06-14-2009
grep,egrep,fgrep
gerp Search a Pa tern from current directory.
egrep (grep -E in linux) is extended grep where additional regular expression metacharacters have been added like +, ?, | and ().
fgrep (grep -F in linux) is fixed or fast grep and behaves as grep but does not recognise any regular expression metacharacters as being special.
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How can I do an and condition with fgrep.
I want to do:
ps -ef | fgrep -f searchvalues > tempmail.file
mailx -s "Email Subject" email@domain.com < tempmail.file
The search values file contains:
opt/bea.*java.*80
mysqld
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Hi,
The input file "notifications" contains the following string.
FRTP has 149 missing batches
I want to search for :
FRTP has missing batches
As the number 149 is not important and will change.
The commands I have tried.
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Hi All,
Please i need to know the difference between grep, egrep & grep -i when used to serach through a file.
My platform is SunOS 5.9 & i'm using the korn shell.
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- divroro12 - (2 Replies)
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Hi,
I'm struggling a little here, so I figured it's time to ask for help.
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All,
I have a problem with grep/fgrep/egrep. Basically I am building a 200 times 200 correlation matrix. The entries of this matrix need to be retrieved from another very large matrix (~100G). I tried to use the grep/fgrep/egrep to locate each entry and put them into one file. It looks very... (1 Reply)
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So a few months ago, I decided to move away from using grep and decided to use egrep in this code that i'm writing.
i figured egrep is more robust than grep.
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Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
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I have a text file.
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The $ seems to fail for me. I'm using GNU grep 2.5.4 (that is, nothing out of the ordinary, just what came with my distro) but I can't get the final anchor $ to work for me. (^ works as usual.)
Behavior without anchor:
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tritium
tertium quid
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cat file
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I have a source file which is something like :
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XZGREP(1) XZ Utils XZGREP(1)
NAME
xzgrep - search compressed files for a regular expression
SYNOPSIS
xzgrep [grep_options] [-e] pattern file...
xzegrep ...
xzfgrep ...
lzgrep ...
lzegrep ...
lzfgrep ...
DESCRIPTION
xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options
specified are passed directly to grep(1).
If no file is specified, then the standard input is decompressed if necessary and fed to grep(1). When reading from standard input,
gzip(1) and bzip2(1) compressed files are not supported.
If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lze-
grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.
ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).
SEE ALSO
grep(1), xz(1), gzip(1), bzip2(1), zgrep(1)
Tukaani 2009-07-05 XZGREP(1)