Here is my problem I'm hoping you guru's can help me figure out. I have a text file that contains comma delimited columns. What I'm looking to do is see if the 24th column on each row in the file contains a value (not null), and then write/append that line to a different file.
I've been... (4 Replies)
I have a text file with rows of information (it is basically a ls command information(o/p from ls command))
I need to remove the lines ending with a .cnt extension and keep the lines ending with .zip extension, how to accomplish this.
I also only need the date,size and name of the file from every... (2 Replies)
I am attempting to insert multiple lines of text into a specific place in a text file based on the lines above or below it.
For example, Here is a portion of a zone file.
IN NS ns1.domain.tld.
IN NS ns2.domain.tld.
IN ... (2 Replies)
I am trying to remove the lines listed in example File A from File B to achieve File C. Both files are much larger than the examples below. (File B has up to 6,000 lines).
I have searched the forums and I have not been able to find an answer to this particular question.
I tried
grep -v -f... (2 Replies)
Hello.
I'm writing a script where every file you create will generate a md5sum and store it into a text file.
Say I create 2 files, it'll look like this in the text file:
d41d8cd98f00b204e9800998ecf8427e /helloworld/saystheman
d41d8cd98f00b204e9800998ecf8427e /helloworld/test
I... (3 Replies)
Hi Everybody! First post! Totally noobie.
I'm using the terminal to read a poorly formatted book.
The text file contains, in the middle of paragraphs, hyphenation to split words that are supposed to be on multiple pages. It looks ve -- ry much like this.
I was hoping to use grep -v " -- "... (5 Replies)
GM,
I have an issue at work, which requires a simple solution. But, after multiple attempts, I have not been able to hit on the code needed.
I am assuming that sed, awk or even perl could do what I need.
I have an application that adds extra blank page feeds, for multiple reports, when... (7 Replies)
Hello Gurus,
I have a multiple pipe separated files which have records going over multiple Lines. End of line separator is \n and records going over multiple lines have <CR> as separator. below is example from one file.
1|ABC DEF|100|10
2|PQ
RS
T|200|20
3| UVWXYZ|300|30
4| GHIJKL|400|40... (7 Replies)
I have a file similar to the below. I am selecting only the paragraphs with @inlineifset.
I am using the following command
sed '/@inlineifset/,/^ *$/!d;
s/@inlineifset{mrg, @btpar{@//' $flnm >> $ofln
This produces
@section Correlations between
seismograms,,,,}}
... (5 Replies)
Discussion started by: Danette
5 Replies
LEARN ABOUT DEBIAN
text::trim
Text::Trim(3pm) User Contributed Perl Documentation Text::Trim(3pm)NAME
Text::Trim - remove leading and/or trailing whitespace from strings
VERSION
version 1.02
SYNOPSIS
use Text::Trim;
$text = " important data
";
$data = trim $text;
# now $data contains "important data" and $text is unchanged
# or:
trim $text; # work in-place, $text now contains "important data"
@lines = <STDIN>;
rtrim @lines; # remove trailing whitespace from all lines
# Alternatively:
@lines = rtrim <STDIN>;
# Or even:
while (<STDIN>) {
trim; # Change $_ in place
# ...
}
DESCRIPTION
This module provides functions for removing leading and/or trailing whitespace from strings. It is basically a wrapper around some simple
regexes with a flexible context-based interface.
EXPORTS
All functions are exported by default.
CONTEXT HANDLING
void context
Functions called in void context change their arguments in-place
trim(@strings); # All strings in @strings are trimmed in-place
ltrim($text); # remove leading whitespace on $text
rtrim; # remove trailing whitespace on $_
No changes are made to arguments in non-void contexts.
list context
Values passed in are changed and returned without affecting the originals.
@result = trim(@strings); # @strings is unchanged
@result = rtrim; # @result contains rtrimmed $_
($result) = ltrim(@strings); # like $result = ltrim($strings[0]);
scalar context
As list context but multiple arguments are stringified before being returned. Single arguments are unaffected. This means that under
these circumstances, the value of $" ($LIST_SEPARATOR) is used to join the values. If you don't want this, make sure you only use single
arguments when calling in scalar context.
@strings = (" hello
", " there
");
$trimmed = trim(@strings);
# $trimmed = "hello there"
local $" = ', ';
$trimmed = trim(@strings);
# Now $trimmed = "hello, there"
$trimmed = rtrim;
# $trimmed = $_ minus trailing whitespace
Undefined values
If any of the functions are called with undefined values, the behaviour is in general to pass them through unchanged. When stringifying a
list (calling in scalar context with multiple arguments) undefined elements are excluded, but if all elements are undefined then the return
value is also undefined.
$foo = trim(undef); # $foo is undefined
$foo = trim(undef, undef); # $foo is undefined
@foo = trim(undef, undef); # @foo contains 2 undefined values
trim(@foo) # @foo still contains 2 undefined values
$foo = trim('', undef); # $foo is ''
FUNCTIONS
trim
Removes leading and trailing whitespace from all arguments, or $_ if none are provided.
rtrim
Like trim() but removes only trailing (right) whitespace.
ltrim
Like trim() but removes only leading (left) whitespace.
UNICODE
Because this module is implemented using perl regular expressions, it is capable of recognising and removing unicode whitespace characters
(such as non-breaking spaces) from scalars with the utf8 flag on. See Encode for details about the utf8 flag.
Note that this only applies in the case of perl versions after 5.8.0 or so.
SEE ALSO
Brent B. Powers' String::Strip performs a similar function in XS.
AUTHOR
Matt Lawrence <mattlaw@cpan.org>
ACKNOWLEDGEMENTS
Terrence Brannon <metaperl@gmail.com> for bringing my attention to String::Strip and suggesting documentation changes.
perl v5.10.1 2010-06-07 Text::Trim(3pm)