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Shell Programming and Scripting
How to grep only some part of character?
Post 302887152 by PikK45 on Thursday 6th of February 2014 02:27:39 AM
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1. UNIX for Dummies Questions & Answers
Hi,
Is it possible to grep only on a certain part of a file? Say I have file in.txt which contains below:
11/16 13:07:19.5436 --- ERROR 123 detected.
11/16 13:08:19.5436 --- Generating a <reading> event
11/16 13:08:19.7784 ---- Sending a <writing> event
11/16 14:08:37.4516 ---... (2 Replies)
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Hi,
In a file FILE, there is a line like this one
MOLECULE C2 H2
I want to extract "C2 H2". I can do it in two step in a script :
VARIABLE="`grep MOLECULE FILE`" # Assign "MOLECULE C2 H2"
VARIABLE=`echo ${VARIABLE/"MOLECULE "}` # Remove "MOLECULE ".
Then,
$echo $VARIABLE
gives
C2... (6 Replies)
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USER=USER
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Let's say I have those lines in a list X
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Hi,
I have a problem to use grep in my script .
If I want to grep the file for example : PTWO9089.txt
The code below works .
grep ^PONE
But, I dont know on how to grep the file like this 9066PTWO.txt
I'll try to use this code :
grep PTWO^ ,but it doesn't work.
For your info, the... (4 Replies)
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Hello All. I have an output file which contains the phrase "Total DFT Energy =" and then a number. This occurs many times in the output file, and what I want is to pipe the numbers (which are all different) to a file so I can plot them. How do I grep "Total DFT Energy =" and then get the numbers... (3 Replies)
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Hi,
Suppose,
DBconnection=jdbc: oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=x.x.x.x)(PORT=YYYY))(LOAD_BALANCE=yes)(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=project_db1)))
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<exp code="12556a" message="ok, fine4" displayMessage="jksdfj ksd" \>
<exp code="123456a" message="ok, 2fine" displayMessage="jksdfj ksd" \>
<exp code="12dfgda" message="1ok, fine" displayMessage="jksdfj ksd" \>
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9. Programming
Seems not very post about R language. Here is one: How to grep a sublist of a list like grep -f in unix? say I have a dataframe
ID v1 v2 v3
A 1 3 4
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C 7 8 9
D 1 3 4
E 1 3 3
F 2 4 5 and I only need
ID v1 v2 v3
A 1 3 4
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E 1 3 3
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Hi,
On AIX 7
I have :
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LEARN ABOUT HPUX
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)