu, which I cannot figure out how to do through the GUI. Worked like a charm to set my time zone to CEST from EDT.
This is sample output - yours may be different.
3

sudo dpkg-reconfigure tzdata

hank · 2009-04-20 02:08:23 9
List your largest installed packages.

Requires the "wajig" package to be installed.
This is sample output - yours may be different.
14

wajig large

udim · 2009-04-19 20:26:26 15
Find a file's package or list a package's contents.

This is the fastest method to search the Debian package database. Requires the dlocate package. The dlocate db updates periodically, but you may force an update with # dlocate-update
This is sample output - yours may be different.
4

dlocate [ package | string ]

udim · 2009-04-19 20:19:06 8
Randomize the order of lines in a text file.

Replace FILE with a filename (or - for stdin).
This is sample output - yours may be different.
-3

awk 'BEGIN {srand()} {print int(rand()*1000000) "\t" $0}' FILE | sort -n | cut -f 2-

udim · 2009-04-19 20:04:58 7
Show all video files in the current directory (and sub-dirs)
This is sample output - yours may be different.
-1

find -type f -printf '%P\000' | egrep -iz '\.(avi|mpg|mov|flv|wmv|asf|mpeg|m4v|divx|mp4|mkv)$' | sort -z | xargs -0 ls -1

udim · 2009-04-19 19:45:11 23
When feeling down, this command helps

sudo apt-get install sl man sl
This is sample output - yours may be different.
24

sl

Svish · 2009-04-19 15:24:03 25
For Gentoo users : helping with USE / emerge

This command puts all the flags of the USE variable actually used by the packages you emerged to the file "use", and those which are unused but available to the file "notuse"
This is sample output - yours may be different.
1

emerge -epv world | grep USE | cut -d '"' -f 2 | sed 's/ /\n/g' | sed '/[(,)]/d' | sed s/'*'//g | sort | uniq > use && grep ^- use | sed s/^-// | sed ':a;N;$!ba;s/\n/ /g' > notuse && sed -i /^-/d use && sed -i ':a;N;$!ba;s/\n/ /g' use

Keruspe · 2009-04-19 07:54:08 4
Mount directories in different locations

Like symlinked directories, you can mount a directory at a different location. For example mounting a directory from one location in to the http root without having to make your program follow symlinks or change permissions when reading.
This is sample output - yours may be different.
4

mount --bind /old/directory/path /new/directory/path

dryicerx · 2009-04-19 01:44:59 8
Terminal redirection

can display the commands and their output to another user who is connected to another terminal, by example pts/3
This is sample output - yours may be different.
10

script /dev/null | tee /dev/pts/3

carlosfajardo · 2009-04-19 00:29:45 23
(Debian/Ubuntu) Discover what package a file belongs to

'dpkg -S' just matches the string you supply it, so just using 'ls' as an argument matches any file from any package that has 'ls' anywhere in the filename. So usually it's a good idea to use an absolute path. You can see in the second example that 12 thousand files that are known to dpkg match the bare string 'ls'. Show Sample Output
This is sample output - yours may be different.
```
user@host:$ dpkg -S /bin/ls
coreutils: /bin/ls
user@host:$ dpkg -S ls | wc -l
12831
```
45

dpkg -S /usr/bin/ls

bwoodacre · 2009-04-18 18:18:23 25
Burn CD/DVD from an iso, eject disc when finished.

cdrecord -scanbus will tell you the (x,y,z) value of your cdr (for example, mine is 3,0,0)
This is sample output - yours may be different.
2

cdrecord dev=0,0,0 -v -eject yourimage.iso

rissajeanne · 2009-04-17 23:44:22 6
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Create a new file

Generate list of words and their frequencies in a text file.

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)

Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Install pip with Proxy

Installs pip packages defining a proxy

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Backup with versioning

Apart from an exact copy of your recent contents, also keep all earlier versions of files and folders that were modified or deleted. Inspired by EVACopy http://evacopy.sourceforge.net

count processes with status "D" uninterruptible sleep

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"

Create incremental backups of individual folders using find and tar-gzip

Problem: I wanted to backup user data individually, using and incremental method. In this example, all user data is located in "/mnt/storage/profiles", and about 25 folders inside, each with a username ( /mnt/storage/profiles/mike; /mnt/storage/profiles/lucy ...) I need each individual folder backed up, not the whole "/mnt/storage/profiles". So, using find while excluding directories depth and creating two variables (tarfile=username & desdir=destination), tar will create a .tgz file for each folder, resulting in a "mike_2013-12-05.tgz" and "lucy_2013-12-05.tgz".

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

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