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#!/usr/bin/perl
#

use strict;
use diagnostics;

my @data;
my @sorted_data;
my $csvfile = "details.csv";

open(FH, "<$csvfile") or die "Unable to open $csvfile.\n";
@data = <FH>;...

Take the input (let's say $input) and remove the letters it contains from the variable containing the word (i.e. $word = "cupcakes"):


$word =~ s/$input//g;

Hi.

Using an array:
#!/usr/bin/env bash

# @(#) s2 Demonstrate arrays and printing on one line.

# Utility functions: print-as-echo, print-line-with-visual-space, debug.
# export...

I would suggest you prefer strncat to strcat. strncat is the secure sister of strcat:



strncat - C++ Reference (http://www.cplusplus.com/reference/clibrary/cstring/strncat/)

usage of strncat...

Your buffer only has five bytes of space.

Writing beyond that is rampaging through stack space, overwriting every local variable behind it until it finds and corrupts your stack frame itself,...

Yes, I got it! Too much Vino over Christmas, I think :D

Anyway, this \s stuff doesn't work for me.

Perhaps change the "\s" to " \t" (space \t).

Your sed could also change, to:

sed...

You should quote the $username variable:


user_id=`awk -v val="$username" -F: '$1==val{print $3}' /etc/passwd`