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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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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

List Threads by Pid along with Thread Start Time

This command will list all threads started by a particular pid along with the start time of each thread. This is very valuable when diagnosing thread leaks.

Two command output

Summarize established connections after netstat output. Using tee and /dev/stderr you can send one command output to terminal before executing wc so you can summarize at the bottom of the output.

split source code to page with numbers

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

Skip banner on ssh login prompt

This allows you to skip the banner (usually /etc/issue.net) on ssh connections. Useful to avoid banners outputted to your mail by rsync cronjobs.

Kill all processes belonging to a user

This is a 'killall' command equivalent where it is not available. Prior to executing it, set the environment variable USERNAME to the username, whose processes you want to kill or replace the username with the $USERNAME on the command above. Side effect: If any processes from other users, are running with a parameter of $USERNAME, they will be killed as well (assuming you are running this as root user) [-9] in square brackets at the end of the command is optional and strongly suggested to be your last resort. I do not like to use it as the killed process leaves a lot of mess behind.

Find the processes that are on the runqueue. Processes with a status of

Want to know why your load average is so high? Run this command to see what processes are on the run queue. Runnable processes have a status of "R", and commands waiting on I/O have a status of "D". On some older versions of Linux may require -emo instead of -eo. On Solaris: ps -aefL -o s -o user -o comm | egrep "^O|^R|COMMAND"

Get the next weekday for an 'at' command

Line can be modified as needed. This considers weekdays to be Mon-Fri. If run any working day it'll provide a parameters for the next working day for "at". "beep" provided as a sample command. This can be modified easily to include wait time. If you need something to run "D" days after today: # D=4;if [ $(date +%u --date="${D} days") -lt 5 ];then AT="+${D} days";else AT="next monday";fi; echo "beep" | at noon ${AT}

Find usb device in realtime

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

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