G'day guys, first post so be gentle.
I need help with some code to work out if a variable (string) contains any integers. The valid variable (string) must contain only letters.
Also need to be able to work out if a variable contains only integers.
Any help greatly appreciated. (7 Replies)
hi,
How to check a given file for a string and if it's not found, exit out ofthe script?
e.g. a file Test123 is there whose header begins with #bt and trailer begins with #ed.
I have to check if the header and trailer matches as above and if not, exit out of the script.
How can we do it in... (2 Replies)
How to check if a string in contained in another string ?
Like
Whether the String "brown" is contained in
"A quick brown fox jumps over a lazy the dog" (1 Reply)
How could I check if a string variable contains at least (or only) 2 characters, and check and make sure that the string does not contain any numeric digits?...I need to know how to do this as simple as possible. and I am using the Ksh shell. Thanks. (1 Reply)
lets think str is a variable...how can i check it is pure alphabetic or not
for numeric checking i have used echo $str|grep -v ]
but the command echo $str|grep -v ] is not working (1 Reply)
Hi,
How do i check if there are any files present in the folder with some specific starting string.
For eg :- I have used this where Source_File is filename parameter.
if
then
return 2
fi
But in my case the source file name is not constant. The only constant thing is... (10 Replies)
I am parsing a file and I get differnt results everytime.
Sometimes I get 12s sometimes I get 54m and sometime 3h..
v1=12s or v1=54m or v1=3h
12s - 12 seconds
54m - 54 minutes
3h - 3 hour
I have to write a script in such a way that it whenever v1 is in minutes,
I should strip "m"... (14 Replies)
Hi ,
I have a file likeA-0044150|ABC/Frito/
A-0044150|GFHU
A-0150075|Bud Racing
A-0187811|Bud Light
A-0187811|RW&B signmaking
I Want the o/p likeA-0044150|ABC/Frito/,GFHU
A-0150075|Bud Racing
A-0187811|Bud Light,RW&B signmaking (2 Replies)
what is the purpose of below specially "-z" string checking, how?
pid=`ps ax |grep java`
if (3 Replies)
Discussion started by: learnbash
3 Replies
LEARN ABOUT MOJAVE
regexp::common::balanced5.18
Regexp::Common::balanced(3) User Contributed Perl Documentation Regexp::Common::balanced(3)NAME
Regexp::Common::balanced -- provide regexes for strings with balanced parenthesized delimiters or arbitrary delimiters.
SYNOPSIS
use Regexp::Common qw /balanced/;
while (<>) {
/$RE{balanced}{-parens=>'()'}/
and print q{balanced parentheses
};
}
DESCRIPTION
Please consult the manual of Regexp::Common for a general description of the works of this interface.
Do not use this module directly, but load it via Regexp::Common.
$RE{balanced}{-parens}
Returns a pattern that matches a string that starts with the nominated opening parenthesis or bracket, contains characters and properly
nested parenthesized subsequences, and ends in the matching parenthesis.
More than one type of parenthesis can be specified:
$RE{balanced}{-parens=>'(){}'}
in which case all specified parenthesis types must be correctly balanced within the string.
Since version 2013030901, $1 will always be set (to the entire matched substring), regardless whether "{-keep}" is used or not.
$RE{balanced}{-begin => "begin"}{-end => "end"}
Returns a pattern that matches a string that is properly balanced using the begin and end strings as start and end delimiters. Multiple
sets of begin and end strings can be given by separating them by "|"s (which can be escaped with a backslash).
qr/$RE{balanced}{-begin => "do|if|case"}{-end => "done|fi|esac"}/
will match properly balanced strings that either start with do and end with done, start with if and end with fi, or start with case and end
with esac.
If -end contains less cases than -begin, the last case of -end is repeated. If it contains more cases than -begin, the extra cases are
ignored. If either of -begin or -end isn't given, or is empty, -begin => '(' and -end => ')' are assumed.
Since version 2013030901, $1 will always be set (to the entire matched substring), regardless whether "{-keep}" is used or not.
Note
Since version 2013030901 the pattern will make of the recursive construct "(?-1)", instead of using the problematic "(??{ })" construct.
This fixes an problem that was introduced in the 5.17 development track. This also means the pattern is no longer available for Perls
older than 5.010.
SEE ALSO
Regexp::Common for a general description of how to use this interface.
AUTHOR
Damian Conway (damian@conway.org)
MAINTAINANCE
This package is maintained by Abigail (regexp-common@abigail.be).
BUGS AND IRRITATIONS
Bound to be plenty.
For a start, there are many common regexes missing. Send them in to regexp-common@abigail.be.
LICENSE and COPYRIGHT
This software is Copyright (c) 2001 - 2013, Damian Conway and Abigail.
This module is free software, and maybe used under any of the following licenses:
1) The Perl Artistic License. See the file COPYRIGHT.AL.
2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2.
3) The BSD Licence. See the file COPYRIGHT.BSD.
4) The MIT Licence. See the file COPYRIGHT.MIT.
perl v5.18.2 2013-03-09 Regexp::Common::balanced(3)