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Say no to overwriting if cp -i is the default alias.

If the problem is an aliased synonym for a command, you can still execute the original command by pre-pending it with a reverse-slash '\'. This works at least in Bash, but I guess the aliasing system refers definitely to Bash (and not only).
This is sample output - yours may be different.
0

\cp something toSomeWhereElse

xakon · 2010-09-25 03:07:04 9
Kill all Zombie processes if they accept it!

just a leaner, smaller version. Love the original idea!
This is sample output - yours may be different.
0

kill -9 `ps xawo state=,pid=|sed -n 's/Z //p'`

AskApache · 2010-10-27 07:38:07 3
# Multiline unique paragraph sort; with case insensitive option (-i)

Sorts blank line delimited paragraphs. '-i' -- case insensitivity option -- removes redundant paragraphs in a case insensitive way, and then sorts in a case insensitive way. If you search CommandLineFu with multiple anded terms searches, redundancy can ensue. This sorts the retrieved text (among other kinds of data), and removes the redundancy. Show Sample Output
This is sample output - yours may be different.
```
# Backup all MySQL Databases to individual files
for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done

# backup local MySQL database into a folder and removes older then 5 days backups
mysqldump -uUSERNAME -pPASSWORD database | gzip > /path/to/db/files/db-backup-`date +%Y-%m-%d`.sql.gz ;find /path/to/db/files/* -mtime +5 -exec rm {} \;

# geoip information
curl -s "http://www.geody.com/geoip.php?ip=$(curl -s icanhazip.com)" | sed '/^IP:/!d;s/<[^>][^>]*>//g'

# List files contained within a zip archive
unzip -l <filename>
```
0

gawk 'BEGIN {RS="\n\n"; if (ARGV[1]=="-i")IGNORECASE=1;ARGC=1}{if (IGNORECASE)Text[tolower($0)]=$0;else Text[$0]=$0 };END {N=asort(Text);for(i=1;i<=N;i++)printf "%s\n\n",Text[i]}' -i<Test.txt

IF_Rock · 2011-05-11 01:03:30 3
A list of IPs (only) that are online in a specific subnet.

Often you want to nmap a list of IPs using the -iL flag. This is an easy way to generate a list of IPs that are online in a specific subnet or IP range (192.168.1.100-110). Show Sample Output
This is sample output - yours may be different.
```
192.168.1.1
192.168.1.43
192.168.1.67
192.168.1.100
192.168.1.101
192.168.1.104
```
0

nmap -sP 192.168.1.0/24 | awk "/^Host/"'{ print $3 }' |nawk -F'[()]' '{print $2}'

cantormath · 2011-12-31 15:50:22 3
Append the line # -*- coding: utf-8 -*- to a file

Useful when specifying char encoding for Python and/or your editor
This is sample output - yours may be different.
0

sed -i -e '1i \# -*- coding: utf-8 -*-' yourfile.py

igniteflow · 2012-05-15 14:54:06 3
Get the IP address
This is sample output - yours may be different.
0

ip a s eth0 | awk '/inet / {print $2} | sed -e 's/\/..//g'

ilovespam · 2012-07-18 02:43:15 3
Play a random avi file in the current directory tree
This is sample output - yours may be different.
0

mplayer $(find . -iname '*.avi' | shuf -n1)

fooacad · 2012-11-13 09:00:12 4
Print first pages from all files from a directory

Very usefull script to use when uoy must print all files from a directory. Show Sample Output
This is sample output - yours may be different.
```
request id is hp-27 (129 file(s))
```
0

lp -dhp -P1-1 -o media=a4 *

alphabraga · 2013-07-26 00:09:56 6
strips ogg audio from webm video ( no reencoding )

Strips the audio track from a webm video. Use this in combination with clive or youtube-dl.
This is sample output - yours may be different.
0

for file in "$@"; do name=$(basename "$file" .webm) echo ffmpeg -i $file -vn -c:a copy $name.ogg ffmpeg -i "$file" -vn -c:a copy "$name.ogg" done

hoodie · 2013-10-05 14:49:07 9
Force Git to overwrite local files after fetch

git fetch --all git reset --hard origin/staging
This is sample output - yours may be different.
0

git reset --hard origin/master

nomikos · 2014-11-06 01:59:04 8
Recursively find files over a certain size and list in descending size order
This is sample output - yours may be different.
0

find . -size +10M -type f -print0 | xargs -0 ls -Sshl1

bradym · 2015-02-26 20:23:26 8
Rotate images and adjust timestamps by +1 hour

works for Powershot SD780 IS
This is sample output - yours may be different.
0

jhead -autorot -ta+1 *

yoyoyojomo · 2015-06-26 05:11:30 10
Get video information with ffmpeg

ffprobe doesn't throw an error and was actually made to do exactly that. Usually ffprobe is located in the same folder as ffmpeg. https://ffmpeg.org/ffprobe.html#Description
This is sample output - yours may be different.
0

ffprobe -i filename.flv

Yamy · 2016-10-15 20:26:34 17
hardcode dnsserver, no more rewriting of etc/resolv.conf

man NetworkManager.conf ... none: NetworkManager will not modify resolv.conf. This implies rc-manager unmanaged Show Sample Output
This is sample output - yours may be different.
```
[main]
dns=none
#plugins=ifcfg-rh,ibft
```
0

