grep patterns

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1. Shell Programming and Scripting

Grep for Multiple patterns

Hi All, I have a file. I need to find multiple patterns in a row and need those rows to divert to new file. I tried using grep -e / -E / -F options as given in man. But its not working. ==> cat testgrep.txt william,fernandes,xxxxx mark,morsov,yyyy yy=,xx= yyyy=,xxxx== ==>...

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Searching patterns in 1 file and deleting all lines with those patterns in 2nd file

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grep value between two patterns

Hi All, I've been trying solve this with a simple command but not having much luck. I have a file like this: Line 1: random_description 123/alert/high random_description2 356/alert/slow Line 2: random_description3 654/alert/medium Line 3: random_description4 234/alert/critical I'm...

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Grep - various patterns

I have a file with the following text: grep \$ grep \\$ grep \\\$ grep '\$' grep '\'$' grep \\ grep \\\\ grep "\$" grep '"$' grep "$" When I perform these same commands on this file, the result are never what I would expect them to be. Could someone please comment on the results and...

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Using perl to grep a list of patterns from an input file

I have been struggling to grep a file of NGrams (basically clusters of consonants or Consonant and Vowel) acting as a pattern file from an Input file which contains a long list of words, one word per line. The script would do two things: Firstly read a text pattern from a large file of such...

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Using grep to select specific patterns in text file?

How do I use grep to select words that start with I or O, end in box, and contain at least one letter in between them? the text file mailinfo.txt contains Inbox the Inbox Is a match box Doesn't match INBOX Outbox Outbox1 InbOX Ibox I box If the command works correctly it...

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Bash - Find files excluding file patterns and subfolder patterns

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How to iterate Grep via all patterns provided in an input file?

When I use the following grep command with options -F and -f, its just displaying the text related to only the last pattern. Command: $ grep -f pattern_file.txt input_file.txt Output: doc-C2-16354 Even the following command yields the same output: Command: $ grep -Ff pattern_file.txt...

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Grep multiple patterns(file) and replace whole line

I am able to grep multiple patterns which stored in a files. However, how could we replace the whole line with either the pattern or new string? For example: pattern_file: *Info in the () is not part of the pattern file. They are the intended name to replace the whole line after the pattern...

LEARN ABOUT POSIX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep for Multiple patterns

Discussion started by: WillImm123

2. Shell Programming and Scripting

Searching patterns in 1 file and deleting all lines with those patterns in 2nd file

Discussion started by: toms

3. Shell Programming and Scripting

grep value between two patterns

Discussion started by: joe19

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Grep - various patterns

Discussion started by: uran101

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Using perl to grep a list of patterns from an input file

Discussion started by: gimley

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Grep patterns

Discussion started by: navsan420