Does anyone know how to use grep/egrep to find a string that contains a null character?
i.e.: the string looks like this: null0001nullN
well I want to be able to : grep '0001N'
is there a wildcard character or something that I can put in the grep to include the nulls? (3 Replies)
How can I grep for a certain letter that only shows on the 3rd letter or character.
ex:
ASGHDY
SHTYRD
SDTYRD
IGIKGD
I only want the TY part of the 3rd character
so output would only be SHTYRD and DDTYRD - I only want the TY on the 3rd character.
THANKS (5 Replies)
Hello people,
I am trying to grep out a certain pattern from some files. The situation is like this:
constantstring1<random data>constantstring2
I am using the following command (which clearly is not working!!!):
datestring=<some date in YYYYMMDD format>
searchstring=$datestring"*_xyz"
grep... (2 Replies)
All,
I am trying to grep "-----" from a test when i use this i am getting the below error. What is the reason for this ?????... How can i over come this
##) echo "----------------- test_sys_job -----------------" | grep "-----------------"
grep: illegal option -- -
grep: illegal... (6 Replies)
I am learning regex fundamentals on my own and when I try to use \w for characters (i.e. ), or \d for digits () it doesnt work even though I see in greps man page that \w should be the same as ]...
] and those types of syntactic character classes do work for me, its just the shorthand \w \W and... (4 Replies)
Hello , this is my first topic cause I need your little help:(
I got .txt file, and I want to find lines without letter 'a', so im writing:
grep "" list.txt (list.txt is the file of course)
and i have no idea why it's not working because it shows lines with a. (1 Reply)
Hi, so I have a file containing many repetitions of the pattern block displayed below:
>NM_13489075
ACGUGCUAGCUUAGCGA
AGCUAGCUGAUCGAUGC
ACGUAGCUAGCUGAUCG
GAUCGA
>NM_13489023
ACGUGCUAGCUUAGCGA
AGCUAGCUGAUCGAUGC
ACGUAGCUAGCUGAUCG
GAAGUC
I was wondering how to grep, for example, a... (5 Replies)
Hello,
Im trying check if character "æ" (alt+145) is included or not in some files. To do that I have written a scrip with vi that basically is a loop of all these compressed files and something like:
zcat $file | grep æ >> logtocheck.out ;
The problem is that æ is translated to something like... (3 Replies)
a='CASH$$A'
/usr/xpg4/bin/grep -F "$a" *.txt
It is not able to grep CASH$$A string as it contains special character $$.
I also tried with
/usr/xpg4/bin/grep -F '$a' *.txt
but still not working.
I have to assign CASH$$A to a variable and serach that variable..i dont want to search the... (8 Replies)
GZGREP(1) General Commands Manual GZGREP(1)NAME
gzgrep, gzegrep, gzfgrep - search possibly compressed files for a regular expression
SYNOPSIS
gzgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
gzgrep is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep. If no file is speci-
fied, 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 gzgrep is invoked as gzegrep or gzfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, gzgrep
uses it as the grep program to be invoked. For example:
for sh: GREP=fgrep gzgrep string files
for csh: (setenv GREP fgrep; gzgrep string files)
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO grep(1), egrep(1), fgrep(1), gzdiff(1), gzmore(1), gznew(1), gzforce(1), gzip(1), gzexe(1)ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWgzip |
+--------------------+-----------------+
|Interface Stability | External |
+--------------------+-----------------+
NOTES
Source for gzip is available in the SUNWgzipS package.
GZGREP(1)