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Commands tagged grep

Commands tagged grep from sorted by
Terminal - Commands tagged grep - 308 results
find . -name '*.txt' -print0 | parallel -0 -j+0 lzma
2010-07-28 21:01:12
User: unixmonkey10455
Functions: find
Tags: find grep lzma
1
Up
Down
Recompress all text files in a subdirectory with lzma

This will deal nicely with filenames containing newlines and will run one lzma process per CPU core. It requires GNU Parallel http://www.youtube.com/watch?v=OpaiGYxkSuQ

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find . -name '*.txt' | grep -v '\.lzma$' | xargs -n 1 lzma -f -v -3
2010-07-21 16:58:41
User: cout
Functions: find grep xargs
Tags: find grep lzma
-2
Up
Down
Recompress all text files in a subdirectory with lzma
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rm $( ls | egrep -v 'abc|\s' )
2010-07-18 10:59:15
User: dbbolton
Functions: egrep ls rm
Tags: grep rm
-1
Up
Down
Remove all the files except abc in the directory

Really, you deserve whatever happens if you have a whitespace character in a file name, but this has a small safety net. The truly paranoid will use '-i'.

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alias dush="du -xsm * | sort -n | awk '{ printf(\"%4s MB ./\",\$1) ; for (i=1;i<=NF;i++) { if (i>1) printf(\"%s \",\$i) } ; printf(\"\n\") }' | tail"
2010-07-15 10:38:27
User: dopeman
Functions: alias
Tags: bash disk usage sort du grep
-1
Up
Down
easily find megabyte eating files or directories

Essentially the same as funky's alias, but will not traverse filesystems and has nicer formatting.

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grep -R --include=*.cpp --include=*.h --exclude=*.inl.h "string" .
2010-07-14 16:32:28
User: sweinst
Functions: grep
Tags: find xargs grep
0
Up
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Recursive grep of all c++ source under the current directory

Gnu grep allows to restrict the search to files only matching a given pattern. It also allows to exclude files.

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find . -name '*.?pp' -exec grep -H "string" {} \;
2010-07-14 15:10:23
User: rthemocap
Functions: find grep
Tags: find xargs grep
1
Up
Down
Recursive grep of all c++ source under the current directory
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find . -name '*.?pp' | xargs grep -H "string"
2010-07-14 14:41:07
User: cout
Functions: find grep xargs
Tags: find xargs grep
2
Up
Down
Recursive grep of all c++ source under the current directory

I like this better than some of the alternatives using -exec, because if I want to change the string, it's right there at the end of the command line. That means less editing effort and more time to drink coffee.

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grep -i '^DocumentRoot' /etc/httpd/conf/httpd.conf | cut -f2 -d'"'
2010-07-14 13:30:36
User: hm2k
Functions: cut grep
Tags: grep cut apache httpd
-1
Up
Down
How To Get the Apache Document Root
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vim --version | grep -P '^(\+|\-)' | sed 's/\s/\n/g' | grep -Pv '^ ?$'
2010-07-02 02:57:19
User: evaryont
Functions: grep sed vim
Tags: vim sed grep
2
Up
Down
List of all vim features

The above output is for a custom compiled version of Vim on Arch Linux.

Just a quick shell one liner, and presents a list of all the enabled and disabled (those prefixed with a '-') features.

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curl -s "http://www.socrata.com/api/views/vedg-c5sb/rows.json?search=Axelrod" | grep "data\" :" | awk '{ print $17 }'
2010-07-01 23:54:54
User: mheadd
Functions: awk grep
Tags: awk grep curl
1
Up
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Find the annual salary of any White House staffer.

Query the Socrata Open Data API being used by the White House to find any employee's salary using curl, grep and awk.

Change the value of the search parameter (example uses Axelrod) to the name of any White House staffer to see their annual salary.

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function mg(){ man ${1} | egrep ${2} | more; }
2010-07-01 21:14:24
User: quincymd
Functions: egrep man
Tags: man grep
0
Up
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Fewer keystrokes to search man page of command

Quicker way to search man pages of command for key word

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ifconfig eth0 | grep -o "inet [^ ]*" | cut -d: -f2
2010-07-01 20:25:55
User: dooblem
Functions: cut grep ifconfig
Tags: ifconfig grep cut
0
Up
Down
Get IPv4 of eth0 for use with scripts
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ifconfig eth0 | awk '/inet / {print $2}' | cut -d ':' -f2
2010-06-30 08:52:01
User: mrwill
Functions: awk cut ifconfig
Tags: ifconfig awk grep cut
0
Up
Down
Get IPv4 of eth0 for use with scripts
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wget -O - http://www.commandlinefu.com/commands/browse/rss 2>/dev/null | awk '/\s*<title/ {z=match($0, /CDATA\[([^\]]*)\]/, b);print b[1]} /\s*<description/ {c=match($0, /code>(.*)<\/code>/, d);print d[1]} ' | grep -v "^$"
2010-06-29 16:22:03
User: nikunj
Functions: awk grep wget
Tags: awk grep meta
1
Up
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Echo the latest commands from commandlinefu on the console

A Quick variation to the latest commands list with the new-lines skipped. This is faster to read.

