Sponsored Content
Full Discussion: PCRE string questions.
Top Forums Shell Programming and Scripting PCRE string questions. Post 302363186 by komputersman on Monday 19th of October 2009 04:25:03 PM
Old 10-19-2009
Awesome thank you...

4 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

...yet another string of awk/sed questions from a RegExp-Challenged luser %-\

Greetings all, ...here is yet another string of awk/sed questions from a RegExp-Challenged luser :eek: I'm looking to have sed/awk do some clean-up on routing tables and to that end, I would like to do the following: 1.) If a line contains the word "masks" or "subnets" prepend CR/LF to... (16 Replies)
Discussion started by: SteveB-in-LV
16 Replies

2. Programming

messy questions: how to convert a string into a int64 in linux

Recently I was stuck at 64bit questions in 32pc....... lots of unknown questions came up .... as mentioned : messy questions: how to convert a string into a int64 in linux i tried ll = atoll(string) but faild btw: ll is defined as : long long ll = 0; I print the return like this:... (2 Replies)
Discussion started by: macroideal
2 Replies

3. Shell Programming and Scripting

PCRE negative lookahead

I have read many tutorials and cannot get this to work. I need to use pcre (because that is what the library in the software we are using uses) and pcregrep everything except /home from the /etc/fstab pcregrep '(?!/home)' /etc/fstab It returns the entire fstab (This is on a RHEL5... (1 Reply)
Discussion started by: insania
1 Replies

4. UNIX for Advanced & Expert Users

Postfix - pcre

Hello. I need to test valid sender address. I have created a rule in main.cf : smtpd_sender_login_maps = pcre:/etc/postfix/sender_login_maps.pcre smtpd_sender_restrictions = reject_non_fqdn_sender, reject_unknown_sender_domain, reject_sender_login_mismatch THe file... (1 Reply)
Discussion started by: jcdole
1 Replies
while(n)						       Tcl Built-In Commands							  while(n)


while - Execute script repeatedly as long as a condition is met SYNOPSIS
while test body _________________________________________________________________ DESCRIPTION
The while command evaluates test as an expression (in the same way that expr evaluates its argument). The value of the expression must a proper boolean value; if it is a true value then body is executed by passing it to the Tcl interpreter. Once body has been executed then test is evaluated again, and the process repeats until eventually test evaluates to a false boolean value. Continue commands may be exe- cuted inside body to terminate the current iteration of the loop, and break commands may be executed inside body to cause immediate termi- nation of the while command. The while command always returns an empty string. Note: test should almost always be enclosed in braces. If not, variable substitutions will be made before the while command starts execut- ing, which means that variable changes made by the loop body will not be considered in the expression. This is likely to result in an infinite loop. If test is enclosed in braces, variable substitutions are delayed until the expression is evaluated (before each loop iter- ation), so changes in the variables will be visible. For an example, try the following script with and without the braces around $x<10: set x 0 while {$x<10} { puts "x is $x" incr x } SEE ALSO
break(n), continue(n), for(n), foreach(n) KEYWORDS
boolean value, loop, test, while Tcl while(n)

Featured Tech Videos

All times are GMT -4. The time now is 08:52 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy