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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
Force eject of CD on OSX

sometimes this helps, when eject button fails
This is sample output - yours may be different.
0

hdiutil eject -force /Volumes/CDNAME

zagdul · 2013-04-23 14:32:38 4
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Display text as though it is being typed out in real time

Pipe Viewer allows you to monitor the progress of a data transfer or command, or to show the time elapsed, among other things. In this use, it limits the transfer rate of the echo command to 10 bytes per second, making your text appear to be typed out in real time as in Hollywood movies. Fun!

Easily decode unix-time (funtion)

Delete a file/directory walking subdirectories (bash4 or zsh)

Perform a branching conditional

This will perform one of two blocks of code, depending on the condition of the first. Essentially is a bash terniary operator. To tell if a machine is up: $ ping -c1 machine { echo succes;} || { echo failed; } Because of the bash { } block operators, you can have multiple commands $ ping -c1 machine && { echo success;log-timestamp.sh }|| { echo failed; email-admin.sh; } Tips: Remember, the { } operators are treated by bash as a reserved word: as such, they need a space on either side. If you have a command that can fail at the end of the true block, consider ending said block with 'false' to prevent accidental execution

Check if a domain is available and get the answer in just one line

Returns nothing if the domain exists and 'No match for domain.com' otherwise.

Make changes in any profile available immediately/Change to default group

Changes your group to the default group, has the same effect as sourcing your profile/rc file (in any shell) or logging out and back in again.

Get video information with ffmpeg

ffprobe is specially intended to get video information

formatting number with comma

it is not work with Cygwin's bash3.X. Test in Linux. use printf "%'f" number while it is floating point number

Capture video of a linux desktop

This will grab the image from desktop, starting with the upper-left corner at x=100, y=200 with a width and height of 1024?768.

Use a regex as a field separator awk

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