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List your largest installed packages (on Debian/Ubuntu)

dpigs is in the package debian-goodies (debian/ubuntu)
This is sample output - yours may be different.
11

dpigs

xrm0 · 2009-10-26 20:38:17 18
Calculating series with awk: add numbers from 1 to 100

Calculating series with awk only, no need for seq: add numbers from 1 to 100 Variations: 1+3+...+(2n-1) = n^2 awk 'BEGIN {for(i=1;i<=19;i+=2)sum+=i}; END {print sum}' /dev/null # displays 100 1/2 + 1/4 + ... = 1 awk 'BEGIN {for(i=1;i<=10;i++)sum+=1/(2**i)}; END {print sum}' /dev/null # displays 0.999023 Show Sample Output
This is sample output - yours may be different.
```
5050
```
0

awk 'BEGIN {for(i=1;i<=100;i++)sum+=i}; END {print sum}' /dev/null

dennisw · 2009-10-26 18:24:57 3
Get ssh server fingerprints

Get your server's fingerprints to give to users to verify when they ssh in. Publickey locations may vary by distro. Fingerprints should be provided out-of-band. Show Sample Output
This is sample output - yours may be different.
```
2048 b6:de:15:9b:00:c1:f5:f8:68:g9:43:9b:94:81:c5:c9 /etc/ssh/ssh_host_rsa_key.pub (RSA)
1024 e5:60:ff:6a:1f:0f:01:d0:14:6b:89:fa:64:f3:ae:2a /etc/ssh/ssh_host_dsa_key.pub (DSA)
```
4

ssh-keygen -l -f /etc/ssh/ssh_host_rsa_key.pub && ssh-keygen -l -f /etc/ssh/ssh_host_dsa_key.pub

Mikelifeguard · 2009-10-26 17:52:41 4
What is my ip?
This is sample output - yours may be different.
10

curl http://www.whatismyip.org/

timothybeeler · 2009-10-26 17:40:56 9
Remove CR LF from a text file

conversely, you can type flip -m to convert the file back to MS line endings.
This is sample output - yours may be different.
0

flip -u $FILE

linuxrawkstar · 2009-10-26 17:33:26 4
Remove CR LF from a text file

Remove CR LF (CRLF) from a text file. use man:tr to get more info about removing other characters from a file. and even character to character replacements.
This is sample output - yours may be different.
3

tr -d '\r\n' < input_file.txt > output_file.txt

nadavkav · 2009-10-26 16:12:21 6
What is my ip?
This is sample output - yours may be different.
8

curl -s checkip.dyndns.org | grep -Eo '[0-9\.]+'

hugin · 2009-10-26 09:15:31 3
get ^DJI
This is sample output - yours may be different.
-1

getdji (){local url sedcmd;url='http://finance.yahoo.com/q?d=t&s=^DJI';sedcmd='/(DJI:.*)/,/Day.*/!d;s/^ *//g;';sedcmd="$sedcmd/Change:/s/Down / -/;/Change:/s/Up / +/;";sedcmd="$sedcmd/Open:/s//& /";lynx -dump "$url" | sed "$sedcmd"; }

twfcc · 2009-10-26 09:00:18 5
What is my ip?

See more details at http://blog.amit-agarwal.co.in/2008/12/01/get-you-ip-address-like-whatismyipcom/ Show Sample Output
This is sample output - yours may be different.
```
122.167.6.97
```
-2

w3m http://amit-agarwal.co.in/mystuff/getip_txt.php will return the ip in text format.

raj77_in · 2009-10-26 02:24:46 4
What is my ip?

See external ip with w3m, simple and fast. On a web site from Chile (spanish).
This is sample output - yours may be different.
-2

w3m miip.cl | grep ip

Cont3mpo · 2009-10-26 01:40:37 4
What is my ip?
This is sample output - yours may be different.
-2

lynx --dump "http://checkip.dyndns.org"

lmascarenhas · 2009-10-26 01:26:33 3
Mount an external FAT32 USB HDD
This is sample output - yours may be different.
-3

sudo mount -t vfat /dev/sdb1 /mnt/sdb1

steffoz · 2009-10-25 19:56:06 4
Prints per-line contribution per author for a GIT repository

You'll run into trouble if you have files w/ missing newlines at the end. I tried to use PAGER='sed \$q' git blame and even PAGER='sed \$q' git -p blame to force a newline at the end, but as soon as the output is redirected, git seems to ignore the pager.
This is sample output - yours may be different.
-1

git ls-files | while read i; do git blame $i | sed -e 's/^[^(]*(//' -e 's/^$[^[:digit:]]*$[[:space:]]\+[[:digit:]].*/\1/'; done | sort | uniq -ic | sort -nr

pipping · 2009-10-25 09:40:01 4
grep -v with multiple patterns.

