07-26-2013
"Sometimes" is: sed and grep.
They use Unix RE or BRE.
Unlike egrep and awk: they use ERE.
Perl5 uses ERE plus own extensions.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I'm using sed to alter a parameter file used in another process. Basically, the file is a template containing a few variables which need to be replaced at runtime.
The problem is that using sed with filenames that contain the / character causes matches to fail.
eg:... (3 Replies)
Discussion started by: mfreemantle
3 Replies
2. Shell Programming and Scripting
I'm using sed to alter a parameter file used in another process. Basically, the file is a template containing a few variables which need to be replaced at runtime.
The problem is that using sed with filenames that contain the / character causes matches to fail.
I've tried doing an escaped... (2 Replies)
Discussion started by: mfreemantle
2 Replies
3. Shell Programming and Scripting
I'm trying to parse RichText to XML. I want to be able to capture everything between the '/par' tag in the RTF but not include the tag itself. So far all I have is this, '.*?\\par' but it leaves '\par' at the end of it. Any suggestions? (1 Reply)
Discussion started by: AresMedia
1 Replies
4. UNIX for Dummies Questions & Answers
I am trying to pass a regular expression variable from a simple script to sed
to remove entries from a text file
e.g.
a='aaaa bbbb cccc ...|...:'
then executing sed from the script
sed s'/"'$a"'//g <$FILE > $FILE"_"1
my output file is always the same as the input file !!
any... (1 Reply)
Discussion started by: Daniel234
1 Replies
5. Shell Programming and Scripting
Hi
Im trying to use sed to change some files which I'll describe here:
I want to use a regular expression to grab the <body> tag from a document. However, the <body> tag can look different so the regular expression used will take care of that and "include" all types of bodies, in example:... (4 Replies)
Discussion started by: hjalle
4 Replies
6. Shell Programming and Scripting
Ok, so I get that:
sed -n '/START/,/END/p' file
...will print every line from START to END inclusive, but I don't want to see START or END. Apart from the obious:
sed -n '/START/,/END/p' file | grep -v "START" | grep -v "END"
...is there a simpler way of doing this?
Thanks as always! (2 Replies)
Discussion started by: cs03dmj
2 Replies
7. UNIX for Advanced & Expert Users
I have a flat file with the following drug names
Nutropin AQ 20mg PEN Cart 2ml
Norditropin Cart 15mg/1.5ml
I have to extract digits that are before mg i.e 20 and 15 ; how to do this using regular expressions
Thanks
ram (1 Reply)
Discussion started by: ramky79
1 Replies
8. Shell Programming and Scripting
Hi,
I need to replace <field name="ID">1</field> with
<field name="STATION_ID">01</field> how can i do it? (3 Replies)
Discussion started by: noppeli
3 Replies
9. Shell Programming and Scripting
Hi,
There's a bug using JavaDoc that generates an error if a tag <a...> is found in a javadoc comment, which is not a HTML reference. For example this error is produced with generics. I want to insert an space between "<" and "a". Expression is able to find where this happens using find and grep: ... (6 Replies)
Discussion started by: AlbertGM
6 Replies
10. Shell Programming and Scripting
Linux 6.X environments (RHEL, Oracle Linux )
I could write basic shell scripts in bash.
In my spare time, I was planning to learn awk or sed to deal with regular expression tasks I have to deal with. But, I gather that python is gaining popularity these days and I came to know that python has a... (5 Replies)
Discussion started by: John K
5 Replies
LEARN ABOUT OPENDARWIN
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 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 zgrep is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, zgrep uses
it as the grep program to be invoked. For example:
for sh: GREP=fgrep zgrep string files
for csh: (setenv GREP fgrep; zgrep string files)
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO
grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1)
ZGREP(1)