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unix2dos with awk
This is sample output - yours may be different.
0

awk 'sub("$", "\r")' unixfile.txt > winfile.txt

pedalinux · 2011-06-10 15:20:01 3
Clean a wordlist for use with password cracking tools and rules

Using large wordlists is cumbersome. Using password cracking programs with rules such as Hashcat or John the ripper is much more effective. In order to do this many times we need to "clean" a wordlist removing all numbers, special characters, spaces, whitespace and other garbage. This command will covert a entire wordlist to all lowercase with no garbage.
This is sample output - yours may be different.
0

cat dirtyfile.txt | awk '{gsub(/[[:punct:]]/,"")}1' | tr A-Z a-z | sed 's/[0-9]*//g' | sed -e 's/ //g' | strings | tr -cs '[:alpha:]' '\ ' | sed -e 's/ /\n/g' | tr A-Z a-z | sort -u > cleanfile.txt

purehate · 2011-08-28 01:26:04 10
Modify all files newer than another file and touch them to a specific date.

Modify all files newer than another file and touch them to a specific date. Show Sample Output
This is sample output - yours may be different.
```
None.  Check it with 'ls -al'
```
0

find . -newer /tmp/foo -exec touch --date "2011-12-12" {} \;

djangofan · 2011-12-15 04:55:57 3
find all c and cpp files except the ones in the unit-test and android subdirectories

Find files matching multiple descriptions (*.c and *.cpp) excluding multiple directories (unit-test and android).
This is sample output - yours may be different.
0

find . ! -regex '.*/$unit-test\|android$/.*' $ -name '*.c' -o -name '*.cpp' $

flatcap · 2012-04-26 17:53:45 3
Select columns in a file

Display the 1st field (employee name) from a colon delimited file Show Sample Output
This is sample output - yours may be different.
```
Emma Thomas
Alex Jason
Madison Randy
Sanjay Gupta
Nisha Singh
```
0

cut -d: -f 1 names.txt

ankush108 · 2012-06-26 19:28:25 3
Fill a hard drive with ones - like zero-fill, but the opposite :)
This is sample output - yours may be different.
0

perl -e '$s="$s\xFF" while length($s)<512; print $s while 1' | dd of=/dev/sdX

stonefoz · 2012-08-20 05:33:28 4
Runs previous command replacing foo by bar every time that foo appears

this also can !
This is sample output - yours may be different.
0

^bar^foo^

datamining · 2013-04-22 03:47:07 5
remove duplicate with change order
This is sample output - yours may be different.
0

perl -lne 'print unless $seen{$_}++'

kotokz · 2013-07-01 03:47:48 7
Temporarily suspend and unsuspend a foreground job

Like this you can continue a suspended job without blocking again your terminal
This is sample output - yours may be different.
0

^Z <...> % &

Dev_NIX · 2014-06-13 15:35:52 7
Git branches I checked-out on a specific date

Replace "Oct 2" in the first grep pattern to be the date to view branch work from Show Sample Output
This is sample output - yours may be different.
```
my_new_feature
my_second_new_feature
master
```
0

git reflog --date=local | grep "Oct 2 .* checkout: moving from .* to" | grep -o "[a-zA-Z0-9\-]*$" | sort | uniq

Trindaz · 2014-10-03 15:12:22 8
Fix Chromium browser not starting

If AppArmor is installed with all profiles enforced, Chromium may refuse to start, printing a "failed to launch zygote process" error on stderr. This command switches the Chromium profile from enforce to complain mode, effectively un-sandboxing the browser, but depending on the system setup it may be a smaller deal than a nonfunctional application. Show Sample Output
This is sample output - yours may be different.
```
Setting /etc/apparmor.d/usr.bin.chromium-browser to complain mode.
```
0

sudo aa-complain /etc/apparmor.d/usr.bin.chromium-browser

lordtoran · 2015-09-30 18:56:28 13
Random Wallpaper From Reddit
This is sample output - yours may be different.
0

wget -O - http://www.reddit.com/r/wallpaper | grep -Eo 'http://i.imgur.com[^&]+jpg' | shuf -n 1 | xargs wget -O background.jpg ; feh --bg-fill background.jpg

lowrez · 2015-12-22 19:11:02 21
sha256 checksum for Chef's remote_file resource
This is sample output - yours may be different.
0

curl -L -s https://some.file | shasum -a 256 | cut -c-12

Raboo · 2017-04-04 13:07:24 16
Replace string and ask for confirmation
This is sample output - yours may be different.
0

:%s/foo/bar/gc

tofu00 · 2017-11-29 10:10:27 20
search manpages on the internets

manview searches man pages on the internets in case the man command doesn't work for some reason or if you think the man pages in Cornell's flavor of Solaris might differ from yours. It dumps the manpage info from lynx to less, so it ends up looking remarkably like a real manpage. Put it in your .bash_profile or .bashrc, and then you can use it like a regular command: typing "manview ssh" will give you the manpage for ssh.
This is sample output - yours may be different.
0

manview() { lynx -dump -accept_all_cookies 'http://www.csuglab.cornell.edu/cgi-bin/adm/man.cgi?section=all&topic='"$1" | less; }

