Visit Our UNIX and Linux User Community

Top Forums Shell Programming and Scripting Regular Expression + Aritmetical Expression Post 11948 by Z0mby on Friday 14th of December 2001 01:22:55 PM
Old 12-14-2001
Lightbulb Regular Expression + Aritmetical Expression

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.


10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

regular expression

Hello All! I have a file thats something like this: ( a grep output) /path/of/file/! Commented text /path/of/file/ ! More Commented text I need to grep out those line from this file whose filename has ".abc" in the filename (anywhere in filename)... (3 Replies)
Discussion started by: ag79
3 Replies

2. Linux

Regular expression to extract "y" from "abc/x.y.z" .... i need regular expression

Regular expression to extract "y" from "abc/x.y.z" (2 Replies)
Discussion started by: rag84dec
2 Replies

3. UNIX for Dummies Questions & Answers

Regular expression help

HI All, I want to list a file with the below format : testfile_nnnnn.xxxx where n and x can be any digit 0-9. n repeats 5 times and x 4 times... I tried with something like below: ls -l testfile_/\{5\}/* to start with but its not working. Please could anyone help? Thanks D (1 Reply)
Discussion started by: deepakgang
1 Replies

4. Shell Programming and Scripting

Regular expression

Hi I have to extract the first field and the last %field of the following out put.. /home (/abc/def/bhd ) : 522328 total allocated Kb 319448 free allocated Kb ... (2 Replies)
Discussion started by: Harikrishna
2 Replies

5. Shell Programming and Scripting

regular expression (.*?)

hi all, i have a text file with below content ............................... ............................... ............................... ............................... %%Page: (4) 4 %%PageBoundingBox: 34 -30 584 831 %%BeginPageSetup %%BeginFeature: *PageSize A4 595 842... (7 Replies)
Discussion started by: uttamhoode
7 Replies

6. Shell Programming and Scripting

Regular expression Help

Hi What is the meaning of this in regular expression $k =~ s/^\s*//; Plz explain (3 Replies)
Discussion started by: Harikrishna
3 Replies

7. Shell Programming and Scripting

Integer expression expected: with regular expression

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

8. Shell Programming and Scripting

help in regular expression

<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

9. Programming

Perl: How to read from a file, do regular expression and then replace the found regular expression

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

sed: -e expression #1, char 0: no previous regular expression

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)

       re_comp, re_exec - regular expression handler

       char *re_comp(s)
       char *s;

       char *s;

       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.

       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)


Featured Tech Videos

All times are GMT -4. The time now is 06:33 PM.
Unix & Linux Forums Content Copyright 1993-2021. All Rights Reserved.
Privacy Policy