grep a Unix command-line utility which searches input passed to it for lines matching a regular expression, and prints the results.

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GREP for multiple strings with wildcard

I am trying to copy lines from a log file from certain days. Here's an example of what they look like. 2014-05-01T15:53:16+00:00 DEBUG (7): 2014-04-301T11:08:10+00:00 DEBUG (7): This GREP ...
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1answer
1k views

Why ssh connection is refused?

How can I set up ssh connection success for all times? I do remote communication to my Raspberry Pi using ssh. Most of the time I can connect. But sometimes, I got connection error as "session is ...
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83 views

What does ps axuwfw return?

I am getting strange output including my old makefile output and process tree when running below command on linux ps axuwfw Also, what is the usefulness of the following command and how does it ...
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114 views

Spotlight search with context?

I'd like to perform searches so that: 1) It can search in the text in a large number of pdf files. Specifically, I want to search within a directory with nested directories several layer deep, and ...
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278 views

Print or grep lines which start from second column

I want to print lines which start from second column (first column is white space). $ cat test.txt first second third four second five seven Output should be: second second ...
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147 views

How does grep deal with overlapping lines?

Suppose my text file looks like this: hello world1 foo bar2 hello world3 foo bar4 hello world5 foo bar If I run this command grep -A 4 'hello' draft.txt, I thought it print something like this: ...
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120 views

Trying to count and print song file names using awk

RANK NAME BAND YEAR GENERE DOMESTIC/INTERNATIONAL 206:Reach Out, I'll Be There:The Four Tops:1978:Pop:3/2 207:Bye Bye Love:The Everly Brothers:1950:Classic:3/2 ...
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40 views

grep and search and replace in linux accepting parameters with /

I'm trying to find and replace the contents of a file using grep and sed. grep "#!/bin/bash" ./ | sed xargs -i 's/#!/bin/bash/#!/usr/bin/env bash' How do I make sure that the string #!/bin/bash will ...
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Powershell equivalent of `grep -r -l` (--files-with-matches)

In Powershell, how do I list all files in a directory (recursively) that contain text that matches a given regex? The files in question contain really long lines of incomprehensible text, so I don't ...
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3answers
157 views

Grep for block surrounding an error message

I want to grep for the block of logs around a particular error message. Say I know my log looks like this: [----] I, [2014-04-10T19:12:36.294512 #1910:e93004] INFO -- : Started GET "/ems_infra/new" ...
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137 views

Oddity: “grep” cmd in /etc/network/interfaces

While digging through the birds-nest of network initialisation in our embedded linux setup (Linux SDK on Leopardboard SBC) we've come across what seems like an odd and possibly non-functioning line in ...
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99 views

command to delete all files with numbers

How can I delete nay file that has a number in its name from directory /www/ and up? Like, it would delete a1.php a2.php 123213.php asdasd5.php Would this work? ls | grep \([1-9]\) -f | xargs rm ...
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377 views

How to search for a particular pattern in a log file and count the number of matches?

In a very large log file I have entries like : FLOW ENTERING somecompany.somepackage.datacontrol.provider.DataProvider@c37ae61.release() The only change between what differs between entries is ...
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1answer
104 views

Grep and What If 75

I'm trying to run the command from What if 75: cat wordlist.txt | perl -pe 's/^(.*)$/\L$& \U$&/g' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' '2223334445556667777888999' | grep -P "(.)\1\1\1\1\1" I ...
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366 views

How to grep rows that have value less than 0.2 in a specific column? [closed]

ID RT EZ Z0 Z1 Z2 RHO PHE 1889 UN NA 1.0000 0.0000 0.0000 0.8765 -1 1890 UN NA 1.0000 0.0000 0.0000 0.4567 -1 1891 UN NA 1.0000 0.0000 ...
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1answer
32 views

Restrict grepping to non-comment lines

I need to find in Perl source files lines containing bin/exim|SendEmail|Unformatted except of comment lines (lines starting with # with possible whitespace before). I know how to do it with a ...
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2answers
348 views

bzgrep -H pattern file.bz2 gives no filename, but “standard input”

I thought -H always should print filename before matched line. this is true for grep, but not for bzgrep: $ grep -H pattern file1 file1: data pattern data $ bzgrep -H pattern file2.bz2 (standard ...
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189 views

Why doesn't grep work with single quotes?

I have a bash script wrapped in " " so I need to use ' ' for my grep command but it doesn't work. I can't switch the quotes because then the variables are not expanded. #!/bin/bash PWD=`pwd` source ...
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41 views

Is it possible to make the “-s” an automatic option on grep?

I'm using Mac 10.9.1. Occasionally in my terminal, I will run grep commands like grep -i -s 'mystring' * Is there a way I can make the "-s" (--no-messages) option, the default whenever i run grep? ...
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161 views

Extract stings between a delimiter if it matches a certain string

File cat hosts.cfg define host { host_name switchlan alias switchlan address ...
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1answer
1k views

Using grep to filter output of a process

I'm using command | grep -v "JavaScript strict warning" to filter the output of a command (hiding warnings). The grep command works fine when I test it like this: $ printf "JavaScript strict warning: ...
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80 views

apache mod rewrite - how to determine what file on disk is being hit?

A project that I am newly working on has been around for years, and it has managed to accumulate several hundred rather complex RewriteRules within the Apache conf files. When working with some ...
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Grep values from nethog and netperf [duplicate]

I need to monitor the network activities of a process and the bandwidth of the connection. So I decided to use nethog and netperf combine with grep and awk to write the values to a file. nethog ...
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484 views

Grep values from nethog and netperf

I need to monitor the network activities of a process and the bandwidth of the connection. So I decided to use nethog and netperf combine with grep and awk to write the values to a file. nethog ...
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129 views

Find all php files which first or second line has more than N characters

I would like to find all php files on my server which first line or second line has more than N characters. I would like to print both the file name and the line content that was found. How would I ...
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842 views

how to use grep and mv together in a directory in shell?

how do you grep the contents of all files in a directory for "TEST" then move those files to a different directory(like the home dir.)?
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110 views

Find word that has more than 50 characters in all php files

I am trying to use find in combination with grep to find all the php files in my web server which have a word (any sequence of characters except whitespace) with more than 50 characters. I have this ...
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256 views

I want to find out word which ends with ()…Use grep

I want to find out word which ends with ()...Using the grep command in linux. grep file_name_where_i_want_to_search "*()" some thing like that....but its not working
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53 views

How to find files which do not contain their own filename

When using templates to generating files, it's important to include the template's name inside the template. When reading a generated file, it helps you find the template used to generate it. I want ...
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1answer
32 views

How to find files that contain a string in its content OR the path?

Find and grep does not work afaik because I need to create a list of files that satisfy EITHER requirement, not both. I assume this requires more than a one-liner. Any suggestions?
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104 views

moving directories after grep

I have isseued the next command in order to move some directories to the "build_tools" folder however the result was not the one I expected. ls -l | grep 2014-03 | awk '{if ($8!=build_tools) print ...
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132 views

How to redirect ALL output from a command in Linux

I'm running Gentoo Linux. A program (equery) outputs a massive list of all the currently installed packages (equery list "*"). I want to find out which of them are unstable. Equery marks the unstable ...
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37 views

Find using Grep everywthing that starts with “country=” but not “country=US”

I'm running varnishlog | grep "country=" but I want to find all traffic not originating in US. I need something using OR and NOT .
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228 views

Tail and grep recursively?

