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Commands using echo from sorted by
Terminal - Commands using echo - 1,291 results
eval echo $(echoprint-codegen "/path/to/file.mp3"| jq ' .[0].metadata | "mp3info -a \"" + .artist + "\" -t \"" + .title + "\" -l \"" + .release + "\" \"" + .filename + "\"" ' ) | bash
2014-08-08 21:14:53
User: glaudiston
Functions: echo eval
0

echoprint identify your song, then return artist, song name and album name(release) in a JSON. jq parse it and mp3info set the data in your mp3 file.

of course it depends on:

mp3info

jq

echoprint

You need to set the environment variable

export CODEGEN_NEST_API_KEY='YOUR_ECHONEST_KEY_HERE'

You can use it with find, but probably will bypass the 120 request/minute of developer account key. So, use a sleep to do it.

Something like:

find -name \*.mp3 | while read $f; do eval echo $(echoprint-codegen "$f" | jq ' .[0].metadata | "mp3info -a \"" + .artist + "\" -t \"" + .title + "\" -l \"" + .release + "\" \"" + .filename + "\"" ' ) | bash; sleep 1; done
[ `curl 'http://crl.godaddy.com/gds5-16.crl' 2>/dev/null | openssl crl -inform DER -noout -nextupdate | awk -F= '{print $2}' | xargs -I{} date -d {} +%s` -gt `date -d '8 hours' +%s` ] && echo "OK" || echo "Expires soon"
2014-08-07 17:18:38
User: hufman
Functions: awk date echo xargs
Tags: openssl
0

Downloads a CRL file, determines the expiration time, and checks when it will expire

(echo -e '\x06\x00\x00\x00\x00\x00\x01\x01\x00'; sleep 1)|nc -c $host 25565
echo "scale=1000; 4*a(1)" | bc -l
2014-07-31 19:13:26
User: regulatre
Functions: bc echo
0

Change the scale to adjust number of decimal places

prefix the command with "time" to benchmark the computer (compare how long it takes to calculate 10000 digits of pi on various computers).

changeFolder() { if [ $# -ne 2 ]; then echo "Usage: changeFolder old new"; return; fi; old=$(pwd); folder=$(echo "$old" | sed -e "s/$1/$2/g"); if [ ! -d "$folder" ]; then echo "Folder '$folder' not found."; return; fi; echo "$old -> $folder"; cd $folder;}
2014-07-29 15:36:32
User: Dracks
Functions: cd echo sed
0

change the path where you are, when is executed, is usefule when you've got folders to classify something like a tags, you've got devel/dist, android/ios, etc. like:

~user/Documents/devel/project

~user/Documents/dist/project

You can change between devel/project folder to dist/project without leave project.

If somebody has a better idea to do that without replace command.

echo "import uuid\nimport sys\nsys.stdout.write(str(uuid.uuid4()))" | python
2014-07-23 07:43:01
User: tippy
Functions: echo
Tags: python uuid
0

piped this to pbcopy (OSX only) you got a uuid in the pasteboard

echo {-1..-5}days | xargs -n1 date +"%Y-%m-%d" -d
wget https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash; mv git-completion.bash ~/.git-completion.bash; echo "source ~/.git-completion.bash" > ~/.bashrc; source ~/.git-completion.bash
2014-07-22 14:21:00
User: servel333
Functions: echo mv wget
0

Downloads this raw script https://github.com/git/git/blob/master/contrib/completion/git-completion.bash from Github, copies it to your home directory, autoloads it in ~/.bashrc and sources it.

macdst="5873b856445f";macsrc="d2a791e1715a";pkt="d4c3b2a1020004000000000000000000ffff000001000000e3eab353fa1f 0b007400000074000000$macdst $macsrc 0842ffffffffffff";for i in {1..16}; do pkt="$pkt $macdst"; done; echo "$pkt" | xxd -r -p > magicpacket.pcap
2014-07-02 17:37:44
Functions: echo
0

just set macdst to the mac address of the system

you wish to wake up, the macsrc is optional but helps

use tcpreplay to broadcast or wireshark to view

ssh <user>@<ip address> $(echo wmic process where \"name like \'%<process to kill>%\'\" delete)
2014-07-02 04:41:05
User: adanisch
Functions: echo ssh
0

Tested on Windows 8 w/SSH, Cygwin - it can be tricky to quote if you dont use the $(..) syntax to echo it back out

echo "btrfs checksum error(s) on: " && grep "btrfs: checksum error at logical" /var/log/messages | sed -e 's/^.*\( dev .*\)\(, sector.*\)\(path\: .*\))/\t\1, \3/' | sort | uniq
echo -e '\x2Hello, folks\t!\r' | sed "y/\x2\x9\xD\x20/&#9218;&#9225;&#9229;&#9248;/"
2014-06-30 14:42:15
User: hermannsw
Functions: echo sed
0

Not better, but more lightweight (sed instead of perl).

