On Jul 16, Rahul Garg said:
>1)I want to look out for a particular string in a file.
> Actually there is only one strng in each line of a file.
> How to search for it.............sample code........as i am new to syntax of perl
For just finding ONE string in ANOTHER string, the index() function is all
you need.
my $pos = index("jeffrey", "fre"); # 3
my $pos = index("jeffrey", "jeff"); # 0
my $pos = index("jeffrey", "free"); # -1
As you can see, the function returns -1 on failure. Please read the docs
for the function:
perldoc -f index
>2)I want to look out for a particular part(match) in a string in a file.
> Actually there is only one string in each line of a file.
You need to open the file, and go through it, line by line, executing the
index function on the line.
while (<FILE>) {
if (index($_, $word) > -1) {
# $word was found somewhere in $_
}
}
Learn how to work with files:
perldoc perlopentut
perldoc -f open
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