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Which files/dirs waste my disk space
This is sample output - yours may be different.
0

du -h / | grep -w "[0-9]*G"

pashutinsky · 2011-07-23 19:02:11 3
edit a executable script

vie myscript will find where myscript is, and then use vi to edit that file. Not much trick, but saves typing if you use it a lot.
This is sample output - yours may be different.
0

vie(){vi $(which $1)}

lpb612 · 2011-10-03 15:07:19 7
Execute git submodule update in parallel with xargs
This is sample output - yours may be different.
0

git submodule status | awk '{print $2}' | xargs -P5 -n1 git submodule update --init

lox · 2012-06-27 19:26:56 3
Java app with dynamic classpath

Lauching an app including jars in an adjacent lib folder to its classpath
This is sample output - yours may be different.
0

java -jar app.jar -cp $(echo lib/*.jar | tr ' ' ':')

xymor · 2012-10-29 12:51:46 16

Simple calendar from google spanning the width of the terminal

Using the gcalcli interface to google calendar, print the calendar for the next 2 weeks according to the width of the terminal being used. * Remove "--mon" to start week on sunday, * Change 2 for more or less weeks gcalcli --mon --width $((COLUMNS/8)) calm for whole month Show Sample Output

This is sample output - yours may be different.

+------------+------------+------------+------------+------------+------------+------------+
|Monday      |Tuesday     |Wednesday   |Thursday    |Friday      |Saturday    |Sunday      |
+------------+------------+------------+------------+------------+------------+------------+
|01 Jul      |02 Jul      |03 Jul      |04 Jul **   |05 Jul      |06 Jul      |07 Jul      |
|            |            |            |            |            |            |            |
|10:00am     |James       |            |            |            |Tom's       |1:00pm      |
|Hair apt    |birthday    |            |            |            |birthday    |German      |
|            |            |            |            |            |            |Grand Prix  |
|            |6:30pm BBQ  |            |            |            |            |            |
|            |at Toby's   |            |            |            |            |            |
|            |house       |            |            |            |1:00pm      |            |
|            |            |            |            |            |Qualifying  |            |
|            |            |            |            |            |Session     |            |
|            |            |            |            |            |(German     |            |
|            |            |            |            |            |Grand Prix) |            |
+------------+------------+------------+------------+------------+------------+------------+
|08 Jul      |09 Jul      |10 Jul      |11 Jul      |12 Jul      |13 Jul      |14 Jul      |
|            |            |            |            |            |            |            |
|Degree      |Michael     |Samantha    |Alice       |            |Sara &      |Zoe         |
|Congregation|birthday    |birthday    |birthday    |            |Scott       |birthday    |
|            |            |            |            |            |            |            |
|3:45pm      |            |            |            |            |            |            |
|Degree      |            |            |            |            |            |            |
|Congregation|            |            |            |            |            |            |
|Reception   |            |            |            |            |            |            |
|            |            |            |            |            |            |            |
+------------+------------+------------+------------+------------+------------+------------+

gcalcli --mon --width $((COLUMNS/8)) calw 2

jaw42 · 2013-07-04 12:28:51 40

Show the network stats for a given day

Choose the /var/log/sa/saXX log based on what day you want to view. You can use ifconfig to find the name of the interface. You can use the -s flag to specify a certain time period, e.g. -s 12:00:00 -e 14:00:00 Show Sample Output

sar -n DEV -f /var/log/sa/sa05 |awk '{if ($3 == "IFACE" || $3 == "eth0" || $2 == "eth0") {print}}'

jmorganwalker · 2014-03-06 21:32:54 11

Search google.com on your terminal

Mac OSX friendly version of google function Show Sample Output
This is sample output - yours may be different.
```
http://www.bbc.co.uk/schoolradio/subjects/earlylearning/nurserysongs/P-T/row_row_row_your_boat
http://www.bbc.co.uk/schoolradio/subjects/earlylearning/nurserysongs/P-T/row_row_row_your_boat
http://www.wordsforlife.org.uk/songs/row-your-boat
http://supersimplelearning.com/other-songs/row-row-row-your-boat/
http://wiki.kcls.org/index.php/Row,_Row,_Row_Your_Boat
http://bussongs.com/songs/row-row-row-your-boat.php
```
0

function google { Q="$@";GOOG_URL='https://www.google.com/search?tbs=li:1&q=';AGENT="Mozilla/4.0";stream=$(curl -A "$AGENT" -skLm 10 "${GOOG_URL}${Q//\ /+}");echo "$stream" | grep -o "href=\"/url[^\&]*&" | sed 's/href=".url.q=$[^\&]*$.*/\1/';}

davethomas11 · 2014-06-18 17:20:41 6
Basic search for Quassel PostgreSQL database