Above command is reduced due to length restriction of less than 256 characters and entity encoding of "Save" command on this page. This is complete command (best without entity encoding):

echo -e '\x2Helo folks\t!\r' | sed "y/\x0\x1\x2\x3\x4\x5\x6\x7\x8\x9\xA\xB\xC\xD\xE\xF\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F\x20/&#9216;&#9217;&#9218;&#9219;&#9220;&#9221;&#9222;&#9223;&#9224;&#9225;&#9226;&#9227;&#9228;&#9229;&#9230;&#9231;&#9232;&#9233;&#9234;&#9235;&#9236;&#9237;&#9238;&#9239;&#9240;&#9241;&#9242;&#9243;&#9244;&#9245;&#9246;&#9247;&#9248;/"

␂Helo␠folks␉!␍

echo -e "a\na\nb\nc\nd" | awk '{x[$0]++}END{for (z in x){if(x[z]==1){print z}}}'
echo "some cool message from terminal" | mail -s "test" email@address.com
echo "Dave" | grep -o "bob" | sed 's/D/f/'; echo ${PIPESTATUS[1]};
2014-06-21 04:00:53
User: davethomas11
Functions: echo grep sed
Tags: PIPESTATUS
0

Using the $PIPESTATUS array you can get the results of a command in a sequence of commands piped together. The command above returns the result of grep -o "bob", which is exit result of 1 since no match was made.

message="I have a nice easy typing pace"; for ((i=0; i<${#message}; i++)); do echo "after 200" | tclsh; printf "${message:$i:1}"; done; echo;
echo "I am $BASH_SUBSHELL levels nested";
echo $(ifconfig) | egrep -o "en.*?inet [^ ]* " | sed 's/.*inet \(.*\)$/\1/' | tail -n +2
function google { Q="$@";GOOG_URL='https://www.google.com/search?tbs=li:1&q=';AGENT="Mozilla/4.0";stream=$(curl -A "$AGENT" -skLm 10 "${GOOG_URL}${Q//\ /+}");echo "$stream" | grep -o "href=\"/url[^\&]*&amp;" | sed 's/href=".url.q=\([^\&]*\).*/\1/';}
find -type f -exec bash -c 'if ffmpeg -i "{}" 2>&1 | grep -qi h264 ; then echo "{}"; fi' \;
F=136; [[ $(($F % 4)) == 0 ]] && for i in $(seq 1 $(($F/4))); do echo -n $(($F-2*($i-1))),$((2*$i-1)),$((2*$i)),$(($F-2*$i+1)),; done | sed 's/,$/\n/' || echo "Make F a multiple of 4."
2014-06-11 01:21:08
User: Kayvlim
Functions: echo sed seq
0

Useful if you don't have at hand the ability to automatically create a booklet, but still want to.

F is the number of pages to print. It *must* be a multiple of 4; append extra blank pages if needed.

In evince, these are the steps to print it, adapted from https://help.gnome.org/users/evince/stable/duplex-npage.html.en :

1) Click File ▸ Print.

2) Choose the General tab.

Under Range, choose Pages.

Type the numbers of the pages in this order (this is what this one-liner does for you):

n, 1, 2, n-1, n-2, 3, 4, n-3, n-4, 5, 6, n-5, n-6, 7, 8, n-7, n-8, 9, 10, n-9, n-10, 11, 12, n-11...

...until you have typed n-number of pages.

3) Choose the Page Setup tab.

- Assuming a duplex printer:

Under Layout, in the Two-side menu, select Short Edge (Flip).

- If you can only print on one side, you have to print twice, one for the odd pages and one for the even pages.

In the Pages per side option, select 2.

In the Page ordering menu, select Left to right.

4) Click Print.

NUM=-1; while NUM=`echo $NUM + 1 | bc`; do echo $NUM && sleep 1; done
2014-06-07 20:48:45
User: tomivs
Functions: echo sleep
0

Chronometer using the bc calculator.

col() { awk '{print $('$(echo $* | sed -e s/-/NF-/g -e 's/ /),$(/g')')}'; }
2014-06-05 18:01:31
User: tekniq
Functions: awk col echo sed
0

Something I do a lot is extract columns from some input where cut is not suitable because the columns are separated by not a single character but multiple spaces or tabs. So I often do things like:

... | awk '{print $7, $8}'

... which is a lot of typing, additionally slowed down when typing symbols like '{}$ ... Using the simple one-line function above makes it easier and faster:

... | col 7 8

How it works:

The one-liner defines a new function with name col

The function will execute awk, and it expects standard input (coming from a pipe or input redirection)

The function arguments are processed with sed to use them with awk: replace all spaces with ,$ so that for example 1 2 3 becomes 1,$2,$3, which is inserted into the awk command to become the well formatted shell command: awk '{print $1,$2,$3}'

Allows negative indexes to extract columns relative to the end of the line.

Credit: http://www.bashoneliners.com/oneliners/oneliner/144/

while true; do clear; cat /proc/[0-9]*/stat | cut -d' ' -f 3 | sort | uniq -c | awk '{print $2" "$1}'; echo '---'; sleep 1; done
echo 'flush_all' | nc localhost 11211