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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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Recursivly search current directory for files larger than 100MB

Convert PDF to JPEG using Ghostscript

Converting your PDF file to JPEG images. You can set resolution by -r option (default: 72dpi).

Find usb device in realtime

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

send tweets to twitter (and get user details)

great for outputting tweets from cron jobs and batch scripts

Add the time to BASH prompt

Adds the time in 12hr AM/PM format to the beginning of a prompt. Change \@ to \t for 24-hour time or \T for 12hr without AM/PM. To keep the time the next time you open a terminal, edit ~/.bashrc and stick the command at the bottom.

Check your bash shell for vulnerability to the ShellShock exploit

If this command prints 'x' then your shell is vulnerable. Null output confirms that you are protected. Further reading: http://allanmcrae.com/2014/09/shellshock-and-arch-linux/

lotto generator

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.

Synchronise a file from a remote server

You will be prompted for a password unless you have your public keys set-up.

Sharing file through http 80 port

From the other machine open a web navigator and go to ip from the machine who launch netcat, http://ip-address/ If you have some web server listening at 80 port then you would need stop them or select another port before launch net cat ;-) * You need netcat tool installed

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All commands (14,187)

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