Commands using sed sorted by votes

Commands using sed (1,319)

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count occurences of each word in novel David Copperfield

This command might not be useful for most of us, I just wanted to share it to show power of command line. Download simple text version of novel David Copperfield from Poject Gutenberg and then generate a single column of words after which occurences of each word is counted by sort | uniq -c combination. This command removes numbers and single characters from count. I'm sure you can write a shorter version. Show Sample Output
This is sample output - yours may be different.
```
aback	1
abandon	6
abandoned	13
abase	1
abased	1
abashed	7
abated	1
abatement	1
...
```
-4

wget -q -O- http://www.gutenberg.org/dirs/etext96/cprfd10.txt | sed '1,419d' | tr "\n" " " | tr " " "\n" | perl -lpe 's/\W//g;$_=lc($_)' | grep "^[a-z]" | awk 'length > 1' | sort | uniq -c | awk '{print $2"\t"$1}'

alperyilmaz · 2009-05-04 16:00:39 11
Search and replace in multiple files and save them with the same names - quickly and effectively!

Yeah, there are many ways to do that. Doing with sed by using a for loop is my favourite, because these are two basic things in all *nix environments. Sed by default does not allow to save the output in the same files so we'll use mv to do that in batch along with the sed. Show Sample Output
This is sample output - yours may be different.
```
No standard output on screen... just hit and boom. So, by the rule of the thumb first create a backup and then execute  or try to execute on some dummy files first.
```
-4

for files in $(ls -A directory_name); do sed 's/search/replaced/g' $files > $files.new && mv $files.new $files; done;

bassu · 2009-05-07 20:13:07 48
Remove blank lines from a file and save output to new file
This is sample output - yours may be different.
-4

sed '/^$/d' file >newfile

haplo · 2009-09-24 19:22:49 5
Create a list of sequential logins

This command generates a sequential login list. Good to be used as a source of new logins.
This is sample output - yours may be different.
-4

seq -w 100 | sed 's/^/login/'

lawrence · 2009-10-15 13:56:56 10
Get your external IP address
This is sample output - yours may be different.
-4

wget -q -O - checkip.dyndns.org|sed -e 's/.*Current IP Address: //' -e 's/<.*$//'

sanjaygoel · 2009-11-06 10:18:26 3
convert permissions in ls to octal
This is sample output - yours may be different.
-4

ls -l | sed -e 's/--x/1/g' -e 's/-w-/2/g' -e 's/-wx/3/g' -e 's/r--/4/g' -e 's/r-x/5/g' -e 's/rw-/6/g' -e 's/rwx/7/g' -e 's/---/0/g'

luishka · 2010-01-31 22:41:02 16
Geo Weather

Weather based on your location
This is sample output - yours may be different.
-4

curl -s http://www.google.com/ig/api?weather=$(curl -s "http://api.hostip.info/get_html.php?ip=$(curl -s icanhazip.com)" | grep City | sed 's/City: $.*$/\1/' | sed 's/ /%20/g' | sed "s/'/%27/g") | sed 's|.*<temp_f data="$[^"]*$"/>.*|\1\n|'

matthewbauer · 2010-02-13 21:42:48 11
Shows users and 'virtual users' on your a unix-type system

Most systems (at least my macbook) have system users defined, such as _www and using "users" for example will not list them. This command allows you to see who the 'virtual' users are on your system. Show Sample Output
This is sample output - yours may be different.
```
USER
_mdnsresponder
_mysql
_postfix
_spotlight
_usbmuxd
_windowserver
_www
couchdb
daemon
lloyd
root
```
-4

sudo lsof|sed 's/ */ /g'|cut -f3 -d' '|sort -u

binaryten · 2010-07-07 08:20:28 7
geoip information

Shows you the geolocation of an IP address. Show Sample Output
This is sample output - yours may be different.
```
user@foo $> geoip 208.67.222.222
      Host Name: resolver1.opendns.com
     IP Address: 208.67.222.222
        Country: [14]United States united states
   Country code: US (USA)
         Region: [15]California
           City: San Francisco
    Postal code: 94105
```
-4

geoip() { lynx -dump "http://www.geoiptool.com/en/?IP=$1" | sed -n '/Host Name/,/Postal code/p' ; }

vando · 2011-02-04 14:12:02 13
commit message generator - whatthecommit.com

Fetch comical VC commit messages from whatthecommit.com
This is sample output - yours may be different.
-4

lynx -dump -nolist http://whatthecommit.com/|sed -n 2p

houghi · 2011-04-17 17:45:18 5
Returns the absolute path to a command, using which if needed