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for f in $(find /path/to/base -type f | grep -vw CVS); do grep -Hn PATTERN $f; done
2010-06-29 15:58:11
User: nikunj
Functions: find grep
Tags: find grep
0
Up
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Search for a pattern across files in a code base (leaving out CVS directories)

I use this sometimes when ctags won't help.

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ifconfig eth0 | grep "inet " | cut -d ':' -f2 | awk '{print $1}'
2010-06-29 00:06:08
User: jaimerosario
Functions: awk cut grep ifconfig
Tags: ifconfig awk grep cut
2
Up
Down
Get IPv4 of eth0 for use with scripts

I've been using it in a script to build from scratch proxy servers.

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zgrep -h "" `ls -tr access.log*`
2010-06-19 09:44:05
User: dooblem
Functions: zgrep
Tags: zgrep grep logs zcat
2
Up
Down
concatenate compressed and uncompressed logs

I use zgrep because it also parses non gzip files.

With ls -tr, we parse logs in time order.

Greping the empty string just concatenates all logs, but you can also grep an IP, an URL...

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aptitude remove $(dpkg -l|egrep '^ii linux-(im|he)'|awk '{print $2}'|grep -v `uname -r`)
2010-06-10 21:23:00
User: dbbolton
Functions: awk egrep grep
Tags: Debian Linux awk grep kernel dpkg aptitude
8
Up
Down
Remove all unused kernels with apt-get

This should do the same thing and is about 70 chars shorter.

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grep -Eo \([0-9]\{1,3\}[\.]\)\{3\}[0-9] file | sort | uniq
2010-05-23 11:23:57
User: foolano
Functions: file grep sort
Tags: grep ip address
2
Up
Down
Extract IPv4 addressess from file
Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
dpkg -l | cut -d' ' -f 3 | grep ^python$
2010-05-09 08:30:37
User: richard_ma
Functions: cut grep
Tags: grep dpkg cut
1
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Down
Check the package is installed or not. There will show the package name which is installed.

The ^python$ is a package name patten. You can change whatever you want.

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grep -P '\t' filename
2010-05-02 02:24:14
User: SuperJediWombat
Functions: grep
Tags: grep
3
Up
Down
grep for tabs without using Ctrl-V trick

-P tells grep to use perl regex matches (only works on the GNU grep as far as I know.)

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grep <something> logfile | cut -c2-18 | uniq -c
2010-04-29 11:26:09
User: buzzy
Functions: cut grep uniq
Tags: uniq grep cut
1
Up
Down
Count occurrences per minute in a log file

The cut should match the relevant timestamp part of the logfile, the uniq will count the number of occurrences during this time interval.

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df -l | grep -e "9.%" -e "100%"
2010-04-26 17:57:54
User: dooblem
Functions: df grep
Tags: mount partition grep df
2
Up
Down
Report full partitions from a cron

Reports all local partitions having more than 90% usage.

Just add it in a crontab and you'll get a mail when a disk is full.

(sending mail to the root user must work for that)

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vim -r 2>&1 | grep '\.sw.' -A 5 | grep 'still running' -B 5
2010-04-17 19:43:35
User: rkulla
Functions: grep vim
Tags: vim find grep files locate open
3
Up
Down
Find all files currently open in Vim and/or gVim

Catches .swp, .swo, .swn, etc.

If you have access to lsof, it'll give you more compressed output and show you the associated terminals (e.g., pts/5, which you could then use 'w' to figure out where it's originating from): lsof | grep '\.sw.$'

If you have swp files turned off, you can do something like: ps x | grep '[g,v]im', but it won't tell you about files open in buffers, via :e [file].

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for i in `ls ~/.mozilla/firefox/*/Cache`; do file $i | grep -i mpeg | awk '{print $1}' | sed s/.$//; done
2010-04-11 23:14:18
User: TuxOtaku
Functions: awk file grep sed
Tags: sed awk flash grep file mp3 firefox for mpeg cache
4
Up
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Grab a list of MP3s out of Firefox's cache

Ever gone to a site that has an MP3 embedded into a pesky flash player, but no download link? Well, this one-liner will yank the names of those tunes straight out of FF's cache in a nice, easy to read list. What you do with them after that is *ahem* no concern of mine. ;)

Show sample output | Comments (4) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate