You could also try something like:
This does all of the processing using shell built-ins (no need to invoke cut or awk) and will work even if $centnam expands to a string containing multiple adjacent whitespace characters.
Hello and thx for reading this
I'm using sed to remove only the leading spaces in a file
bash-280R# cat foofile
some text
some text
some text
some text
some text
bash-280R#
bash-280R# sed 's/^ *//' foofile > foofile.use
bash-280R# cat foofile.use
some text
some text
some text... (6 Replies)
Dear All,
can you please advice how do i remove trailing and leading spaces from a pipe-delimited file using "tr" command
the below cmd, i tried removed all spaces
tr -d ' '<s1.txt>s2.txt1
Many thx
Suresh (5 Replies)
Hi Experts,
In a file tht i copied from the web , i am not able to remove the leading white spaces. I tried the below , none of them working . I opened the file through vi to check for the special characters if any , but no such characters found.
Your advice will be greatly appreciated.
sed... (5 Replies)
Hi All,
I have a vexing issue with leading spaces in file names. Basically, we're moving tons of data from our ancient afp file share to Box.com and Box forbids leading spaces in files or folders. The HFS file system seems to be perfectly fine with this, but almost all other Unix file systems... (1 Reply)
Hi,
I am trying to remove leading and trailing spaces from a file using awk but somehow I have not been able to do it.
Here is the data that I want to trim.
07/12/2017 15:55:00 |entinfdev |AD ping Time ms | .474| 1.41| .581|green |flat... (9 Replies)
OS : RHEL 6.7
Shell : bash
I am trying to remove the leading the spaces in the below file
$ cat pattern2.txt
hello1
hello2
hello3
hello4
Expected output is shown below.
$ cat pattern2.txt
hello1
hello2
hello3
hello4 (2 Replies)
Hi
I have variable named tablename. The value to tablename variable has leading and trailing white spaces. How to remove the leading and training white spaces and write the value of the tablename without space to a file using shell script. ( for e.g. tablename= yyy )
INPUT
... (10 Replies)
Hi,
At the moment, using Notepad++ to do a search and replace, manually section by section which is real painful. Yeah, so copying each section of the line of text and putting into a file and then search and replace, need at least 3-operations in Notepad++.
Here's hoping I will be able to... (1 Reply)
Discussion started by: newbie_01
1 Replies
LEARN ABOUT CENTOS
sort::versions
Versions(3) User Contributed Perl Documentation Versions(3)NAME
Sort::Versions - a perl 5 module for sorting of revision-like numbers
SYNOPSIS
use Sort::Versions;
@l = sort { versioncmp($a, $b) } qw( 1.2 1.2.0 1.2a.0 1.2.a 1.a 02.a );
...
use Sort::Versions;
print 'lower' if versioncmp('1.2', '1.2a') == -1;
...
use Sort::Versions;
%h = (1 => 'd', 2 => 'c', 3 => 'b', 4 => 'a');
@h = sort { versioncmp($h{$a}, $h{$b}) } keys %h;
DESCRIPTION
Sort::Versions allows easy sorting of mixed non-numeric and numeric strings, like the 'version numbers' that many shared library systems
and revision control packages use. This is quite useful if you are trying to deal with shared libraries. It can also be applied to
applications that intersperse variable-width numeric fields within text. Other applications can undoubtedly be found.
For an explanation of the algorithm, it's simplest to look at these examples:
1.1 < 1.2
1.1a < 1.2
1.1 < 1.1.1
1.1 < 1.1a
1.1.a < 1.1a
1 < a
a < b
1 < 2
1.1-3 < 1.1-4
1.1-5 < 1.1.6
More precisely (but less comprehensibly), the two strings are treated as subunits delimited by periods or hyphens. Each subunit can contain
any number of groups of digits or non-digits. If digit groups are being compared on both sides, a numeric comparison is used, otherwise a
ASCII ordering is used. A group or subgroup with more units will win if all comparisons are equal. A period binds digit groups together
more tightly than a hyphen.
Some packages use a different style of version numbering: a simple real number written as a decimal. Sort::Versions has limited support for
this style: when comparing two subunits which are both digit groups, if either subunit has a leading zero, then both are treated like
digits after a decimal point. So for example:
0002 < 1
1.06 < 1.5
This won't always work, because there won't always be a leading zero in real-number style version numbers. There is no way for
Sort::Versions to know which style was intended. But a lot of the time it will do the right thing. If you are making up version numbers,
the style with (possibly) more than one dot is the style to use.
USAGE
The function "versioncmp()" takes two arguments and compares them like "cmp". With perl 5.6 or later, you can also use this function
directly in sorting:
@l = sort versioncmp qw(1.1 1.2 1.0.3);
The function "versions()" can be used directly as a sort function even on perl 5.005 and earlier, but its use is deprecated.
AUTHOR
Ed Avis <ed@membled.com> and Matt Johnson <mwj99@doc.ic.ac.uk> for recent releases; the original author is Kenneth J. Albanowski
<kjahds@kjahds.com>. Thanks to Hack Kampbjorn and Slaven Rezic for patches and bug reports.
Copyright (c) 1996, Kenneth J. Albanowski. All rights reserved. This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
POD ERRORS
Hey! The above document had some coding errors, which are explained below:
Around line 141:
Non-ASCII character seen before =encoding in 'Kampbjorn'. Assuming UTF-8
perl v5.16.3 2003-08-24 Versions(3)