It will return the absolute location of the called a script. If is in $PATH, it will search it using which. You can combine this function with this other one: http://www.commandlinefu.com/commands/view/9252/readlink-equivalent-using-shell-commands-and-following-all-links, to get a way to know where is the real location of a called script: # Returns the realpath of a called command. whereis_realpath() { local SCRIPT_PATH=$(whereis $1); myreadlink ${SCRIPT_PATH} | sed "s|^$[^/].*$\$|$(dirname ${SCRIPT_PATH})/\1|"; } Show Sample Output
This is sample output - yours may be different.
```
$ get_absolute_path ls
/bin/ls
$ cd /bin
$ get_absolute_path ./ls
/bin/ls
```
-4

get_absolute_path() { echo $1 | sed "s|^$[^/].*/.*$|$(pwd)/\1|;s|^$[^/]*$$|$(which -- $1)|;s|^$|$1|"; }

keymon · 2011-09-13 11:06:55 6
Show the single most recently modified file in a directory

Takes a directory name as an argument (defaults to current directory if no arguments are given). Prints the newest file in the directory. Show Sample Output
This is sample output - yours may be different.
```
$ ls -lart /tmp | tail -3
-rw-rw-rw-  1 bchittenden bchittenden    25919 Oct 17 10:37 image.txt
drwx------  2 bchittenden bchittenden     4096 Oct 17 11:30 orbit-bchittenden
drwxrwxrwt 22 root        root           12288 Oct 17 11:30 .

$ lastfile /tmp
/tmp/image.txt
```
-4

lastfile () { find ${1:-.} -maxdepth 1 -type f -printf "%T+ %p\n" | sort -n | tail -n1 | sed 's/[^[:space:]]\+ //'; }

bartonski · 2011-10-17 16:08:02 3
Get rid of multiple spaces/tabs in a text file

This command does the following: - converts any sequence of multiple spaces/tabs to one space only - completely removes any space(s)/tab(s) at the end of each line (If spaces and tabs are mixed in a sequence i.e. [tab][tab][space][tab], you have to execute this command twice!) Show Sample Output
This is sample output - yours may be different.
```
$ cat brisati.txt
[       ]<--one tab
[                       ]<--three tabs                    
[ ]<--one space
[   ]<--three spaces
$ sed -i "s/$\x09\{1,\}$\|$ \{1,\}$/ /g;s/$\x09\{1,\}$$\|$ \{1,\}$$//g" brisati.txt;cat brisati.txt
[ ]<--one tab
[ ]<--three tabs
[ ]<--one space
[ ]<--three spaces
```
-4

sed -i "s/$\x09\{1,\}$\|$ \{1,\}$/ /g;s/$\x09\{1,\}$$\|$ \{1,\}$$//g" brisati.txt

knoppix5 · 2011-12-12 10:24:03 6
multichar tr string1 '\n'

alternative to tr char '\012' works with sed's that don't accept "\n" allows for multi-char sentinals, while tr(1) only operates on single chars
This is sample output - yours may be different.
-4

case $# in 0) echo usage: $0 pattern ;; *)case $1 in */*)sed ' s,'"$1"',\ ,g';; *) sed ' s/'"$1"'/\ /g' ;;esac;esac;

argv · 2011-12-30 23:54:12 3
empty set of files

Show Sample Output
This is sample output - yours may be different.
```
# cat *.php|wc -l
404
# sed -i -n '/%/p' *.php
# cat *.php|wc -l
0
```
-4

sed -i -n '/%/p' *.php

knoppix5 · 2013-03-01 12:52:49 5
Print file content in reverse order
This is sample output - yours may be different.
-4

sed -n '1!G;h;$p' techie.txt

techie · 2013-05-09 08:22:36 6
show directory three

show directory three
This is sample output - yours may be different.
-4

find . -type d | sed -e "s/[^-][^\/]*\// |/g" -e "s/|$[^ ]$/|-\1/"

opexxx · 2013-07-16 10:08:34 7
netstat -p recoded (totaly useless..)

