egrep (or grep -E nowadays) takes an extended regular expression, not unix pattern matching and it is best to quote the expression to avoid interference from the shell.
So instead try:
The dot stands for "any character" and the asterisk behind it means zero times or more the preceding character or subexpression.
To get the literal meaning of the second dot it needs to be escaped with a backslash.
Last edited by Scrutinizer; 04-24-2015 at 12:36 AM..
This User Gave Thanks to Scrutinizer For This Post:
Hi,
i am using egrep -f. The file with the expressions is very big and if i make the file a lot smaller, it works fine. Only if i use the original file, witch has about 20.000 lines it doesn't seem to work. Is the file to big, or do i need more patience??
my command is:
egrep -f... (2 Replies)
Hi I've been searching google and have not found what egrep -c means. Does anyone know where I can get a cheat sheet or what that -c means?
thanks,
Linda (2 Replies)
Hi,
I don't understand what is the correct way of writing:
egrep -l '{$min,$max} $pattern' $filename
I tryed to search on google how to wtrite {$min, $max}, but I don't have success (7 Replies)
Hi there,
Im having some issues using egrep, I have a text file containing server logs:
the user imputs 2 arguments, which are error checked and made into $searchMonth $searchYear respectivley.
I then do the grep command:
egrep /$searchMonth/ $file | egrep /$searchYear: | wc -l
... (1 Reply)
Hi Guys,
we have a shell script which basically query the Database which retrieves huge data and use the data with "egrep" .
Now there is some data which contains characters like "abc)" and the same is used like below :
"egrep (.+\|GDPRAB16\|GDPR/11702 96 abc)\|$ temp.txt"
now while... (7 Replies)
I have a text file which has the content starting with "....."
Not able to filter out lines staring with "....."
Is there anything wrong with grep stagement ??
.....processing table 2 of 2
.....migration process started at 2012-10-04 05:00:28
.....estimated # of rows 169,830... (2 Replies)
Can anyone advise how to use grep to locate lines containing these patterns?
i) SIGSTOP or SIGTSIP
ii) SIGTTIN or SIGTTOU
iii) harris or harrison
Say the file contents are
$ cat reg_exp
SIGSTOP
SIGTSIP
SIGTTIN
SIGTTOU
harris
harrison
I tried using, but did not worked
$... (8 Replies)
Hi
I am trying to run CMD that combining EGREP and PERL in multiple files
cat *07:00.22-12-13.txt | egrep" NAME| perl -ne 'print if /^sid9/ .. /^!/' "
I need the see the NAME and the text from sid9 to !
how can I use the EGERP in parallel to the PERL ?
This is one file
Qqq... (2 Replies)
Discussion started by: sharong
2 Replies
LEARN ABOUT CENTOS
bzgrep
BZGREP(1) General Commands Manual BZGREP(1)NAME
bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression
SYNOPSIS
bzgrep [ grep_options ] [ -e ] pattern filename...
bzegrep [ egrep_options ] [ -e ] pattern filename...
bzfgrep [ fgrep_options ] [ -e ] pattern filename...
DESCRIPTION
Bzgrep is used to invoke the grep on bzip2-compressed files. All 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 bzgrep is invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, bzgrep
uses it as the grep program to be invoked. For example:
for sh: GREP=fgrep bzgrep string files
for csh: (setenv GREP fgrep; bzgrep string files)
AUTHOR
Charles Levert (charles@comm.polymtl.ca). Adapted to bzip2 by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.
SEE ALSO grep(1), egrep(1), fgrep(1), bzdiff(1), bzmore(1), bzless(1), bzip2(1)BZGREP(1)