Commands using sed sorted by votes

Commands using sed (1,319)

sorted by

Get your commandlinefu points (upvotes - downvotes)

This will calculate the your commandlinefu votes (upvotes - downvotes). Hopefully this will boost my commandlinefu points. Show Sample Output
This is sample output - yours may be different.
```
37
```
9

username=matthewbauer; curl -s http://www.commandlinefu.com/commands/by/$username/json | tr '{' '\n' | grep -Eo ',"votes":"[0-9\-]+","' | grep -Eo '[0-9\-]+' | tr '\n' '+' | sed 's/+$/\n/' | bc

matthewbauer · 2010-02-14 04:32:36 11
Convert a string to "Title Case"

Converts the first letter of each word to upper case Show Sample Output
This is sample output - yours may be different.
```
$ echo "this is a test" | sed 's/.*/\L&/; s/[a-z]*/\u&/g'
This Is A Test
$
```
9

echo "this is a test" | sed 's/.*/\L&/; s/[a-z]*/\u&/g'

SuperFly · 2011-01-06 13:09:49 12
Join lines split with backslash at the end

Joins each line that end with backslash (common way to mark line continuation in many languages) with the following one while removing the backslash. Show Sample Output
This is sample output - yours may be different.
```
$ sed -e '/\\$/{:0;N;s/\\\n//;t0}' <<END
> Hello \\
> world!
> END
Hello world!
$ echo 'scale=70; 127/131' | bc | sed -e '/\\$/{:0;N;s/\\\n//;t0}'
.9694656488549618320610687022900763358778625954198473282442748091603053
```
9

sed -e '/\\$/{:0;N;s/\\\n//;t0}'

mwgamera · 2011-10-09 14:35:23 10
Search google.com on your terminal

I found this command on a different site and thought you guy might enjoy it. Just change "YOURSEARCH" to what ever you want to search. Example, "Linux Commands"
This is sample output - yours may be different.
9

Q="YOURSEARCH"; GOOG_URL="http://www.google.com/search?q="; AGENT="Mozilla/4.0"; stream=$(curl -A "$AGENT" -skLm 10 "${GOOG_URL}\"${Q/\ /+}\"" | grep -oP '\/url\?q=.+?&amp' | sed 's/\/url?q=//;s/&amp//'); echo -e "${stream//\%/\x}"

techie · 2013-04-03 09:56:41 12
Export MySQL query as .csv file

This command converts a MySQL query directly into a .csv (Comma Seperated Value)-file. Show Sample Output
This is sample output - yours may be different.
```
no output
```
8

echo "SELECT * FROM table; " | mysql -u root -p${MYSQLROOTPW} databasename | sed 's/\t/","/g;s/^/"/;s/$/"/;s/\n//g' > outfile.csv

jacquesloonen · 2009-02-16 18:55:18 10
Mount a partition from within a complete disk dump

Suppose you made a backup of your hard disk with dd: dd if=/dev/sda of=/mnt/disk/backup.img This command enables you to mount a partition from inside this image, so you can access your files directly. Substitute PARTITION=1 with the number of the partition you want to mount (returned from sfdisk -d yourfile.img). Show Sample Output
This is sample output - yours may be different.
```
alanceil@kvirasim:22:20:1:~> /sbin/sfdisk -d disk.img
# partition table of disk.img
unit: sectors
disk.img1 : start=       63, size=   128457, Id=83
disk.img2 : start=        0, size=        0, Id= 0
disk.img3 : start=        0, size=        0, Id= 0
disk.img4 : start=        0, size=        0, Id= 0
root@kvirasim:22:20:0:~> INFILE=/home/alanceil/disk.img; MOUNTPT=/mnt/gen; PARTITION=1; mount "$INFILE" "$MOUNTPT" -o loop,offset=$[ `/sbin/sfdisk -d "$INFILE" | grep "start=" | head -n $PARTITION | tail -n1 | sed 's/.*start=[ ]*//' | sed 's/,.*//'` * 512 ]
root@kvirasim:22:22:0:~> mount | grep gen
/dev/loop0 on /mnt/gen type ext2 (rw,offset=32256)
```
8

