06-09-2011
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant.
THX! (2 Replies)
Discussion started by: Z0mby
2 Replies
2. UNIX for Dummies Questions & Answers
how to list all text files except the files from 20070712:
abc_20070710_123.txt
abc_20070711_123.txt
abc_20070712_123.txt
ls *.txt | egrep"+_^20070710_+\.txt"
Any idea please!!
Andy (6 Replies)
Discussion started by: andy2000
6 Replies
3. Linux
Regular expression to extract "y" from "abc/x.y.z" (2 Replies)
Discussion started by: rag84dec
2 Replies
4. Shell Programming and Scripting
Hi there,
I have a line in a coded text from which the formtat is
DEF/AAA/AAA/AAA/AAA/AAA/AAA/AAA/AAA/AAA
where A equals a letter
but the fields after the DEF/ are optional. Which means the line could look like
DEF/AAA or
DEF/AAA/AAA etc etc
I am trying to a find regular... (8 Replies)
Discussion started by: sickboy
8 Replies
5. Shell Programming and Scripting
Hi, I have a small script which uses egrep and a set of regexes to validate an IP address, however, i want to make it so that if somebody puts a leading space in front of the IP address to be validated it will fail, so this is my script
#!/bin/bash
#function
ip_checker() {
result=$( echo... (4 Replies)
Discussion started by: hcclnoodles
4 Replies
6. Shell Programming and Scripting
CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error.
source $CA_VERSION_DATA
if * ]
then
echo "CA_RELESE $CA_RELEASE is invalid"
exit -1
fi
+ source /etc/ncgl/ca_version_data
++ CA_PRODUCT_ID=samxts
++ CA_RELEASE=6
++ CA_WEEK_NO=7
++... (3 Replies)
Discussion started by: ketkee1985
3 Replies
7. Shell Programming and Scripting
<ATTR name="ABCDEFGH" value=""/>
<ATTR name="HJYR" value=""/>
what would be the regular expression to match both the above strings...
Always end with value=""/>
always start with <ATTR name="
the ATTR name can be anything..
I need to use this with match() in awk.
Thanks.. (1 Reply)
Discussion started by: shekhar2010us
1 Replies
8. Shell Programming and Scripting
Could anyone of you please guide me on making correct regular expression to match the exact word or character
I have some numbers like 12345780 extn 1234
1234567 x 43545
13245678 Extn 454857
if * ]]; then
VAR3=`echo "$NUMBER" | nawk -F "*" '{print $1 $2}'`
... (4 Replies)
Discussion started by: nram_krishna@ya
4 Replies
9. Programming
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Discussion started by: jessy83
1 Replies
10. UNIX for Advanced & Expert Users
Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
problem_arr=(PRS111 PRS213 PRS234)
j=0
while } ]
do
k=`expr $j + 1`
sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt
---some operation goes... (11 Replies)
Discussion started by: InduInduIndu
11 Replies
REGEX(3) Library Functions Manual REGEX(3)
NAME
re_comp, re_exec - regular expression handler
SYNOPSIS
char *re_comp(s)
char *s;
re_exec(s)
char *s;
DESCRIPTION
Re_comp compiles a string into an internal form suitable for pattern matching. Re_exec checks the argument string against the last string
passed to re_comp.
Re_comp returns 0 if the string s was compiled successfully; otherwise a string containing an error message is returned. If re_comp is
passed 0 or a null string, it returns without changing the currently compiled regular expression.
Re_exec returns 1 if the string s matches the last compiled regular expression, 0 if the string s failed to match the last compiled regular
expression, and -1 if the compiled regular expression was invalid (indicating an internal error).
The strings passed to both re_comp and re_exec may have trailing or embedded newline characters; they are terminated by nulls. The regular
expressions recognized are described in the manual entry for ed(1), given the above difference.
SEE ALSO
ed(1), ex(1), egrep(1), fgrep(1), grep(1)
DIAGNOSTICS
Re_exec returns -1 for an internal error.
Re_comp returns one of the following strings if an error occurs:
No previous regular expression,
Regular expression too long,
unmatched (,
missing ],
too many () pairs,
unmatched ).
3rd Berkeley Distribution May 15, 1985 REGEX(3)