letz say that my file has 7 records with only one field. So my file has:
11111111
000000000000000
1111
aaaabbbccc
1111111222000000
aaaaaaaa
zz
All i need is:
1. when the field has a repetition of the same instance(a-z or 0-9), i would consideer it to be invalid.... (1 Reply)
Hi all,
I have a file which contains 1000s of lines of text. I need to delete all lines with the words "Red" EXCEPT if the line also contains the word "GREEN"...
For example:
ThisIs some random text that should be red deleted
ThisIs some random text that should NOT be red deleted green
... (4 Replies)
hi,
I need to replace all these lines from my text file
123end
234end
324end
234end
989end
258end
924end
At the moment I know how to replace "end". But I want to replace the numbers before end as well. How can I do this ?
sed s/end/newWord/ myfile.txt newFile.txt
thanks (3 Replies)
Hello all,
I need to match the red expressions in the following lines :
MACRO_P+P-_scrambledServices_REM_PRC30.xml
MACRO_P+P-_scrambledServices_REM_RS636.xml
MACRO_P+P-_scrambledServices_REM_RS535.xml
and so on...
Can anyone give me a PERL regular expression to match those characters ?
... (5 Replies)
Dear all,
I have a simple issue on a perl regular expression. I want to get the characters in red from the next lines :
POWER_key
LEFT_key
RIGHT_key
OK_key
DOWN_key
and so on...
Thanks in advance for reply.
Ludo (1 Reply)
Could you help me with this please. This regular expression seems to match for the wrong input
#!/usr/bin/perl
my $inputtext = "W1a$%XXX";
if($inputtext =~ m/+X+/)
{
print "matches\n";
}
The problem seems to be %. if inputtext is W1a$XXX, the regex doesnot match.... (5 Replies)
I am completely new to perl programming. My father is helping me learn said programming language. However, I am stuck on one of the assignments he has given me, and I can't find very much help with it via google, either because I have a tiny attention span, or because I can be very very dense.
... (4 Replies)
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)
Hi ,
I have the below array
my @actionText = ("delivered to governor on 21/23/3345" , "deliver jllj" , "ram 2345/43");
When i am trying to grep the contents of array and if mathced substituting with the digitis or some date format from the element like below
my @action = grep { $_ =~... (7 Replies)
Discussion started by: ragilla
7 Replies
LEARN ABOUT ULTRIX
regex
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 Alsoed(1), ex(1), egrep(1), fgrep(1), grep(1)regex(3)