INFILE=/path/to/your/backup.img; MOUNTPT=/mnt/foo; PARTITION=1; mount "$INFILE" "$MOUNTPT" -o loop,offset=$[ `/sbin/sfdisk -d "$INFILE" | grep "start=" | head -n $PARTITION | tail -n1 | sed 's/.*start=[ ]*//' | sed 's/,.*//'` * 512 ]

Alanceil · 2009-03-06 21:29:13 11
Find brute force attempts on SSHd

Searches the /var/log/secure log file for Failed and/or invalid user log in attempts. Show Sample Output
This is sample output - yours may be different.
```
2 67.11.200.144
      4 210.40.128.31
      6 208.71.128.195
      6 64.39.0.38
     15 219.246.112.241
     20 200.214.15.142
     30 119.70.154.57
     30 79.38.22.92
     40 61.152.201.74
     87 88.191.94.168
    107 200.27.214.30
    107 61.134.27.234
    115 200.6.208.186
    170 222.73.37.25
    387 99.154.226.153
    548 222.35.78.224
    627 94.75.240.141
    946 213.191.111.5
```
8

cat /var/log/secure | grep sshd | grep Failed | sed 's/invalid//' | sed 's/user//' | awk '{print $11}' | sort | uniq -c | sort -n

empulse · 2009-03-30 15:48:24 18
put all lines in comment where de word DEBUG is found
This is sample output - yours may be different.
8

sed -i 's/^.*DEBUG.*/#&/' $file

svg · 2009-07-30 09:20:37 77
sed : using colons as separators instead of forward slashes

Having to escape forwardslashes when using sed can be a pain. However, it's possible to instead of using / as the separator to use : . I found this by trying to substitute $PWD into my pattern, like so sed "s/~.*/$PWD/" file.txt Of course, $PWD will expand to a character string that begins with a / , which will make sed spit out an error such as "sed: -e expression #1, char 8: unknown option to `s'". So simply changing it to sed "s:~.*:$PWD:" file.txt did the trick. Show Sample Output
This is sample output - yours may be different.
```
$ cat dir_name.txt
/home/johnson/music

$ sed "s:/home/johnson/:/net/backup/:" dir_name.txt
/net/backup/music
```
8

sed "s:/old/direcory/:/new/directory/:" <file>

thebillywayne · 2009-08-06 00:37:45 6
connect via ssh using mac address

Connect to a machine running ssh using mac address by using the "arp" command Show Sample Output
This is sample output - yours may be different.
```
ssh: connect to host 192.168.1.103 port 22: No route to host
```
8

ssh root@`for ((i=100; i<=110; i++));do arp -a 192.168.1.$i; done | grep 00:35:cf:56:b2:2g | awk '{print $2}' | sed -e 's/(//' -e 's/)//'`

gean01 · 2009-09-09 04:32:20 15
randomize hostname and mac address, force dhcp renew. (for anonymous networking)

this string of commands will release your dhcp address, change your mac address, generate a new random hostname and then get a new dhcp lease.
This is sample output - yours may be different.
8

dhclient -r && rm -f /var/lib/dhcp3/dhclient* && sed "s=$(hostname)=REPLACEME=g" -i /etc/hosts && hostname "$(echo $RANDOM | md5sum | cut -c 1-7 | tr a-z A-Z)" && sed "s=REPLACEME=$(hostname)=g" -i /etc/hosts && macchanger -e eth0 && dhclient

grokskookum · 2009-09-28 22:07:31 7
Extract a bash function

I often need to extract a function from a bash script and this command will do it. Show Sample Output
This is sample output - yours may be different.
```
$ sed -n '/^function h/,/^}/p' .bash_profile
function h() {
    if [ -z "$1" ]
    then
        history
    else
        history | grep "$@"
    fi
}
```
8

sed -n '/^function h/,/^}/p' script.sh

haivu · 2009-10-19 07:55:35 33
show ls colors with demo

This can show all ls colors, with a demo.
This is sample output - yours may be different.
8

echo $LS_COLORS | sed 's/:/\n/g' | awk -F= '!/^$/{printf("%s \x1b[%smdemo\x1b[0m\n",$0,$2)}'

bones7456 · 2009-12-15 01:17:46 7
Google Translate

allow multiword translations Show Sample Output
This is sample output - yours may be different.
```
$ translate en de I am looking for a table
```
8

