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Batch remove protection from all pdf files in a directory

Replace YOURPASSWORDHERE with the pdf password. [qpdf needed]
This is sample output - yours may be different.
-1

mkdir -p temp && for f in *.pdf ; do qpdf --password=YOURPASSWORDHERE --decrypt "$f" "temp/$f"; done && mv temp/* . && rm -rf temp

bufferoverflow · 2013-06-25 18:41:51 11
Command to find filesystem type

C:/Sys/Bin/Admin/Desktop/Brackets/Search.exe Show Sample Output
This is sample output - yours may be different.
```
brackets
```
-1

#11671

gchicareli · 2012-12-22 16:09:08 4
Display two calendar months side by side
This is sample output - yours may be different.
-1

cal -n 2 8 2018

actionless · 2018-09-04 13:31:03 334
find all references to a server in web.config files with powershell

Finds all files of a certain name and reports all line with the string. Very simple. Show Sample Output
This is sample output - yours may be different.
```
(80) C:\P\OS.svn -? ls \\webserver\c\inetpub\wwwroot -i web.config -r | Select-String "db-server"

\\webserver\c\inetpub\wwwroot\SomeApp\Web.config:72:    <add nam
e="foo" connectionString="Server=db-server;Database=foo;Integrated Security=true"/>
\\webserver\c\inetpub\wwwroot\SomeApp\Web.config:74:    <add nam
e="bar" connectionString="Server=db-server;Database=bar;Integrated Security=true"/>
```
-1

ls \\someserver\c$\inetpub\wwwroot -r -i web.config | Select-String "SomeMachineName"

cbilson · 2009-03-25 22:36:58 8
Read just the IP address of a device

another way to output the IP address' of the system
This is sample output - yours may be different.
-1

/sbin/ifconfig | grep inet | cut -f 2 -d ":" | cut -f 1 -d " "

random_bob · 2009-07-21 21:42:04 10
Python Challenge Problem 0

This is the answer to the 0th problem from the python challenge < http://www.pythonchallenge.com/ >. Replace sensible-browser with firefox, w3m or whatever. Show Sample Output
This is sample output - yours may be different.
```
http://www.pythonchallenge.com/pc/def/map.html
```
-1

sensible-browser http://www.pythonchallenge.com/pc/def/$(bc <<< 2^38).html

kzh · 2010-02-02 00:53:18 8
Console clock
This is sample output - yours may be different.
-1

watch -n1 echo

rubenmoran · 2011-02-10 08:55:09 8
Repeat a portrait eight times so it can be cut out from a 6

Yes, You could do it in the GIMP or even use Inkscape, but the command line is so much easier. This is a new version of a previous command fixing some things complained about.
This is sample output - yours may be different.
-1

montage input.jpg -auto-orient -duplicate 7 -geometry 500 -frame 5 output.jpg

anthony · 2011-06-09 14:03:01 3
shopt
This is sample output - yours may be different.
-1

help shopt

ankush108 · 2012-06-26 17:25:38 19
Install dpkg packages
This is sample output - yours may be different.
-1

sudo dpkg -i *.deb

newnumber · 2017-06-20 11:45:35 16
kill all processes of a program

kill all processes of a program
This is sample output - yours may be different.
-1

kill -9 $(pidof *program*)

salazar · 2009-02-13 18:56:58 10
Count emails in an MBOX file
This is sample output - yours may be different.
-1

grep -c '^From ' mbox_file

drewk · 2009-11-07 03:31:05 4
Add a line to crontab using sed

I needed to add a line to my crontab from within a script and didn't want to have to write my own temporary file. You may find you need to reload the crond after this to make the change take effect. e.g.: if [ -x /sbin/service ] then /sbin/service crond reload else CRON_PID=`ps -furoot | awk '/[^a-z]cron(d)?$/{print $2}'` if [ -n "$CRON_PID" ] then kill -HUP $CRON_PID fi fi The reason I had CRON_HOUR and CRON_MINS instead of numbers is that I wanted to generate a random time between midnight & 6AM to run the job, which I did with: CRON_HOUR=`/usr/bin/perl -e 'printf "%02d\n", int(rand(6))'` CRON_MINS=`/usr/bin/perl -e 'printf "%02d\n", int(rand(60));'`
This is sample output - yours may be different.
-1

crontab -l | sed -e '$G;$s-$-'"$CRON_MINS $CRON_HOUR"' * * * /usr/bin/command >/dev/null 2>&1-' | crontab -

