Commands tagged grep sorted by votes

Commands tagged grep (409)

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Show local/public IP adresses with or without interface argument using a shell function for Linux and MacOsX

Like the tiltle said, you can use an argument too ( the interface ) MyIps eth0 will show only the IP of this interface and the public IP ( tested with Linux ) You can add that function in ~/.bashrc, then . ~/.bashrc Now you are ready to call this function in all your terms... Show Sample Output
This is sample output - yours may be different.
```
local:
10.0.0.1
10.0.0.221
192.168.0.1

public:
212.34.55.218
```
1

MyIps(){ echo -e "local:\n$(ifconfig $1 | grep -oP 'inet (add?r:)?\K(\d{1,3}\.){3}\d{1,3}')\n\npublic:\n$(curl -s sputnick-area.net/ip)"; }

sputnick · 2009-12-06 22:52:31 6
ShadyURL via CLI
This is sample output - yours may be different.
1

SITE="www.google.com"; curl --silent "http://www.shadyurl.com/create.php?myUrl=$SITE&shorten=on" | awk -F\' '/is now/{print $6}'

allrightname · 2010-02-19 14:21:02 6
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. Show Sample Output
This is sample output - yours may be different.
```
python
```
1

dpkg -l | cut -d' ' -f 3 | grep ^python$

richard_ma · 2010-05-09 08:30:37 7
Recursive grep of all c++ source under the current directory
This is sample output - yours may be different.
1

find . -name '*.?pp' -exec grep -H "string" {} \;

rthemocap · 2010-07-14 15:10:23 5
Find default gateway
This is sample output - yours may be different.
1

netstat -rn | grep UG | tr -s " " | cut -d" " -f2

greenmang0 · 2010-08-09 15:25:18 3
list all file extensions in a directory

Just a little simplification.
This is sample output - yours may be different.
1

find /path/to/dir -type f | grep -o '\.[^./]*$' | sort | uniq

dooblem · 2010-08-12 14:32:48 7
Readd all files is missing from svn repo

When working on a big proeject with SVN, you create quite much files, for now! Can just sit here and type svn add for all of them! svn status will return a list of all of file which get ?(not add), "M"(Modified), "D"(Deleted)! This code just grep "?" flag, then add it into SVN again!
This is sample output - yours may be different.
1

svn status | grep "^\?" | awk '{print $2}' | xargs svn add

kureikain · 2010-08-14 18:56:15 4
Multi line grep using sed and specifying open/close tags

This line does not include your closing tag in the output. Show Sample Output
This is sample output - yours may be different.
```
daveqb@localhost /tmp $
cat test
one two three
four
five
six
seven

daveqb@localhost /tmp $
sed '/'"four"'/,/'"six"'/{/'"six"'/d;p};d' "test"
four
five
```
1

sed '/'"<opening tag>"'/,/'"<closing tag>"'/{/'"<closing tag>"'/d;p};d' "<file>"

DaveQB · 2010-11-08 21:43:00 4
List the CPU model name

Information for only one core. Show Sample Output
This is sample output - yours may be different.
```
model name	: AMD Phenom(tm) II X4 965 Processor
cpu MHz		: 3400.000
```
1

grep 'model\|MHz' /proc/cpuinfo |tail -n 2

schmiddim · 2010-11-14 20:32:27 4
Download all data from Google Ngram Viewer

To learn more about Google Ngram Viewer: http://ngrams.googlelabs.com/info
This is sample output - yours may be different.
1

wget -qO - http://ngrams.googlelabs.com/datasets | grep -E href='(.+\.zip)' | sed -r "s/.*href='(.+\.zip)'.*/\1/" | uniq | while read line; do `wget $line`; done

sexyprout · 2010-12-20 17:46:04 207
Get a Bulleted List of SVN Commits By a User for a Specifc Day (Daily Work Log)