translate() { lng1="$1";lng2="$2";shift;shift; wget -qO- "http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&q=${@// /+}&langpair=$lng1|$lng2" | sed 's/.*"translatedText":"$[^"]*$".*}/\1\n/'; }

bandie91 · 2010-05-02 22:15:30 36
Remove all HTML tags from a file
This is sample output - yours may be different.
8

sed "s/<[^>]\+>//g" file

sraeder · 2011-02-13 01:24:59 11
delete a particular line by line number in file

deletes line 3 in known_hosts text file
This is sample output - yours may be different.
8

sed -i 3d ~/.ssh/known_hosts

evandrix · 2011-05-26 11:34:03 6
Print all lines between two line numbers

Print all lines between two line numbers This command uses sed(1) to print all lines between two known line numbers in a file. Useful for seeing output in a log file, where the line numbers are known. The above command will print all lines between, and including, lines 3 and 6. Show Sample Output
This is sample output - yours may be different.
```
$ seq 10 | sed -n '3,6p'
3
4
5
6
```
8

sed -n '3,6p' /path/to/file

flatcap · 2011-12-14 15:09:38 8
Keep a copy of the raw Youtube FLV,MP4,etc stored in /tmp/

Certain Flash video players (e.g. Youtube) write their video streams to disk in /tmp/ , but the files are unlinked. i.e. the player creates the file and then immediately deletes the filename (unlinking files in this way makes it hard to find them, and/or ensures their cleanup if the browser or plugin should crash etc.) But as long as the flash plugin's process runs, a file descriptor remains in its /proc/ hierarchy, from which we (and the player) still have access to the file. The method above worked nicely for me when I had 50 tabs open with Youtube videos and didn't want to have to re-download them all with some tool.
This is sample output - yours may be different.
8

lsof -n -P|grep FlashXX|awk '{ print "/proc/" $2 "/fd/" substr($4, 1, length($4)-1) }'|while read f;do newname=$(exiftool -FileModifyDate -FileType -t -d %Y%m%d%H%M%S $f|cut -f2|tr '\n' '.'|sed 's/\.$//');echo "$f -> $newname";cp $f ~/Vids/$newname;done

mhs · 2012-02-25 01:49:45 5
Remove ( color / special / escape / ANSI ) codes, from text, with sed

Remove ( color / special / escape / ANSI ) codes, from text, with sed Credit to the original folks who I've copied this command from. The diff here is: Theirs: [m|K] Theirs is supposed to remove \E[NUMBERS;NUMBERS[m OR K] This statement is incorrect in 2 ways. 1. The letters m and K are two of more than 20+ possible letters that can end these sequences. 2. Inside []'s , OR is already assumed, so they are also looking for sequences ending with | which is not correct. This : [a-zA-Z] This resolves the "OR" issue noted above, and takes care of all sequences, as they all end with a lower or upper cased letter. This ensures 100% of any escape code 'mess' is removed. Show Sample Output
This is sample output - yours may be different.
```
user@host:~$  echo aaa | grep --color=always a | sed "s,\x1B\[[0-9;]*[a-zA-Z],,g"
aaa

# Note:  The a's are colored by grep, then color is stripped by sed statement.
```
8

sed "s,\x1B\[[0-9;]*[a-zA-Z],,g"

Zhoul · 2013-03-18 14:49:30 19
create a nicely formatted example of a shell command and its output

Shell function which takes a bash command as its input, and displays the following formatted output: EXAMPLE: command OUTPUT: output from command Show Sample Output
This is sample output - yours may be different.
```
EXAMPLE:

    example ls -l

OUTPUT:

    EXAMPLE:
    
        ls -l
    
    OUTPUT:
    
        total 0
        -rw-rw-r-- 1 bartonc bartonc 0 Nov 10 13:58 a
        -rw-rw-r-- 1 bartonc bartonc 0 Nov 10 13:58 b
        -rw-rw-r-- 1 bartonc bartonc 0 Nov 10 13:58 c
```
8

example() { echo "EXAMPLE:"; echo; echo " $@"; echo; echo "OUTPUT:"; echo ; eval "$@" | sed 's/^/ /'; }

bartonski · 2019-11-10 19:08:23 126
Quick way to sum every numbers in a file written line by line

If you have a file full of numbers written line by line, you can sum every line to get the total. With a file like this: 3443535 9878977 67554 987798 232324 you will got: 14610188
This is sample output - yours may be different.
7

(sed 's/^/x+=/' [yourfile] ; echo x) | bc

michelem · 2009-02-06 08:25:43 14
top 10 commands used
This is sample output - yours may be different.
7

sed -e 's/ *$//' ~/.bash_history | sort | uniq -cd | sort -nr | head

erdnaxeli · 2009-02-07 11:10:06 15
find .txt files inside a directory and replace every occurrance of a word inside them via sed
This is sample output - yours may be different.
7

find . -name '*.txt' -exec sed -ir 's/this/that/g' {} \;

vranx · 2009-02-24 14:07:14 13
Random line from bash.org (funny IRC quotes)

bash.org is a collection of funny quotes from IRC. WARNING: some of the quotes contain "adult" jokes... may be embarrassing if your boss sees them... Thanks to Chen for the idea and initial version! This script downloads a page with random quotes, filters the html to retrieve just one liners quotes and outputs the first one. Just barely under the required 255 chars :) Improvment: You can replace the head -1 at the end by: awk 'length($0)>0 {printf( $0 "\n%%\n" )}' > bash_quotes.txt which will separate the quotes with a "%" and place it in the file. and then: strfile bash_quotes.txt which will make the file ready for the fortune command and then you can: fortune bash_quotes.txt which will give you a random quote from those in the downloaded file. I download a file periodically and then use the fortune in .bashrc so I see a funny quote every time I open a terminal. Show Sample Output
This is sample output - yours may be different.
```
<Lev> have you SEEN the people who wear the I LOVE LINUX T-shirts....that does more damage to the OS than a billion microsoft blue-screens
```
7

curl -s http://bash.org/?random1|grep -oE ".*.*"|grep -oE ""|sed -e 's/<\/p>/\n/g' -e 's///g' -e 's///g'|perl -ne 'use HTML::Entities;print decode_entities($_),"\n"'|head -1

Iftah · 2009-05-07 13:13:21 17
purge installed but unused linux headers, image, or modules

will purge: only installed apps: /^ii/!d avoiding current kernel stuff: /'"$(uname -r | sed "s/$.*$-$[^0-9]\+$/\1/")"'/d using app names: s/^[^ ]* [^ ]* $[^ ]*$.*/\1/ avoiding stuff without a version number: /[0-9]/!d
This is sample output - yours may be different.
7

dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/$.*$-$[^0-9]\+$/\1/")"'/d;s/^[^ ]* [^ ]* $[^ ]*$.*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge

plasticdoc · 2009-06-19 10:11:00 9
< 1 2 3 4 5 > Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Advanced python tracing

Trace python statement execution and syscalls invoked during that simultaneously

Counts number of lines (in source code excluding comments)

I took java to make the find command simpler and to state that it works for any language supported by cpp. cpp is the C/C++ preprocessor (interprets macros, removes comments, inserts includes, resolves trigraphs). The -fpreprocessor option tells cpp to assume the input has already been preprocessed so it will only replace comment lines with blank lines. The -L 1 option tells xargs to launch one process for each line, indeed cpp can only process one file at the time...

Install pip with Proxy

Installs pip packages defining a proxy

Copy the text from the 3rd line to the 9th line into a new file with VI

Find the package that installed a command

Watch the progress of 'dd'

Only slightly different than previous commands. The benefit is that your "watch" should die when the dd command has completed. (Of course this would depend on /proc being available)

Download SSL server certificate with opsnessl

Useful when we need to create new certificate for site when current one is near expiry. This downloaded cert can be used to provide organisational data directly to new cert. using below command. e.g. openssl x509 -x509toreq -in /tmp/example.com.cert -out example.com.csr -signkey example.com-key.pem

One line Perl Script to determine the largest file sizes on a Linux Server

This one line Perl script will display the smallest to the largest files sizes in all directories on a server.

Download Entire YouTube Channel - all of a user's videos

create the function then run 'yt-chanrip username' to download that user's entire channel. uses youtube-dl and the GData API. similar to http://www.commandlinefu.com/commands/view/3154/download-youtube-playlist

Copy an element from the previous command

You can specify a range via '-'.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands using sed

Commands using sed (1,319) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

Commands using sed (1,319)

sorted by