GauCho has asked for the wisdom of the Perl Monks concerning the following question:
Hi All,
i have a problem with using sed in a perl script.
Requirement:
Read a csv file (file1) containing certain pattern, match the pattern in another text file (file2) and delete it where ever its occurring.
file1:
abc/def sde/dfg/htf
file2:
abc/def = 100 sde/dfg/htf = 230 dad/fry = 000
in the end only dad/fry = 000 should remain in file2.
I cannot install any package, so have to use the default perl options.
Since my file1 contains special character "/" , i have escaped it in my code.
my sed command is working fine if I try to run it without loop, i.e for one pattern only. As soon as I add it in loop, it fails.
my code:
my $var = "sde\\/dfg\\/htf"; `sed -i '/$var/d' ADT_DVEBMGS33_ldciadt`;
The above works fine.
i tried to encorporate in a loop
my $len = scalar @delete; for ( my $i = 0; $i <=$len; $i++){ my $first = $delete[$i]; chomp $first; $first =~ s:/:\\\\/:g; `sed -i "/$first/d" file2`; }
error
<c> sed: -e expression #1, char 10: extra characters after command sed: -e expression #1, char 0: no previous regular expression
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Replies are listed 'Best First'. | |
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Re: sed in perl
by Corion (Patriarch) on Nov 11, 2019 at 10:33 UTC | |
by GauCho (Initiate) on Nov 14, 2019 at 06:05 UTC | |
Re: sed in perl
by Anonymous Monk on Nov 11, 2019 at 10:40 UTC |
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