Commands using grep sorted by votes

Commands using grep (1,935)

sorted by

Return the one-liner google response for queries like "12*24" or "what time is it in the uk"
This is sample output - yours may be different.
0

google() { Q="$@"; GOOG_URL='https://www.google.com/search?q='; AGENT="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36" elinks -dump "${GOOG_URL}${Q//\ /+}" | grep "\*" | head -1 }

runvnc · 2014-04-17 07:37:25 5
Get the URL for the git-annex webapp
This is sample output - yours may be different.
0

grep URL ~/annex/.git/annex/webapp.html | tr -d '">' | awk -F= '{print $4 "=" $5}'

kseistrup · 2014-04-20 08:46:37 8
AIX: get LUN ID for a given filesystem

For a given filesystem return the LUN ID. Command assumes 1:1 relationship between fs:lv:hdisk:lun which may not be the case in all environments. Show Sample Output
This is sample output - yours may be different.
```
$ getlunid /usr
371100c801ef00004c0000000102745c6e41.105VDASD03AIXvscsi
```
0

getlunid() { lv=$(df -P $1|grep "^/dev/"|awk '{print $1}'|awk -F/ '{print $3}'); hd=$(lslv -l $lv|tail -1|awk '{print $1}');id=$(odmget -q "name like $hd AND attribute=unique_id" CuAt|grep "value ="|awk -F= '{print $2}'|tr -d '"');echo $id;}

bigstupid · 2014-04-20 18:43:21 6
Convert all .weblock files in present directory (Apple url) to a url on the stdout.

Convert all .weblock files (Apple url) to a url on the stdout.
This is sample output - yours may be different.
0

strings * |grep -v "Apple" |grep http |uniq |sed "s/<[^>]\+>//g"

metaverse · 2014-04-24 17:18:33 6
get process id with program name
This is sample output - yours may be different.
0

ps -efa | grep httpd | grep -v grep | awk '{ print $2 }' |xargs

simplewall · 2014-04-25 18:38:43 6
Get MAC ID linux command line

Many tasks need mac id check. above command exactly do the same Show Sample Output
This is sample output - yours may be different.
```
001D292B2668
```
0

ifconfig |grep HWaddr |cut -d ' ' -f 1,11 |grep eth0 |cut -d ' ' -f 2|xargs | awk -F':' '{ print $1$2$3$4$5$6 }'

simplewall · 2014-04-25 18:43:47 13
To Find CVE fix from the rpm log

Found it online and could be very useful
This is sample output - yours may be different.
0

for i in $(cat vulns.txt); do echo $i; rpm -qa ?changelog | grep -i $i; done

sonny108 · 2014-04-30 16:11:14 6
Check reachable sites
This is sample output - yours may be different.
0

10,30,50 * * * * ping -q -c1 -w3 www.test.com | grep '1 received' - || mail -ne -s'Host 192.168.0.14 not reachable' test@gmail.com

blendisela · 2014-05-01 11:37:15 11
To get the average httpd process size, log into your server and run the following on the command line
This is sample output - yours may be different.
0

ps aux | grep 'httpd' | awk '{print $6/1024 " MB";}'

djzander · 2014-05-15 17:44:01 9
If you want to calculate the average on-the-fly
This is sample output - yours may be different.
0

ps aux | grep 'httpd' | awk '{print $6/1024;}' | awk '{avg += ($1 - avg) / NR;} END {print avg " MB";}'

djzander · 2014-05-15 17:44:50 7
find the full amount of ram associated with mysql
This is sample output - yours may be different.
0

ps aux | grep 'mysql' | awk '{print $6/1024 " MB";}'

djzander · 2014-05-15 17:45:37 8
The cycle count information is displayed among the other known battery information.

Better to use this command instead of installing whole new application to check the battery stats. Show Sample Output
This is sample output - yours may be different.
```
    | |           "MaxCapacity" = 6629
    | |           "CurrentCapacity" = 6629
    | |           "LegacyBatteryInfo" = {"Amperage"=0,"Flags"=5,"Capacity"=6629,"Current"=6629,"Voltage"=12843,"Cycle Count"=32}
    | |           "DesignCapacity" = 6330
```
0

ioreg -l | grep Capacity

oieesah · 2014-05-22 11:39:49 7
Kill the X Server

There are times when a X Window server hangs. When this happens, you can log in on a terminal and kill the Xorg process (i.e. the X Server). This one line command will do the trick.
This is sample output - yours may be different.
0

sudo kill -9 $( ps -e | grep Xorg | awk '{ print $1 }' )

jeffskinnerbox · 2014-06-01 22:43:32 7
Number of apache2 processes running with memory usage filter (sorting asc)
This is sample output - yours may be different.
0

watch -n0.5 'ps -e -o pid,vsz,comm= | sort -n -k 2 | grep apache | wc -l'

djzander · 2014-06-06 12:56:30 7
Detect Connections On Port - Android

Show If Someone Is Connected To The Android Device On And Get Their IP Address
This is sample output - yours may be different.
0

netstat -lptu | grep -E "22.*ESTABLISHED" | cut -s -d ':' -f2 | awk '{print $2}'

DarkXDroid · 2014-06-13 08:38:16 23
Search google.com on your terminal

Mac OSX friendly version of google function Show Sample Output
This is sample output - yours may be different.
```
http://www.bbc.co.uk/schoolradio/subjects/earlylearning/nurserysongs/P-T/row_row_row_your_boat
http://www.bbc.co.uk/schoolradio/subjects/earlylearning/nurserysongs/P-T/row_row_row_your_boat
http://www.wordsforlife.org.uk/songs/row-your-boat
http://supersimplelearning.com/other-songs/row-row-row-your-boat/
http://wiki.kcls.org/index.php/Row,_Row,_Row_Your_Boat
http://bussongs.com/songs/row-row-row-your-boat.php
```
0

