Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #926
Difficulty: Medium
On 05:20:00 UTC on Saturday, 24 January 2065, the Unix time value will equal 4000000000 seconds.
True or False?
Linux & Unix Commands - Search Man Pages

regex(3) [ultrix man page]

regex(3)						     Library Functions Manual							  regex(3)

Name
       re_comp, re_exec - regular expression handler

Syntax
       char *re_comp(s)
       char *s;

       re_exec(s)
       char *s;

Description
       The  subroutine	compiles  a string into an internal form suitable for pattern matching.  The subroutine checks the argument string against
       the last string passed to

       The subroutine returns 0 if the string s was compiled successfully; otherwise a string containing an  error  message  is  returned.  If	is
       passed 0 or a null string, it returns without changing the currently compiled regular expression.

       The  subroutine 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 and may have trailing or embedded newline characters; they are terminated by	nulls.	 The  regular  expressions
       recognized are described in the manual entry for given the above difference.

Diagnostics
       The subroutine returns -1 for an internal error.

       The subroutine returns one of the following strings if an error occurs:

       No previous regular expression
       Regular expression too long
       unmatched (
       missing ]
       too many () pairs
       unmatched )

See Also
       ed(1), ex(1), egrep(1), fgrep(1), grep(1)

																	  regex(3)

Check Out this Related Man Page

regex(3)						     Library Functions Manual							  regex(3)

Name
       re_comp, re_exec - regular expression handler

Syntax
       char *re_comp(s)
       char *s;

       re_exec(s)
       char *s;

Description
       The  subroutine	compiles  a string into an internal form suitable for pattern matching.  The subroutine checks the argument string against
       the last string passed to

       The subroutine returns 0 if the string s was compiled successfully; otherwise a string containing an  error  message  is  returned.  If	is
       passed 0 or a null string, it returns without changing the currently compiled regular expression.

       The  subroutine 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 and may have trailing or embedded newline characters; they are terminated by	nulls.	 The  regular  expressions
       recognized are described in the manual entry for given the above difference.

Diagnostics
       The subroutine returns -1 for an internal error.

       The subroutine returns one of the following strings if an error occurs:

       No previous regular expression
       Regular expression too long
       unmatched (
       missing ]
       too many () pairs
       unmatched )

See Also
       ed(1), ex(1), egrep(1), fgrep(1), grep(1)

																	  regex(3)

15 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Check if argument passed is an integers

How do I check if the argument passed to a script is an integer? I am writting a script that will take to integers and want to be able to check before I go on. I am using bourne shell. Thanks in advance (13 Replies)
Discussion started by: elchalateco
13 Replies

2. Shell Programming and Scripting

remove specific lines from a file

Hi there I have a file with a variable amount of rows but the 45th, 46th and 47th charachter of each line is the status field which is a three digit code ie 001, 002, 003 etc. My question is this..I need to strip all the records/lines with 002's out of the file completely and put them into... (14 Replies)
Discussion started by: hcclnoodles
14 Replies

3. Shell Programming and Scripting

How to grab data between 2 strings ?

Hi All, I have a text file below. How do i grab all the data between "05T00NPQSMR1" and "****" using awk ? Pls note that the text lines may not be fixed and text content is dynamic. Pls help. Thanks Below is my code where $LOT_SUFFIX is my shell variable. awk '/'"$LOT_SUFFIX"'/,/blah/'... (16 Replies)
Discussion started by: Raynon
16 Replies

4. Shell Programming and Scripting

Shell Problem

Hi all, until yesturday grep command was running in KSH .... I was executing this command ls -l | grep *.sh But today its not working at all ... Should I check any of the setting ... I am not getting whats the problem ... I have relogged to unix box but it didn't... (14 Replies)
Discussion started by: dhananjayk
14 Replies

5. Shell Programming and Scripting

Help with regular expressions

I have following content in the file CancelPolicyMultiLingual3=U|PC3|EN RestaurantInfoCode1=U|restID1|1 ..... I am trying to use following matching extression \|(+) to get this PC3|EN restID1|1 Obviously it does not work. Any ideas? (13 Replies)
Discussion started by: arushunter
13 Replies

6. Shell Programming and Scripting

Cut -d Question

I went through quite a few threads and didn't find anything on this. I also looked on other sites and couldn't turn up an answer. For completeness sake, I'm working off of solaris 10 in the korn shell environment. I wrote a script for a buddy to help him out with the following issue. He... (12 Replies)
Discussion started by: Janus
12 Replies

7. Programming

error: initializer expression list treated as compound expression

I had seen this error for the first time ..... error: initializer expression list treated as compound expression please help.... (12 Replies)
Discussion started by: arunchaudhary19
12 Replies

8. Shell Programming and Scripting

Search and replace

I have a script which has several occurences of statement like command: $UCMDPATH/xyz abc I would like to replace the entire line starting from $UCMDPATH with the ls -ltr command eg: Prior to change:: command: $UCMDPATH/xyz abc After change: command: ls -ltr Is there a way to do... (12 Replies)
Discussion started by: jobbyjoseph
12 Replies

9. UNIX for Dummies Questions & Answers

Question on Regular Expression

Folks; Could some one tell me what these 2 regular expressions mean: */(*)/* (\d\d\d\d/\d\d/\d\d/*?) (14 Replies)
Discussion started by: Katkota
14 Replies

10. UNIX for Dummies Questions & Answers

Create directories with regular expression

Hi guys, can any one tell me how to create directories using regular expression? Let's say that I need to create directories test01, test02, test03.... test10. Can it be done using any regular expression? thanks. (13 Replies)
Discussion started by: mahendrt
13 Replies

11. Shell Programming and Scripting

Replacing a character string in a file

Hi there, I have a paramater file that looks like this :- IRL|07122005|27389|VTIEpay|email address|5|200 When my program finishes I want to replace the seventh field. the existing code is like this cat <<-EOF | ed -s $PARFILE 1,$ g/^$ICO/s/$prvdate/$TODAY/ 1,$... (13 Replies)
Discussion started by: rjsha1
13 Replies

12. Shell Programming and Scripting

Regular expression (sed)

Hi I need to get text that are within "" For example File: asdasd "test test2" sadasds asdda asdasd "demo demo2" Output: test test2 demo demo2 Any help is good Thank you (12 Replies)
Discussion started by: blito_loco
12 Replies

13. Shell Programming and Scripting

AWK Script Issue insert newline for a regular expression match

Hi , I am having an issue with the Awk script to insert newline for a regular expression match Having a file like this FILE1 #################### RXOER , RXERA , RXERC , RXERD .RXEA(RXBSN), RXERD , REXCD input RXEGT buffer RXETRY ####################### Want to match the RXE... (38 Replies)
Discussion started by: jaita
38 Replies

14. Shell Programming and Scripting

String regular expression

Hi, temp="/usr=25,/usr/lib=12" How to get only dir names with out values. I tried like below but no use. tmp=${temp##*,} echo $tmp o/p: /usr/lib=12 expected o/p: /usr /usr/lib ---> in array (13 Replies)
Discussion started by: munna_dude
13 Replies

15. Shell Programming and Scripting

Extract the word from the file and print it

I have a file which I am reading and then I need to extract a particualr word and if it matches the line. 2015-01-22 07:30:17,814000 +0900 /INFO: - <ns2:virtualServerid="PH11PK" /> Means if the line contain Virtual server I need to extract the id . Code I wrote#!/usr/bin/perl ... (19 Replies)
Discussion started by: karan8810
19 Replies

Featured Tech Videos