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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252 views

ag (the_silver_searcher) not searching entire file - does it have an implicit maximum input size?

I have a very large plain text file (multiple gigabytes in size) which I need to search for certain strings. When using grep, I get over 11,000 matches of a string but with ag I get roughly 1,500. The ...
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45 views

R: subset lines of a dataframe containing a string in another file

I would like to subset the lines of data frame 1 (df1) that contain a string from a column in data frame 2 (df2). The problem is that file1 will have multiple strings in the same column. I have tried ...
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1answer
71 views

Searching across multiple documents for common words

I have the lyrics to a song. (.txt) I also have lyrics to 50 other songs. I'm looking for a way to analyse/search those 50 song lyrics with the lyrics to the first song, and find which one of the ...
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1answer
169 views

How to make SlickEdit's search results look like Notepad++

I use "find in files" (grep) and the search results very often for navigating code. Currently I use both SlickEdit and Notepad++ at different times. Both applications do this "find in files" but ...
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1answer
444 views

How do I grep a string from files created within the last 5 hours?

I have a directory that is populated every 30 mins with a text file, each day I need to grep the line with "Quality data" on it but I only want to grep from the 10 most recent files. How can I tell ...
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1answer
75 views

Piping lines to repeat commands

If my grep operation returns a list of IDs like in the following, can I somehow feed/pipe each line to a commandline command's parameter?: 12345 84758 49549 .. Like for example with the above ...
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1answer
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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1answer
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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1answer
2k views

Using tee to pipe ls and grep output into tail command without a script

I have an issue running through log files. I'm looking to use ls to create a list of files in the log directory and grep to run through for the specific instances/times the file ran. I only want to ...
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1answer
18 views

How to grep a log file within a specific time period with string

I have a log file in this format: 2016-01-21 01:56:48,586 [http-nio-8320-exec-54] INFO config.web.login - Successful login. Username: XYZ, xxxxx How do I grep this file and get only the lines ...
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1answer
18 views

How to extract only a part of a string

I have a batch file using wget and grep that downloads a website, and then extracts the fallowing string from the source code. <p>11.59 €</p> As you can see, grep included the paragraph ...
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1answer
33 views

redirect ALL output from shell to a command to act as filter

How to redirect all std-output from bash to a command like 'grep' or 'sed' to filter the output and then write it to a file? This is what I want in principle: exec > >(cat | cat ...
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23 views

Pipe arguments into “open” command

I'm trying to open a large list of .xml files using the following command: ls | grep navigation-drawer-config- | open However, this doesn't work. From my understanding of piping, this should pipe ...
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1answer
16 views

How to grep in tail in several files

I need to tail several files, and most info from them i removing (using grep). Now mine output dirty with file names. How i can remove them? Short to problem: $ tail -F /log/rest_server*.log | egrep ...
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1answer
25 views

Save text from file between two given characters and save the output to file?

I have a file with the following kind of text: @ heading with some text the.actual.text.of.choice which.can.be.several.lines in.length.with.no.pattern + more.text.that.i.want.to ...
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1answer
61 views

How do I search for a string of text in all the files sitting inside folder and its subfolders?

I wish to use a grep search to find the string 'base64' in any/all php files in a folder (and its subfolders) saved on my mac's desktop. I'm not very experienced using the Terminal command line ...
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1answer
25 views

Awk eqivalent to grep -C <num>

I want to print 5 lines of context around each line that matches "foo" but not "foobar". I can do the match easily enough via <output> | awk '/foo/ && !/foobar/' but I can't figure out ...
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1answer
53 views

How to grep through HTML using GNU grep 2.12 and bash 4.2.37?

I've never used grep to parse HTML files, and am having the following problem: grep -Po "(?s)(<h2>.+?<!-- /endcontent -->)" input.html > output.html -bash: !--: event not found I ...
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1answer
49 views

How do I correctly return context from a gnuwin32 grep (grep in windows cmd)?

I want to return a line of context after the string I'm searching for as per grep --help Context control: -B, --before-context=NUM print NUM lines of leading context -A, --after-context=NUM ...
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1answer
64 views

Why is the Windows Explorer not able to find a UUID string in a list of text files?

I have a directory with all my PUtty log files. Now I would like to find the files containing a UUID. I know that the UUID is in one or more files. I tried it with Windows Explorer. I searched with ...
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1answer
29 views

Return / transform then return pattern with nulls

I'm using grep/sed to parse a large binary file full of nulls for some specific data. This is in a windows environment using gnuwin32. Assuming I had some to return some data from a binary file that ...
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1answer
159 views

Remove beginnings of email addresses from text using grep or sed

I have a text file with lines like the following: John Stevenson Johnnyboy34 john.stevenson@company.com 0320423\n Mike Anderson AndersMike mike@mikeltd.foo 0234234 How do I remove the "text" ...
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1answer
1k views

Remove grep's line number output in Redhat 5.9

I havent used RH 5.9 until now. I started with 6 but we have some 5.9 servers. The syntax with 5.9 is a bit different with some things. grep for example will output a number line before the actual ...
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1answer
68 views

searching large number of possible file names in large directory tree

I need to search a large directory tree for a large number of possible file names, i.e. I have an input file with a long list of strings that I need to find in the tree (or as below: print all those ...
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72 views

How to print absolute paths with git grep

I use the following grepcode command to recursively search a large number of git repositories. It prints the path of found files relative to the repository root, how can I print the absolute path of ...
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43 views

Breadth-first search with ack or grep

When I search e.g. my home directory with ack (or grep), I normally want to know where I set a specific option. Since most config files are really close to ~ it would considerably speed up ack if I ...
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54 views

How to ls -l file from output of grep

I was trying to run the following command: ls -lh `grep -E "^log4j.appender.File" /var/domains/*/servers/*/logs/log4j.properties | sed 's/.*=//g'` but it shows me error: ls: cannot access ...
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34 views

Change InDesign paragraph style based on previous paragraph’s style (with GREP?)

I am re-typesetting a book to be published in its second edition. I have inherited the InDesign files from the designer who set the original book, and there are certain things that lead me to believe ...
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37 views

Grep exit status not returning expected value

In file "WAP" word is there. When I am running grep command grep -i "WAP" filename. I am getting exit status 0. That is fine. But when I am searching for those words which they are not in file. I am ...
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46 views

Search text in zipped files and move them to other folder

Friends, On my Mac, I have 100s of zip files in a directory named Test. Let's assume I have files a.zip,b.zip,c.zip....... Now I want to grep all files for a text "searchText" and move the matching ...
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42 views

Non-deterministic behavior of Grep in conjunction with More

What would you expect to happen after this: for /l %i in (1,1,100) do @more some.bbl | grep a | md5sum Most probably, not this: ec3ecb76408d4225ff23a25d0596e00f *- 13cfd899b90b9cd7aedb406a785e8eac ...
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53 views

grep php output show more than grep query

I'm having an issue where php file | grep "query"'s output shows EVERYTHING, not just the grep'd output. EX: php /vagrant/code/test.php | grep "Do not show anything" Shows anything echo'd in the ...
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32 views

ack.pl tool and ack.pl flags + how to ignore files with S attr

I am using the ack.pl tool in order to search string or IP’s in files The official site of ack.pl is - http://beyondgrep.com/documentation/ Example of ack.pl CLI ( want to find the string ...
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10 views

zgrep not working at all on Mac OSX

I'm trying to search through log files which have been zipped up using zgrep. I can't seem to get zgrep to work on my Mac whereas zgrepping on CentOS works just fine. To ensure that I was not ...
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14 views

Oneliner to get the list of filenames which have last line (or line on position X) matching certain pattern?

How to get the list of filenames which have last line (or line on position X) matching certain pattern? We are looking for oneliner.
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45 views

Searching for a string with grep

I'm looking for a way to retrieve a dollar amount from a website using a combination of wget and grep. This is what I've got so far: wget http://csgobackpack.net/?nick=jotnova -q -O - | grep -o ...
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12 views

storing matched string in a variable in c shell

I am writing a csh script and I am new to C shell. I am using grep but I want to store the matched string in a variable and append it everytime there is a match. The code is somewhat like set ...
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36 views

Ping multiple domains from file and out only desired IP

Need bash script to ping multiple domains from file and output just domains with adress ip : 1.2.3.4 exemple (domains.txt): www.google.com support.mozilla.com stackexchange.com support.mozilla.com ...
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23 views

Making a simple web app to boolean search a text file?

I have a text file which contains around 10K lines of text. Pretty much basic sentences. I want to find a very simple way to have a web app that can to perform a simple boolean search (just the ...
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31 views

grep : how to do it as fast as possible

I have 30GB log files in .gz format. I'm using zgrep to search and calculate total number of user connection. What I do is to zgrep and take domain name from the first big .gz file, and search for ...
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16 views

How to diagnose command-line hang if looking at it with Process Explorer makes the hang stop?

It's a command-line hang, so you'd think it would be easy to diagnose. But I just can't figure out why 1 out of 25 times, certain scripts of mine hang. I'm sure it's something I've done. Typically, ...
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114 views

ag (silver searcher): ignoring specific text extensions

I want to use ag to search inside all text files in a directory for a given string, but excluding some extensions such as *.html. If I use both the -t/--all-text and --ignore "*.html" flags, the ...
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11 views

Mac OS X Find and Replace API

Are the Find and Replace operations under the Edit menu in Acrobat or Word simply a front end for the unix awk, sed or grep commands? Where can I find more information about what's going on underneath ...
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72 views

grep - Grepping several lines from Nmap output

My scan root@kali:~# nmap -Pn 5.2.167.13 Starting Nmap 6.47 ( http://nmap.org ) at 2015-07-07 14:33 EDT Nmap scan report for static-5-2-167-13.rdsnet.ro (5.2.167.13) Host is up (0.010s latency). Not ...
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99 views

Write error Broken pip - Kali - Python

I have a problem im trying to perform grepping over nmap scan saved text file using python code but i get this error: cut: the delimiter must be a singel character Try 'cut --help' for more ...
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173 views

how to grep exact pattern

I’ve tried several grep / egrep ideas with different options but none worked here. I’m trying to grep exact match of the pattern I’m looking in a log. For example I want only a pattern “ERROR” to get ...
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52 views

grep not matching patterns in scripted session

Asked this question on the Unix board and got slapped for it. Someone said this was the right place so hopefully that's right. We have a bunch of reports that run on a Linux server and I am trying to ...
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122 views

I broke grep, and I need it to work in order to configure X11 (XQuartz) to run Wireshark. How can I mend it?

This was an X-post from apple.se, now deleted there, since it hadn't attracted any sufficient help. I need to work with Wireshark for my Web Programming class, so any help will be most appreciated. ...
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194 views

cron job monitoring script

greeting of the day!!! please help me a situation, i am trying to develop a script which provides me details which my cron job is commented or stopped which job is running or scheduled. like we ...
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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. ...