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[^\&]*&" | sed 's/href=".url.q=$[^\&]*$.*/\1/';}

davethomas11 · 2014-06-18 17:20:41 6
Get result of command in pipe sequence

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. Show Sample Output
This is sample output - yours may be different.
```
1
```
0

echo "Dave" | grep -o "bob" | sed 's/D/f/'; echo ${PIPESTATUS[1]};

davethomas11 · 2014-06-21 04:00:53 10
Btrfs: Find file names with checksum errors

Filter entries in OpenSuse /var/log/messages like: timestamp servername kernel: [83242.108090] btrfs: checksum error at logical 1592344576 on dev /dev/sda5, sector 5223584, root 5, inode 2652, offset 282624, length 4096, links 1 (path: log/warn) Show Sample Output
This is sample output - yours may be different.
```
lib/mysql/ib_logfile0
lib/mysql/ibdata1
log/warn
```
0

grep "btrfs: checksum error at logical" /var/log/messages | egrep -o "[^ ]+$" | tr -d ')' | sort | uniq

jcoll · 2014-07-01 08:15:26 7
Btrfs: Find file names with checksum errors

btrfs checksum errors console report. Show Sample Output
This is sample output - yours may be different.
```
btrfs checksum error(s) on: 
         dev /dev/sda5, path: lib/mysql/ib_logfile0
         dev /dev/sda5, path: lib/mysql/ibdata1
         dev /dev/sda5, path: log/warn
```
0

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

jcoll · 2014-07-01 08:56:05 7
Grab all JIRA ticket numbers (e.g. ABC-123) mentioned in commits added in feature branch off of master

To get the list of tickets in a comma-separated list, pipe the above into: sort | uniq | perl -pe 's/\n/, /' | sed 's/, $//' Show Sample Output
This is sample output - yours may be different.
```
ABC-123
ABC-124
ABC-145
```
0

git log master...feature-a | grep -o -E '\b([A-Z]+)-[0-9]+\b' | sort | uniq

westonruter · 2014-07-07 18:51:01 6
grep an array item, like a_var[11], in a file

Just want to show the "+" usage in the grep command. And if using egrep, thing would be a little bit easier: grep -n "arrname\[[[:digit:]]+\]" filename Show Sample Output
This is sample output - yours may be different.
```
filename:11: printf("%d\n", arrname[1]);
filename:14: printf("%d\n", arrname[12]);
```
0

grep -n "arrname\[[[:digit:]]\+\]" filename

sleepy_11 · 2014-07-09 08:02:01 7
Append html-extension to all files in a directory structure that contains html-code.
This is sample output - yours may be different.
0

find . |xargs grep '<html\|<body\|<table' |sed '/~/d;s/:.*//' |sed 's/.*/mv & &.html/' |uniq >run.sh; sh run.sh

mobluse · 2014-07-09 19:20:40 13
show filenames in tail output with color

This shows the the filenames of tail output in color. Helpful if you have many log files to tail
This is sample output - yours may be different.
0

tail -f *.log | grep --color=always '|==>.+<=='

danimath · 2014-07-11 07:47:27 7
scan folder to check syntax error in php files

Same but will only returns the invalid file (great when emailing the list to the team).
This is sample output - yours may be different.
0

find . -name "*.php" -exec php -l {} \; | grep found

azizsaleh · 2014-07-11 14:17:34 7
Postfix: Mailboxes over quota in queue
This is sample output - yours may be different.
0

postqueue -p | grep -A 1 "over quota" | grep @ | sort | uniq | tr --delete ' '

rmontagud · 2014-07-14 08:23:43 12
‹ First < 50 51 52 53 54 > 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

Copy something to multiple SSH hosts with a Bash loop

Just a quick and simple one to demonstrate Bash For loop. Copies 'file' to multiple ssh hosts.

Help shell find freshly installed applications (re: PATH)

Immediately after installing things into your PATH (e.g. under /usr/bin), currently open shells cannot find them ("zsh: command not found"). Use rehash to get the shell to rescan available executables.

Track X Window events in chosen window

After executing this, click on a window you want to track X Window events in. Explaination: "xev will track events in the window with the following -id, which we get by greping window information obtained by xwininfo"

Fetch every font from dafont.com to current folder

Requires aria2c but could just as easily wget or anything else. A great way to build up a nice font collection for Gimp without having to waste a lot of time. :-)

Show the last 20 sessions logged on the machine

change 20 by the number of sessions you want to know (20 it's fair enough)

Keep one instance of an irc chat client in a screen session

This command attempts to attach to existing irssi session, if one exists, otherwise creates one. I use "irc" because I use different irc clients depending on what system I am working on. Consistency is queen.

print indepth hardware info

wanna know something about your hardware? how about EVERYTHING?? then this should do ya well

Remove orphaned dependencies on Arch

-Qdt Lists dependencies/packages which are no longer required by any packages -q Output only package name (not the version number) -R Remove package(s) Rest is self-explanatory. I just started out with Arch - so if there is any better/standard method to achieve the same - please suggest.

Find the package that installed a command

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" }

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 grep

Commands using grep (1,935) 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 grep (1,935)

sorted by