Trying to tail though a list of domains to search for a hacker code. All the files that I'm looking for are the same so I was trying something like this: grep -rnl * -e "Ai9LbaFz7lC13SwzDxAYT72vwA" ...
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240 views

Search zipped *and* non-zipped files in one hit

I have a folder with a mix of zipped and unzipped log files which i want to search. I can search the non-zipped with grep -r "my-search-string" /path/to/folder and search the zipped files with ...
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79 views

editing string using sed or grep

first of all please execuse my ignorance on UNIX. I am quite new. I have lot many sql files that contains following string ${DB_USERNAME}.${TABLE_NAME} Can anyone please tell me how could I change ...
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3answers
34 views

How can I set grep to default to a certain filename pattern?

I work in python, so 95% or more of the time my grep search is grep "thing to find" *.py or something similar. I'm working in Windows 7, but being a unix guy, I am lazy with my keystrokes, so I ...
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1answer
580 views

Can grep in vim be made to be conditionally case sensitive?

When I do a in-document search with / or ? it only performs a case sensitive search when a capital letter appears in the search pattern because of the combination of the ignorecase and smartcase ...
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74 views

Is there a way to print 2 lines (if any) before and after a target or print a placeholder if not?

I'm not native english speaker so I hope to be clear. I know about grep -C 2 "TARGET" inputfile to select 2 rows before and after the row of the TARGET, but I'm not able to use it to manage my ...
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64 views

grep out condition and add the values of the grep value

I have a scenario that a csv file has the values of : abcd FAILURE 7 abcd SUCCESS 12 efgh SUCCESS 3 efgh FAILURE 5 mnop SUCCESS 6 mnop SUCCESS 4 abcd FAILURE 5 efgh SUCCESS 2 mnop SUCCESS 1 ...
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2k views

How do I pipe output to date -d “value”?

I have a date like "2014-01-30 05:04:27 GMT", and if I run date -d "2014-01-30 05:04:27 GMT", the output is in my server's timezone ("Thu Jan 30 16:04:27 EST 2014"). With the use of grep and cut, I ...
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68 views

Configure ack on a per-directory basis

My goal is to not have to always tell ack which directories to grep in a given project (if I don't, it's slow because it scans non-source folders as well). I've so far come up with puting an ...
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34 views

UWIN grep on windows, wildards failure

I have the UWIN unix tools, and I can't grep a whole dir full of files with *. grep term * gives grep: *: can not open [No such file or directory] whether in cmd.exe or powershell (I hate this ...
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1answer
759 views

grep the string lines from the file

csv file. 1,2,3,abc 2,3,4,def 3,4,5,abc 3,4,2,def 6,7,9,abc. I need to read that file and get the lines of file containing abc.
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Bash - Move those files that contain the string to directory

Task: Create script, that will take 2 arguments: 3.sh <directory> <destination> Search the files in <directory> for substring “moveme” in the file content Move those files that ...
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2k views

How to grep a line with a backslash at the end of the line?

I'm trying to grep a line with a backslash at the end of the line like: abc\ def ghij ... I hope it can grep the line "abc\". I tried the command below but they didn't work. grep -EHn "\\$" ...
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853 views

grep multiple lines with unique count and string

Sample.csv DSN1,abc,FAILURE,12,24,45 DSN1,def,FAILURE,12,78,65 DSN1,abc,FAILURE,12,24,45 DSN1,abc,FAILURE,12,24,45 DSN1,abc,FAILURE,12,24,45 DSN1,def,FAILURE,12,78,65 DSN1,abc,FAILURE,12,24,45 i ...
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122 views

grep next exact match in double quotes

I am trying to grep string and next string which is marked in double quotes. Its a .xml file and the content would be as below: <jvmEntries xmi:id="1183122130078" verboseModeClass="false" ...
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44 views

Finding files that are mostly NUL

I've got a hard drive copy that went bad where many files are of correct size but are completely filled with NUL (0x00) bytes. However, a couple of the files seem to have a couple KB of actual data. ...
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212 views

Look for many different strings in many different log files?

I have a list of files that have gone missing somewhere in our system at work. I also have a folder full of 41 log files adding up to 46 MB that hopefully have log entries pertaining to the missing ...