.* - any character repeated 0 or more times - greedy - will consume ALL the character leading to the LAST non-underscore/non-dash char followed b dashORunderscore.
[-_] - followed by either a '-' or a '_' char
\([^-_][^-_]*\) - followed by a 'capture' of any character other then '-' or '_' repeater 0 or more times.
[-_] - followed by either a '-' or a '_' char
.* - any character repeated 0 or more times - greedy
\1 - replace the 'matched' string with the FIRST 'capture'
I know it might be a bit confusing reading the regEx expressions at times, but try to think 'pattern matching'....
I have to extract data from a text file which is huge in size >>10GB.
ie between two strings. If I do an ordinary sed it takes forever to come out. I was wondering if there was anyway to do the entire process in reverse and on finding the relevant string is there any way to break out of the... (5 Replies)
Hi,
I have a requirement to search for two words and grep all the lines between them. For e.g. :
$cat file.dat
abc,To,number
acd,To,cnz \* flexibile select *\
bcd,To,lla
anz,From,kln
app,From,lpz
I need to get all the lines between the lines cantaining word 'acd' and 'anz'.
the... (2 Replies)
Hi Everyone,
I have one a.txt:
a b 001 c
b b 002 c
c c, not 002 c
The output should be
001
002
002
If i use cut -f 3 -d' ', this does not work on the 3rd line, so i thought is any way to cut the field counting from the end? or any perl thing can do this?:confused:
... (3 Replies)
Hi, Guys. Please help me to find solution to this problem using shell scripting.
I have an INPUT file with 4 columns separated by tab. Each block of records is separated by -----
-----
Sample1 5402 6680 Pattern01
Sample2 2216 2368 Pattern02... (6 Replies)
Hi,
I've a situation where,
a=xxx.yyy.zzz.txt
EXTN=`echo $a | cut -d . -f2`
Using the above code it delimites and will return "yyy.zzz.txt" to EXTN. But i need to get only the extension "txt". so as per the above code it delimits in the first "." itself. Can anyone help how to do... (6 Replies)
I may be making this too hard on myself, but I'm trying to find a way that I can use a cut or awk string to always remove the last two delimited fields of a string.
Say I have
PackageName-U939393-8.2.3.4.s390x.rpm
But the s390x could be any string w/o periods in it, x8664 for example,... (9 Replies)
Hi am using unix aix
I have tried using awk but am getting only output = x ,its not incrementing next output
set -A var1 vv qa za
ct=0
i=3
while
do
var1=`echo ${var1}`
count=`awk ' NR==$i++ {print;exit}' ${.txt} | cut -c5 `
echo $count
let ct=ct+1
done (6 Replies)
I'm trying to reverse every even line in my file using the awk command below but it prints only the odd lines but nothing else:
$ awk '(NR % 2) {print}; !(NR % 2) {print | "rev";}' myfile
Any idea what I might have done wrong?
Thank you. (10 Replies)
Hi,
how to cut part of a string sing delimiter in reverse
input file
1,2,st-pa-tr-01,2,3,4,
2,3,ff-ht-05,6,7,8
how can i obtain strings till
st-pa-tr
ff-ht i.e cutting the last part og string -01 and -05
Thanks & Regards
Nivi
edit by bakunin: changed thread title (typo) (3 Replies)
Discussion started by: nivI
3 Replies
LEARN ABOUT FREEBSD
fnmatch
FNMATCH(3) BSD Library Functions Manual FNMATCH(3)NAME
fnmatch -- test whether a filename or pathname matches a shell-style pattern
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <fnmatch.h>
int
fnmatch(const char *pattern, const char *string, int flags);
DESCRIPTION
The fnmatch() function matches patterns according to the rules used by the shell. It checks the string specified by the string argument to
see if it matches the pattern specified by the pattern argument.
The flags argument modifies the interpretation of pattern and string. The value of flags is the bitwise inclusive OR of any of the following
constants, which are defined in the include file <fnmatch.h>.
FNM_NOESCAPE Normally, every occurrence of a backslash ('') followed by a character in pattern is replaced by that character. This is done
to negate any special meaning for the character. If the FNM_NOESCAPE flag is set, a backslash character is treated as an ordi-
nary character.
FNM_PATHNAME Slash characters in string must be explicitly matched by slashes in pattern. If this flag is not set, then slashes are treated
as regular characters.
FNM_PERIOD Leading periods in string must be explicitly matched by periods in pattern. If this flag is not set, then leading periods are
treated as regular characters. The definition of ``leading'' is related to the specification of FNM_PATHNAME. A period is
always ``leading'' if it is the first character in string. Additionally, if FNM_PATHNAME is set, a period is leading if it
immediately follows a slash.
FNM_LEADING_DIR
Ignore ``/*'' rest after successful pattern matching.
FNM_CASEFOLD Ignore case distinctions in both the pattern and the string.
RETURN VALUES
The fnmatch() function returns zero if string matches the pattern specified by pattern, otherwise, it returns the value FNM_NOMATCH.
SEE ALSO sh(1), glob(3), regex(3)STANDARDS
The current implementation of the fnmatch() function does not conform to IEEE Std 1003.2 (``POSIX.2''). Collating symbol expressions, equiv-
alence class expressions and character class expressions are not supported.
HISTORY
The fnmatch() function first appeared in 4.4BSD.
BUGS
The pattern '*' matches the empty string, even if FNM_PATHNAME is specified.
BSD July 18, 2004 BSD