Ok so it's rellay useless line and I sorry for that, furthermore that's nothing optimized at all... At the beginning I didn't managed by using netstat -p to print out which process was handling that open port 4444, I realize at the end I was not root and security restrictions applied ;p It's nevertheless a (good ?) way to see how ps(tree) works, as it acts exactly the same way by reading in /proc So for a specific port, this line returns the calling command line of every thread that handle the associated socket
This is sample output - yours may be different.
-5

p=$(netstat -nate 2>/dev/null | awk '/LISTEN/ {gsub (/.*:/, "", $4); if ($4 == "4444") {print $8}}'); for i in $(ls /proc/|grep "^[1-9]"); do [[ $(ls -l /proc/$i/fd/|grep socket|sed -e 's|.*\[$.*$\]|\1|'|grep $p) ]] && cat /proc/$i/cmdline && echo; done

j0rn · 2009-04-30 12:39:48 628
Get your external IP address

For those of us that still uses lynx :)
This is sample output - yours may be different.
-5

lynx --dump http://ip.boa.nu|sed -e 's/^[[:space:]]*//' -e 's/*[[:space:]]$//'|grep -v ^$

xeor · 2009-11-04 22:23:45 3
a find and replace within text-based files, for batch text replacement, not using perl
This is sample output - yours may be different.
-5

for file in `find . -iname "FILENAME"`; do cat $file | sed "s/SEARCH_STRING/REPLACE_STRING/" > $file.tmp; mv $file.tmp $file; done

unixmonkey6754 · 2010-02-24 13:46:29 3
show your private/local ip address

This assumes your local ip starts with 192.something (e.g. 192.168), it greps ifconfig output for an ip that starts with 192, then strips the extra garbage (besides the ip) Maybe `ifconfig | grep addr | grep Bcast` would also do it Show Sample Output
This is sample output - yours may be different.
```
192.168.1.104
```
-5

ifconfig | grep addr:192 | sed s/Bcast.*// | sed 's/^.*inet addr://'

hasenj · 2010-03-26 07:37:21 4
bat add copyright info
This is sample output - yours may be different.
-5

find . -name "*.c" -exec sed -i "/\/sh/a\####################################\n#Date:2010-05-18\n#Company:XXXXX tech Co.\n#Author:Wangjunling\n#Copyright:gpl\n####################################" {} \;

yogoloth · 2010-05-18 03:08:47 5
List files with quotes around each filename

Looks like you're stuck with sed if your ls doesn't have a -Q option.
This is sample output - yours may be different.
-5

ls | sed 's/.*/"&"/'

putnamhill · 2010-08-17 15:38:51 3
Selecting a random file/folder of a folder

Select a file/folder at random. Show Sample Output
This is sample output - yours may be different.
```
/tmp$ ls -1 | sort -R | sed -n 's/^/Selected /;1p'
Selected keyring-dn8fNC
```
-5

ls -1 | sort -R | sed -n 's/^/Selected /;1p'

flatcap · 2011-03-13 21:00:28 4
replace text in all files in folder, into subfolder

if you want to replace "foo" with "bar" in all files in a folder, and put the resulting files into a new subfolder
This is sample output - yours may be different.
-5

mkdir replaced;for i in *; do cat "$i"| sed 's/foo/bar/' > "replaced/$i"; done

rubo77 · 2011-08-30 08:28:26 5
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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.

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Search big files with long lines

This is a handy way to circumvent the "Maximum line length of 2048 exceeded" grep error. Once you have run the above command (or put it in your .bashrc), files can be searched using: $ lgrep search-string /file/to/search

An alarm clock using xmms2 and at

I like the order of the arguments better this way.

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

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

count IPv4 connections per IP

usefull in case of abuser/DoS attacks.

Find usb device in realtime

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

Tell Analytics to fuck itself.

See http://code.google.com/apis/analytics/docs/concepts/gaConceptsCookies.html if you are unclear about the Google Analytics cookie system. If Firefox is your daily browser, be a good Orwellian and run this command regularly. If you see, 'SQL error near line 1: database is locked', close Firefox and run again.

remove empty lines in place with backup

Modify file in place to remove empty lines and create a backup of the original with the extension .bak

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Commands using sed (1,319)

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