That's what the sed command should've been, sorry.
This is sample output - yours may be different.
2

sed -n '/test/{/error\|critical\|warning/d;p}' somefile

pipping · 2009-10-25 09:07:00 3
List installed deb packages by size
This is sample output - yours may be different.
25

dpkg-query -Wf '${Installed-Size}\t${Package}\n' | sort -n

raspi · 2009-10-25 03:23:51 15
Prints per-line contribution per author for a GIT repository

Figures out total line contribution per author for an entire GIT repo. Includes binary files, which kind of mess up the true count. If crashes or takes too long, mess with the ls-file option at the start: git ls-files -x "*pdf" -x "*psd" -x "*tif" to remove really random binary files git ls-files "*.py" "*.html" "*.css" to only include specific file types Based off my original SVN version: http://www.commandlinefu.com/commands/view/2787/prints-total-line-count-contribution-per-user-for-an-svn-repository Show Sample Output
This is sample output - yours may be different.
```
 217167 askedrelic
  11592 bob
   3975 alice
   1276 jim
    358 tom
     64 brad
     13 Not Committed Yet
```
4

git ls-files | xargs -n1 -d'\n' -i git-blame {} | perl -n -e '/\s\((.*?)\s[0-9]{4}/ && print "$1\n"' | sort -f | uniq -c -w3 | sort -r

askedrelic · 2009-10-25 01:44:03 11
Forward connections

Forward connections to $HOSTNAME:8080 out to $HOST:80
This is sample output - yours may be different.
-2

ssh -g -L 8080:localhost:80 root@$HOST

kayowas · 2009-10-24 20:56:00 3
Monitor bandwidth by pid

Nethogs is a useful tool for monitor bandwidth consumption by pid. Tested on Debian an CentOs
This is sample output - yours may be different.
23

nethogs -p eth0

servermanaged · 2009-10-24 19:43:31 7
Convert Windows/DOS Text Files to Unix

Convert Windows/DOS Text Files to Uni Show Sample Output
This is sample output - yours may be different.
```
Convert Windows/DOS Text Files to Uni
```
-26

Convert Windows/DOS Text Files to Uni

nevzat · 2009-10-24 18:41:35 9
Display a block of text with AWK
This is sample output - yours may be different.
7

sed -n /start_pattern/,/stop_pattern/p file.txt

pipping · 2009-10-24 16:35:39 8
List bash functions defined in .bash_profile or .bashrc
This is sample output - yours may be different.
0

declare -F | sed 's/^declare -f //'

pipping · 2009-10-24 16:06:43 5
grep -v with multiple patterns.

If you wanted to do all in one command, you could go w/ sed instead
This is sample output - yours may be different.
3

sed '/test/{/error\|critical\|warning/d}' somefile

pipping · 2009-10-24 15:59:59 3
grep -v with multiple patterns.

You can use -e to pass multiple patterns.
This is sample output - yours may be different.
2

grep test somefile | grep -v -e error -e critical -e warning

pipping · 2009-10-24 15:58:11 3
Password Generation

Produces secure passwords that satisfy most rules for secure passwords and can be customized for correct output as needed. See "man pwgen" for details. Show Sample Output
This is sample output - yours may be different.
```
$ pwgen --alt-phonics --capitalize 9 10
ju7wuQu0w tahPh2hee Ooth7ag1O ieF8thai9 aeNg6thai rahLoy8ah ixeiz6Eiy OhN8Pheiz
IeHe3goi5 eeZ6ied7m 
```
8

pwgen --alt-phonics --capitalize 9 10

CafeNinja · 2009-10-24 08:36:36 40
password generator

make password randomly, default 8 chars, using bash3.X only, no external program.
This is sample output - yours may be different.
1

genpass(){local i x y z h;h=${1:-8};x=({a..z} {A..Z} {0..9});for ((i=0;i<$h;i++));do y=${x[$((RANDOM%${#x[@]}))]};z=$z$y;done;echo $z ;}

twfcc · 2009-10-24 04:32:31 13
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Batch rename extension of all files in a folder, in the example from .txt to .md

Batch rename extension of all files in a folder, in the example from .txt to .md mmv most likely must be installed, but is very powerfull when you want to move/copy/append/link multiple files by wildcard patterns.

Extended man command

This microscript looks up a man page for each word possible, and if the correct page is not found, uses w3m and Google's "I'm feeling lucky" to output a first possible result. This script was made as a result of an idea on a popular Linux forum, where users often send other people to RTFM by saying something like "man backup" or "man ubuntu one". To make this script replace the usual man command, save it as ".man.sh" in your home folder and add the following string to the end of your .bashrc file: alias man='~/.man.sh'

Adding Prefix to File name

Generates a TV noise alike output in the terminal

Generates a TV noise alike output in the terminal. Can be combined with https://www.commandlinefu.com/commands/view/9728/make-some-powerful-pink-noise

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.

SHA256 signature sum check of file

get the SHA256 sum signatur for a file

Write comments to your history.

A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

An easter egg built into python to give you the Zen of Python

find with high precission (nanoseconds 1/1,000,000,000s) the last changed file.

this is good for variables if you have many script created files and if you want to know which one is the last created/changed one..

search user defined function in c language

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