Ben · 2009-03-11 19:02:11 7
Prints line numbers
This is sample output - yours may be different.
0

awk '{print NR,$0}'

4Aiur · 2010-01-08 08:00:34 3
Display the space used for all your mounted logical volume (LV)
This is sample output - yours may be different.
0

df -kh /dev/vg0*/lv*

marousan · 2010-02-03 13:37:30 4
Open Remote Desktop (RDP) from command line having a custom screen size

The above command will: - open a Remote Desktop connection to [servername / IP Address], - authenticate using [username] and [password], - configure resolution to best fit your desktop (I have a 1366x768px resolution so I left space for 2 panels of 22px each), - sets the color depth for the connection to 16 bpp, - hides the window manager decorations, - enables compression of the RDP data stream, - enables persistent bitmap caching.
This is sample output - yours may be different.
0

rdesktop -u <username> -p <password> -g 1366x724 -a 16 -D -z -P <servername / IP Address>

mariusbutuc · 2010-06-09 11:47:35 3
How to Kill Process that is Running on Certain Port in Windows?

I cannot run Tomcat from Eclipse. It says that there?s other process that is running on port 8080, but I don?t know what is the process, and how to stop it from the Services manger in Windows. So here?s how you can kill and find out what is that process: To find out what PID 8080 was (hopefully not a trojan) I typed tasklist /FI ?PID eq 8080″ taskkill /F /PID 2600
This is sample output - yours may be different.
0

netstat -a -o -n | grep 8080

evandrix · 2011-04-28 09:58:59 3
Watch Weather Channel live video stream without a browser

Perfect for following Hurricane Irene
This is sample output - yours may be different.
0

vlc mms://twcilivewm.fplive.net/twcilive-live/twci_350

andresmh · 2011-08-28 02:24:53 3
Get the name or user running the process of specified PID

Gets the current system user running a process with the specified pid Show Sample Output
This is sample output - yours may be different.
```
nssy@yoda:~$ ps aux | grep 3698 | grep -v 'grep' | awk '{ print $1 }'
nssy
```
0

ps aux | grep PID | grep -v 'grep' | awk '{ print $1 }'

nssy · 2011-11-05 04:53:29 3
Stop iptables completely

If you changed the default policy on any chain other than filter table chain's, this won't be enough.
This is sample output - yours may be different.
0

iptables -P INPUT ACCEPT; iptables -P FORWARD ACCEPT; iptables -P OUTPUT ACCEPT; for table in `cat /proc/net/ip_tables_names`; do iptables -t $table -F; iptables -t $table -Z; iptables -t $table -X; done

dash · 2011-12-15 18:19:34 41
Squeeze repeats

Convert long list of ' ' to a single space. Compress space and other characters. Show Sample Output
This is sample output - yours may be different.
```
->xyz           wof
->xyz wof
```
0

tr -s ' '

ankush108 · 2012-06-26 19:34:18 8
Download all images from a 4chan thread

Couldn't make the other work so I made this
This is sample output - yours may be different.
0

curl -s http://boards.4chan.org/---/res/nnnnnn | grep -o -i 'File: <a href="//images.4chan.org\/[a-z]*\/src\/[0-9]*\.[a-z]\{3\}' | sed -r 's/File: <a href="\/\///' |xargs wget

MonsieurMachin · 2012-08-21 07:25:20 5
Easily find an old command you run

this also can find the old command you used before
This is sample output - yours may be different.
0

history | tail -100 | grep cmd

datamining · 2013-04-22 03:49:43 9
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Displays the current time using HTTP

This command will show the current GMT time using HTTP. This might be useful if you just want to know what's the current human-readable and accurate-enough time, without changing the system time, using a simple command that would work regardless of the availability of NTP. Note: To get a quicker and more accurate response, replace google.com with your local NTP server. Also can be used as an alternative to the "htpdate" program: http://www.commandlinefu.com/commands/view/668/set-your-computers-clock-using-http-and-htp-http-time-protocol-when-ntpsntp-is-not-available

Print the last modified file

Erase to factory a pendrive, disk or memory card, and watch the progress

Check the hard disk vendor and model on Apple Mac

Bash prompt with user name, host, history number, current dir and just a touch of color

I put that line in my .bash_profile (OS X) and .bashrc (Linux). Here is a summary of what the \char means: n=new line, u=user name, h=host, !=history number, w=current work directory The \[\e[32m\] sequence set the text to bright green and \[\e[0m\] returns to normal color. For more information on what you can set in your bash prompt, google 'bash prompt'

Broadcast your shell thru ports 5000, 5001, 5002 ...

run 'nc yourip 5000', 'nc yourip 5001' or 'nc yourip 5002' elsewhere will produce an exact same mirror of your shell. This is handy when you want to show someone else some amazing stuff in your shell without giving them control over it.

ls -qaltr # list directory in chronological order, most recent files at end of list

I find it very handy to be able to quickly see the most recently modified/created files in a directory. Note that the "q" option will reveal any files with non-printable characters in their filename.

draw line separator (using knoppix5 idea)

This is a slightly modified version of the knoppix5 user oneliner (https://www.commandlinefu.com/commands/view/24571/draw-line-separator).

HourGlass

Displays an animated hourglass for x amount of seconds

a function to find the fastest DNS server

http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

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