* Replace USERNAME with the desired svn username * Replace the first YYYY-MM-DD with the date you want to get the log (this starts at the midnight event that starts this date) * Replace the second YYYY-MM-DD with the date after you want to get the log (this will end the log scan on midnight of the previous day) Example, if I want the log for December 10, 2010, I would put {2010-12-10}:{2010-12-11} Show Sample Output
This is sample output - yours may be different.
```
$ svn log -r '{2010-12-10}:{2010-12-11}' | sed -n '1p; 2,/^-/d; /antic/,/^-/p' | grep -E -v '^(r[0-9]|---|$)' | sed 's/^/* /g'
* Commit message 5
* Commit message 4
* Commit message 3
```
1

svn log -r '{YYYY-MM-DD}:{YYYY-MM-DD}' | sed -n '1p; 2,/^-/d; /USERNAME/,/^-/p' | grep -E -v '^(r[0-9]|---|$)' | sed 's/^/* /g'

antic · 2010-12-22 17:52:19 5
Look up a unicode character by name

No need for further filedes or substitution for splitting. Simply use read a b
This is sample output - yours may be different.
1

grep -i "$*" /usr/lib/perl5/Unicode/CharName.pm | while read a b; do /usr/bin/printf "\u$a\tU+%s\t%s\n" "$b"; done

ioggstream · 2011-01-04 11:30:16 6
Check if a package is installed. If it is, the version number will be shown.

If the first two letters are "ii", then the package is installed. You can also use wildcards. For example, . dpkg -l openoffice* . Note that dpkg will usually not report packages which are available but uninstalled. If you want to see both which versions are installed and which versions are available, use this command instead: . apt-cache policy python Show Sample Output
This is sample output - yours may be different.
```
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                            Version                              Description
+++-===============================================-====================================-==============================================================================
ii  python                                          2.6.6-3+squeeze2                     interactive high-level object-oriented language (default version)
```
1

dpkg -l python

hackerb9 · 2011-01-05 06:15:13 5
search for text in files. recursive.

recursively search dir for a a particular file type, search each file for a particular text. Show Sample Output
This is sample output - yours may be different.
```
/name/of/dir/hello.txt: text I am searching for is hello, world
/name/of/dir/foo.txt: text I am searching for is foo bar baz
```
1

find /name/of/dir/ -name '*.txt' | xargs grep 'text I am searching for'

erickb · 2011-01-05 15:20:40 3
Find files in multiple TAR files

A quick find command to identify all TAR files in a given path, extract a list of files contained within the tar, then search for a given string in the filelist. Returns to the user as a list of TAR files found (enclosed in []) followed by any matching files that exist in that archive. TAR can easily be swapped for JAR if required. Show Sample Output
This is sample output - yours may be different.
```
[andrew.taylor@localhost ~]$ find . -type f -name "*.tar" -printf [%f]\\n -exec tar -tf {} \; | grep -iE "[\[]|configuration"
[tar2.tar]
Platform_Configuration_Guide.pdf
Product_Management_Configuration_Guide.pdf
[tar1.tar]
WMS_Configuration_Guide.pdf
[tar3.tar]
Reverse_Logistics_Configuration_Guide.pdf
```
1

find . -type f -name "*.tar" -printf [%f]\\n -exec tar -tf {} \; | grep -iE "[\[]|<filename>"

andrewtayloruk · 2011-01-06 13:01:38 5
find files beginning with filename* that do not include "string"

Inverse grep, to find files without the string
This is sample output - yours may be different.
1

grep -L "string" filename*

dlebauer · 2011-01-10 19:48:00 3
list all file extensions in a directory

A shorter version Show Sample Output
This is sample output - yours may be different.
```
.tar.bz2
.pdf
.pl
.py
.pyc
.tex
.txt
```
1

ls | grep -Eo "\..+" | sort -u

berr · 2011-02-14 04:52:43 9
List your interfaces and MAC addresses
This is sample output - yours may be different.
1

ifconfig | grep HWaddr | awk '{print $1,$5}'

jaimerosario · 2011-05-28 23:12:01 3
Get all files of particular type (say, PDF) listed on some wegpage (say, example.com)