f="/etc/NetworkManager/NetworkManager.conf"; if ! grep ^dns $f > /dev/null; then sudo sed -i.bkp '/\[main\]/a dns=none' $f; fi

ksvnix · 2018-05-15 18:17:49 193
download and install the software package in one step
This is sample output - yours may be different.
0

rpm -ivh 'http://www.website.com/path/to/desired_software_package.rpm'

userevolution · 2009-08-17 05:08:58 7
See if your mac can run 64-bit && if it the kernel is loaded 64-bit
This is sample output - yours may be different.
0

ioreg -l -p IODeviceTree | grep -o EFI[0-9]. && system_profiler SPSoftwareDataType |grep 64

commandlinefu · 2009-09-03 19:58:44 3
Show which include directories your installation of Perl is using.

This will show where your Perl installation is looking for modules.
This is sample output - yours may be different.
0

perl -le 'print join $/, @INC'

chuckr · 2009-09-22 22:18:35 6
Do you really believe on Battery Remaining Time? Confirm it from time to time!

Fully recharge your computer battery and start this script. It will create or clean the file named battery.txt, print a start on it and every minute it will append a time stamp to it. Batteries last few hours, and each hour will have 60 lines of time stamping. Really good for assuring the system was tested in real life with no surprises. The last time stamp inside the battery.txt file is of interest. It is the time the computer went off, as the battery was dead! Turn on your computer after that, on AC power of course, and open battery.txt. Read the first and last time stamps and now you really know if you can trust your computer sensors. If you want a simple line of text inside the battery.txt file, use this: watch -n 60 'date > battery.txt' The time of death will be printed inside Show Sample Output
This is sample output - yours may be different.
```
I made a 10s interval to printout quicky this output. For pratical purposes and less file size, 60s interval sounds enought. Here's the contents of battery.txt:

start  
Dom Out 18 03:36:33 BRST 2009
Dom Out 18 03:36:43 BRST 2009
Dom Out 18 03:36:53 BRST 2009
Dom Out 18 03:37:03 BRST 2009
Dom Out 18 03:37:13 BRST 2009
Dom Out 18 03:37:23 BRST 2009
Dom Out 18 03:37:33 BRST 2009
Dom Out 18 03:37:43 BRST 2009
Dom Out 18 03:37:53 BRST 2009
Dom Out 18 03:38:03 BRST 2009
Dom Out 18 03:38:13 BRST 2009
Dom Out 18 03:38:23 BRST 2009
Dom Out 18 03:38:33 BRST 2009
Dom Out 18 03:38:44 BRST 2009
Dom Out 18 03:38:54 BRST 2009
Dom Out 18 03:39:04 BRST 2009

# the last time stamp inside the battery.txt file is of interest. It is the time the computer went off, as the battery was dead! 
```
0

echo start > battery.txt; watch -n 60 'date >> battery.txt'

m33600 · 2009-10-18 07:00:26 4
Set status in pidgin
This is sample output - yours may be different.
0

purple-remote "setstatus?status=Available&message=Checking libpurple"

spsneo · 2010-01-17 23:48:17 4
Get URLs matching some xmms2 search
This is sample output - yours may be different.
0

xmms2 info $(xmms2 mlib search '<query>' | sed -ne 's/^00*$[1-9][0-9]*$.*$/\1/p') | awk -F' = ' '$1~/ url$/{print$2}'

mwgamera · 2010-02-15 10:24:15 3
Kill process by searching something from 'ps' command

Using -f treats the process name as a pattern so you don't have to include the full path in the command. Thus 'pkill -f firefox' works, even with iceweasel.
This is sample output - yours may be different.
0

pkill -f <process name>

eikenberry · 2010-06-19 02:36:31 3
Change directory by inode

First use ls -i to list files and directories with their inode number Then if you want to change to one of the directories, replace inode_no with its inode then execute the command Show Sample Output
This is sample output - yours may be different.
```
 
```
0

cd $(find -inum inode_no)

emacs · 2010-09-25 06:04:32 6
Append a new line "FOOBAR" in all files matching the glob*
This is sample output - yours may be different.
0

sed -i '$a\FOOBAR' *

sputnick · 2011-11-19 03:45:36 3
pdfcount: get number of pages in a PDF file
This is sample output - yours may be different.
0

pdftk file.pdf dump_data output | grep -i Num

evandrix · 2012-03-27 22:48:40 4
Get the IP address
This is sample output - yours may be different.
0

ip a s eth0 | awk -F"[/ ]+" '/inet / {print $3}'

ilovespam · 2012-07-18 02:47:12 3
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Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Command line progress bar

This command tar?s up a directory and sends the output to gzip, showing a rate of 223MB/s. This may require you installing the pv command. For debian based users out there: $ sudo aptitude install pv

Selecting a random file/folder of a folder

Also looks in subfolders

Convert a script to one-liner

Opposite: Convert an one-liner to script: $ foo() { ; } ... $ typeset -f foo ... $ unset -f foo

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Jump up to any directory above the current one

Usage: upto directory

send tweets to twitter (and get user details)

great for outputting tweets from cron jobs and batch scripts

quickly formats a fat partition. usefull for flash drives

Google Translate

$translate works from command line

UPS Tracking Script

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