JohnGH · 2010-01-07 11:00:05 6
draw 45deg rotated text at the center of image
This is sample output - yours may be different.
-1

convert input.png -pointsize 32 -gravity center -annotate 45 "hello, world" output.png

kev · 2011-08-26 06:49:25 5
quick find executable from locate db

This command allow you quick find any executable by keyword(s) in your system. NOTE: Sometime this command will output like this: `hello.py.launch': No such file or directory this is normal behaviour Show Sample Output
This is sample output - yours may be different.
```
/usr/bin/hello
/usr/lib/tk8.5/demos/hello
```
-1

find $(locate hello) -type f -executable -print|grep -E "hello\$"

unixmonkey14859 · 2012-08-18 07:51:53 5
Battery Health
This is sample output - yours may be different.
-1

upower -i /org/freedesktop/UPower/devices/battery_BAT0

newnumber · 2017-06-20 11:50:59 35
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
Read just the IP address of a device

to clean up the extra lines Show Sample Output
This is sample output - yours may be different.
```
127.0.0.1
192.168.1.127
```
-1

/sbin/ifconfig | grep inet | cut -f 2 -d ":" | cut -f 1 -d " " |egrep -v "^$"

giray · 2009-07-22 07:27:54 3
ping scan for a network and says who is alive or not
This is sample output - yours may be different.
-1

for i in `seq 254`;do ping -c 1 192.168.10.$i > /dev/null && echo "$i is up"||echo "$i is down";done

hackuracy · 2011-08-26 11:09:43 3
Get windows IPv4 and nothing else
This is sample output - yours may be different.
-1

cls && ipconfig | findstr -R "[ IPv4 | adapter ]"

sameer666 · 2013-12-03 13:29:30 5
make a zip file containing all files with the openmeta tag "data"

finding all files with the metadata tag "data" using the metadata find command mdfind , writing the list to a temporary file, reading the input for the .zip file from this temporary file.
This is sample output - yours may be different.
-1

mdfind "tag:data" > /tmp/data.txt ; zip -r9@ ~/Desktop/data.zip < /tmp/data.txt

vranx · 2009-02-24 14:49:50 6
Check if variable is a number
This is sample output - yours may be different.
-1

echo $X | egrep "^[0-9]+$"

sharfah · 2009-10-09 13:59:47 6
Indent all the files in a project using indent

This version uses the indent C formatting utility. Doesn't appear to be included with ubuntu. But CentOS and MacOS have it.
This is sample output - yours may be different.
-1

find . -iname \*.[ch] -exec indent "{}" \;

putnamhill · 2010-09-10 13:25:10 4
Function that swaps the filenames of two given files.

(Changed to "bartonskis" suggestion.)
This is sample output - yours may be different.
-1

flipf(){ if [ -f "$1" -a -f "$2" ]; then mv "$1" "$1.$$" && mv "$2" "$1" && mv "$1.$$" "$2" || echo "$!"; else echo "Missing a file: $!"; fi; }

Void42 · 2010-12-16 10:38:28 7
Replace Space In Filenames With Underscore

@ http://sgowtham.net/blog/2007/10/18/bash-replace-space-in-filenames-with-underscore/
This is sample output - yours may be different.
-1

for file in "* *"; do mv "${file}" "${file// /_}"; done

evandrix · 2012-04-25 00:02:35 7
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Backup sda5 partition to ftp ( using pipes and gziped backup )

Start a HTTP server which serves Python docs

I use this command to start a local Python document server over HTTP port 8888.

exec chmod to subfiles

Using `-exec cmd {} +` causes find to build the command using all matching filenames before execution, rather than once per file.

Show max lengths of all fields in a pipe delimited file with header row

connect via ssh using mac address

Connect to a machine running ssh using mac address by using the "arp" command

Remove Suspend option from XFCE logoff dialog

Create a video screencast of any x11 window, with audio

The script gets the dimensions and position of a window and calls ffmpeg to record audio and video of that window. It saves it to a file named output.mkv

Find usb device in realtime

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

Maximum PNG compression with optipng, advpng, and advdef

optipng and advancecomp (for the the advpng and advdef tools) are the best FOSS tools for losslessly compressing PNGs. With the above tool chain, you can cut off as much as 20% off a PNG's file size.

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

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