Replace the credentials to psql if necessary, and the my-query part with your query. Show Sample Output
This is sample output - yours may be different.
```
alias quassel-grep='psql -U quassel quassel -c "SELECT message FROM backlog ORDER BY time DESC LIMIT 1000;" | grep'

# Get messages directed at me
quassel-grep -E Tatsh[,\:]
```
0

psql -U quassel quassel -c "SELECT message FROM backlog ORDER BY time DESC LIMIT 1000;" | grep my-query

Tatsh · 2014-10-12 19:53:06 7
Start Mandala Integration
This is sample output - yours may be different.
0

nohup StartMand.sh -e -b -d mandala.cfg GET_FILES SALES_TRX AGG_TRX &

slyfer · 2015-05-19 11:25:43 9
create 7 variables using output of date command

minimal oneliner to keep track of time Show Sample Output
This is sample output - yours may be different.
```
echo $year $month $day $hour $minutes $seconds $epoch
2015 11 10 23 24 21 1447226661
```
0

read year month day hour minutes seconds epoch _ < <(date '+%Y %m %d %H %M %S %s')

snorf · 2015-11-11 07:27:37 9
Recursive script to find all epubs in the current dir and subs, then convert to mobi using calibre's ebook-convert utility

If you want to change it to find other ebook format change the find extension and the output extensions for whatever that is.
This is sample output - yours may be different.
0

$find . -name '*.mobi' -exec ebook-convert {} {}.epub \;

vfdurder · 2015-12-29 17:55:17 10
Use vi style for edit command line.

after this command, only needs press ESC to edit command line.
This is sample output - yours may be different.
0

set -o vi

Wallebot · 2017-02-27 19:04:33 22
Reclaim standard in from the tty for a script that is in a pipeline

Tests to see if stdin (0) is NOT a terminal. Tests to see if stdout (1) IS a terminal. Copies stdout (opened for write) to stdin (open for read). Show Sample Output
This is sample output - yours may be different.
```
# THIS IS A BASIC DEMO SCRIPT
$ cat ttytest.sh 
#!/bin/bash

while read -t 0.05 ; do
        echo -n . 
done ; echo
read -p "Hello? " R1
echo "${R1:-No reply}"
[ ! -t 0 ] && [ -t 1 ] && exec 0<&1
read -p "Hello?? " R2
echo "${R2:-No reply}"


# RUN IT WITHOUT PIPING
$ bash ttytest.sh 

Hello? hi
hi
Hello?? hi again
hi again


# RUN IT WITH PIPING
$ date | bash ttytest.sh 
.
No reply
Hello?? Hi 
Hi
```
0

[ ! -t 0 ] && [ -t 1 ] && exec 0<&1

pdxdoughnut · 2017-04-12 00:10:27 18
grep multiple value matches that matches all togetger one the same value(concurrency) also
This is sample output - yours may be different.
0

grep '^$default\|smtp\|relay$[^ ]*concurrency[^ ]*'

aysadk · 2017-06-04 15:26:35 17
Get the current epoch in base32
This is sample output - yours may be different.
0

obase=16; echo "$(date +%s)" | bc | xxd -r -p | base32

malathion · 2017-06-26 16:58:38 22
nc check udp port
This is sample output - yours may be different.
0

nc -vz -u 8.8.8.8 53

aysadk · 2017-08-16 19:57:42 17
Replace lines in files with only spaces/tabs with simple empty line (within current directory - recursive)
This is sample output - yours may be different.
0

find . -type f -regex '.*\.$cpp\|h$' -exec sed -i 's/^[[:blank:]]\+$//g' {} \;

swarzynski · 2020-09-15 09:07:08 145
Delete posts from MyBB Board as User

As a user, deletes all your posts from a MyBB board (provided you have the search page listings of all your posts saved into the same directory this command is run from). Full command: for i in *; do cat $i | grep pid | sed -e 's/;/\ /g' -e 's/#/\ /g' -e 's/pid=/\ /g' | awk -F ' ' '{print $2}' >> posts.txt; done; for c in `cat posts.txt`; do curl --cookie name= --data-urlencode name=my_post_key=\&delete=1\&submit=Delete+Now\&action=deletepost\&pid=$c --user-agent Firefox\ 3.5 --url http://url/editpost.php?my_post_key=\&delete=1\&submit=Delete+Now\&action=deletepost\&pid=$c; sleep 2s; done; echo
This is sample output - yours may be different.
0

