Deleting the data before character match

Question

How can I delete the characters before "/", including the "/", in a string using Perl or sed?

For instance, this:

ad9a91/FFFF0000

would turn into

FFFF0000

score 2 · Answer 1 · 2014-09-25T07:21:18.807

2

Sed solution

sed 's|[^/]*/||' file

Will remove everything up to and including the first /

or

sed 's|.*/||' file

Will remove everything up to and including the last / .

I added both as the question was not entirely clear on what the format of the string would be every time.

Awk

awk -F/ '{$0=$NF}1' file

This replaces the entire line with whatever is after the last /

edited Sep 25 '14 at 07:21

answered Sep 24 '14 at 14:07

You should explain the difference between the first and second version (the second version replaces all until the last slash, if there are several occurences of a slash in the line) – Casimir et Hippolyte Sep 24 '14 at 17:49
It's based on your sample (where no more word or char than what you show). first "remove" first char until first `/` and second like you write "remove" until last one. In this case it is the same effect, not if there are surround word/char but in this case both are false (but out of context also). – NeronLeVelu Sep 25 '14 at 05:50
1

@CasimiretHippolyte Added explanations :) – Sep 25 '14 at 07:21
thanks,also can u please tell me a sed command which deletes last 3 lines of a file – user3383729 Sep 25 '14 at 07:29
@user3383729 Post a new question or use the search function and you would find an answer. A quick search revealed http://stackoverflow.com/questions/13380607/how-to-use-sed-to-remove-last-n-lines-of-a-file – Sep 25 '14 at 07:40

mpapec · Answer 2 · 2014-09-24T13:38:36.943

1

You can use substitution,

my $str = "ad9a91/FFFF0000";
$str =~ s|^.+?/||;

or regex capture,

$str = $1 if $str =~ m|/(.+)|s;

edited Sep 24 '14 at 13:38

answered Sep 24 '14 at 13:09

mpapec

Jens · Answer 3 · 2014-09-24T13:23:38.930

0

Use substitution for this:

my $string = "ad9a91/FFFF0000";
$string =~ s|\.+/||;

edited Sep 24 '14 at 13:23

answered Sep 24 '14 at 13:09

Jens

but its not a single line there are multiple lines with random data after the '/' character – user3383729 Sep 24 '14 at 13:20
@user3383729 Sorry my fault. have upated my answer – Jens Sep 24 '14 at 13:24

score 0 · Answer 4 · answered Sep 25 '14 at 13:23

0

my $string = qq(sjdflksdjfsdj ad9a91/FFFF0000 slodjfsdf s);
$string =~ s{\b(\s).*?\b/}{$1}ig;
print $string;exit;

you can also try this split with any space or any tag.

answered Sep 25 '14 at 13:23

depsai

4 Answers4