This example command fetches 'example.com' webpage and then fetches+saves all PDF files listed (linked to) on that webpage. [*Note: of course there are no PDFs on example.com. This is just an example]
This is sample output - yours may be different.
1

curl -s http://example.com | grep -o -P "<a.*href.*>" | grep -o "http.*.pdf" | xargs -d"\n" -n1 wget -c

b_t · 2011-06-09 14:42:46 5
Enable color pattern match highlighting in grep(1)

This will affect all invocations of grep, even when it is called from inside a script.
This is sample output - yours may be different.
1

export GREP_OPTIONS='--color=auto'

h3xx · 2011-07-24 01:32:10 3
Find the location of the currently loaded php.ini file
This is sample output - yours may be different.
1

php --ini

alpha1130 · 2011-08-02 06:19:11 4
List only directories, one per line

Alternatively, ls -F | grep /\$ but will break on directories containing newlines. Or the safe, POSIX sh way (but will miss dotfiles): for i in *; do test -d "./$i" && printf "%s\n" "$i"; done
This is sample output - yours may be different.
1

find * -type d -maxdepth 0

edogawaconan · 2011-08-07 06:04:50 4
How To Get the Apache Document Root

Grabs the Apache config file (yielded from httpd) and returns the path specified as DocumentRoot. Show Sample Output
This is sample output - yours may be different.
```
/var/www/public_html
```
1

httpd -V | grep -i SERVER_CONFIG_FILE | cut -f2 -d'"' | xargs grep -i '^DocumentRoot' | cut -f2 -d'"'

dcpesses · 2011-08-13 20:45:05 5
Use Perl like grep

Much better alternatives - grep-alikes using perl regexps. With more options, and nicer outputs.
This is sample output - yours may be different.
1

ack; pcregrep

depesz · 2011-08-14 18:01:36 3
What is the use of this switch ?

Find the usage of a switch with out searching through the entire man page. Usage: manswitch [cmd] [switch] Eg: manswitch grep silent ____________________________ In simple words man <cmd> | grep "\-<switch>" Eg: man grep | grep "\-o" This is not a standard method but works. Show Sample Output
This is sample output - yours may be different.
```
$ manswitch grep o
       -o, --only-matching
              Print only the matched (non-empty) parts of a matching line, with each such part on a separate output line.

       -q, --quiet, --silent
              Quiet; do not write anything to standard output.  Exit immediately with zero status if any match is  found,
              even if an error was detected.  Also see the -s or --no-messages option.  (-q is specified by POSIX.)
ly mandates, for programs such as grep, cmp, and diff, that the exit
$ 
```
1

manswitch() { man $1 | grep -A5 "^ *\-$2"; }

totti · 2011-08-19 08:36:54 5
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Make a playlistfile for mpg321 or other CLI player

A short variant if you have only one directory whit only audio files in it.

List only directories, one per line

Alternatively, $ ls -F | grep /\$ but will break on directories containing newlines. Or the safe, POSIX sh way (but will miss dotfiles): $ for i in *; do test -d "./$i" && printf "%s\n" "$i"; done

Convert files from DOS line endings to UNIX line endings

Here "^M" is NOT "SHIFT+6" and "M". Type CTRL+V+M to get it instead. Its shortest and easy. And its sed!, which is available by default in all linux flavours.. no need to install extra tools like fromdos.

show installed but unused linux headers, image, or modules

will show: installed linux headers, image, or modules: /^ii/!d avoiding current kernel: /'"$(uname -r | sed "s/$.*$-$[^0-9]\+$/\1/")"'/d only application names: s/^[^ ]* [^ ]* $[^ ]*$.*/\1/ avoiding stuff without a version number: /[0-9]/!d

Generate random valid mac addresses

Python Alternative

get all Google ipv4 subnets for a iptables firewall for example

a bit shorter, parenthesis not needed but added for clarity

Netcat & Tar

Create a tarball on the client and send it across the network with netcat on port 1234 where its extracted on the server in the current directory.

get you public ip address

Combine cssh and shell expansion to execute commands on a large cluster

This will open an awful lot of little windows, but is quite useful if you want to quickly patch something on a cluster of servers.

Count the number of pages of all PDFs in current directory and all subdirs, recursively

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Commands tagged grep (409)

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