curl --cookie name=<cookie_value> --data-urlencode name=my_post_key=<post_key>\&delete=1\&submit=Delete+Now\&action=deletepost\&pid=$c --user-agent Firefox\ 3.5 --url http://url/editpost.php?my_post_key=<post_key>\&delete=1\&submit=Delete+Now\&action=dele

mrlockfs · 2010-07-14 01:50:48 5
Export usernames and passwords from sslstrip log
This is sample output - yours may be different.
0

grep -i -f password_tokens sslstrip.log | awk ' BEGIN { RS="&" } { print $1 }' | grep -i -f tokens_file

anhpht · 2010-12-18 15:42:00 4
Wait the end of prog1 and launch prog2
This is sample output - yours may be different.
0

while pkill -0 prog1; do sleep 10; done; prog2

daa · 2011-02-12 02:53:53 5
dd with progress bar and remaining time displayed
This is sample output - yours may be different.
0

SIZE=`fdisk -s /dev/sdx`; dd if=/dev/sdx bs=1M | pv -s "$SIZE"k > hdd.img

dash · 2011-06-12 20:00:26 3
Copy your ssh public key to a server from a machine that doesn't have ssh-copy-id

Creates the .ssh directory on the remote host with proper permissions, if it doesnt exist. Appends your public key to authorized_keys, and verifies it has proper permissions. (if it didnt exist it may have been created with undesireable permissions). *Korn shell syntax, may or may not work with bash
This is sample output - yours may be different.
0

ssh <user>@<host> 'mkdir -m 700 ~/.ssh; echo ' $(< ~/.ssh/id_rsa.pub) ' >> ~/.ssh/authorized_keys ; chmod 600 ~/.ssh/authorized_keys'

Halki · 2011-10-03 15:59:43 3

Embed .torrent in a .jpg file

exiftool can also extract the 'comment' into a file :) Show Sample Output

exiftool '-comment<=ubuntu-11.10-alternate-i386.iso.torrent' hello.jpg

dp3XTg · 2012-03-12 04:42:15 7

List all symbolic links in current directory

Just added maxdepth
This is sample output - yours may be different.
0

find . -maxdepth 1 -type l

Fidelix · 2012-12-30 20:49:28 4
Revoke an existing user's group memberships and add another user to those same groups,

Assuming a convention looking group file, this command will eject oldspiderman from the leagueofsuperfriends group and add newspiderman: oldspiderman:x:551: aquaman:x:552: superman:x:553: newspiderman:x:554: leagueofsuperfriends:x:1000:superman,oldspiderman,superman,aquaman
This is sample output - yours may be different.
0

sed -i.awkbak "s/$[:,]$oldspiderman/\1newspiderman/" /etc/group

iPaulo · 2013-03-01 23:48:20 4
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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)

Show a zoomable world map

show a zoomable world map

Use last argument of last command

Bash shortcut to work with the last argument of your last command

How to extract 5000 records from each table in MySQL

How to extract data from one table: mysqldump --opt --where="true LIMIT 5000" dbinproduzione tabella > miodbditest_tabella.sql

Find usb device in realtime

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

Delicious search with human readable output

You can install filterous with $ sudo apt-get install libxslt1-dev; sudo easy_install -U filterous

Start vim without initialization

This will skip all initializations. Especially useful when your ~/.vimrc has something wrong.

Install pip with Proxy

Installs pip packages defining a proxy

Double your disk read performance in a single command

(WARN) This will absolutely not work on all systems, unless you're running large, high speed, hardware RAID arrays. For example, systems using Dell PERC 5/i SAS/SATA arrays. If you have a hardware RAID array, try it. It certainly wont hurt. You may be can test the speed disk with some large file in your system, before and after using this: $ time dd if=/tmp/disk.iso of=/dev/null bs=256k To know the value of block device parameter known as readahead. $ blockdev --getra /dev/sdb And set the a value 1024, 2048, 4096, 8192, and maybe 16384... it really depends on the number of hard disks, their speed, your RAID controller, etc. (see sample)

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"

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