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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 13:31:03 335
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
‹ First < 486 487 488 489 490 > Last ›

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Display IP : Count of failed login attempts

The lastb command presents you with the history of failed login attempts (stored in /var/log/btmp). The reference file is read/write by root only by default. This can be quite an exhaustive list with lots of bots hammering away at your machine. Sometimes it is more important to see the scale of things, or in this case the volume of failed logins tied to each source IP. The awk statement determines if the 3rd element is an IP address, and if so increments the running count of failed login attempts associated with it. When done it prints the IP and count. The sort statement sorts numerically (-n) by column 3 (-k 3), so you can see the most aggressive sources of login attempts. Note that the ':' character is the 2nd column, and that the -n and -k can be combined to -nk. Please be aware that the btmp file will contain every instance of a failed login unless explicitly rolled over. It should be safe to delete/archive this file after you've processed it.

Replace space in filename

This commands removes space from all the files with specific extension. I've specifed *.jpg as an example.

Create an SSH connection (reverse tunnel) through your firewall.

Allows you to establish a tunnel (encapsulate packets) to your (Server B) remote server IP from your local host (Server A). On Server B you can then connect to port 2001 which will forward all packets (encapsulated) to port 22 on Server A. -- www.fir3net.com --

Advanced python tracing

Trace python statement execution and syscalls invoked during that simultaneously

list block devices

Shows all block devices in a tree with descruptions of what they are.

Get the header of a website

Search shoutcast web radio by keyword

Searches for web radio by submitted keyword and returns the station name and the link for listing . May be enhanced to read user's selection and submit it to mplayer.

backup your playstation game using rip

Convert ascii string to hex

cat ~/.ssh/id_rsa.pub | ssh user@site.com "cat - >> ~/.ssh/authorized_keys"

You'll want to use this for passwordless logins. Same as ssh-copy-id, if you don't have it on your system.

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