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perl oneliner to cut the file

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# 1  
Old 01-25-2012
perl oneliner to cut the file
Hi
I have a file say text.txt and has data as below.

text.txt
-------
Code:
/abc/def/tom/hanks
/abc/def/al/pacino
/def/dgg/matt/damon

Now I have to cut the field 3 and field 4 treating / as delimiter and save in the same file. Below is the how the output should be in the same file.
I would appreciate if some one could provide me a perl onliner

text.txt
-------
Code:
tom/hanks
al/pacino
matt/damon

Thanks very much
Matt

Moderator's Comments:
Mod Comment Please use next time code tags for your code and data
Last edited by vbe; 01-25-2012 at 12:26 PM..
# 2  
Old 01-25-2012
Code:
$
$
$ cat test.txt
/abc/def/tom/hanks
/abc/def/al/pacino
/def/dgg/matt/damon
$
$
$ perl -lne 'print join "/", (split/\//)[3,4]' test.txt
tom/hanks
al/pacino
matt/damon
$
$ # or using regex
$
$ perl -plne 's|^(/\w+){2}/||' test.txt
tom/hanks
al/pacino
matt/damon
$
$ # For inline editing
$
$ perl -i.bak -pe 's|^(/\w+){2}/||' test.txt
$
$ cat test.txt
tom/hanks
al/pacino
matt/damon
$
$ # Original file is backed up as "test.txt.bak"
$ cat test.txt.bak
/abc/def/tom/hanks
/abc/def/al/pacino
/def/dgg/matt/damon
$
$

tyler_durden
Last edited by durden_tyler; 01-25-2012 at 01:38 PM..
This User Gave Thanks to durden_tyler For This Post:
jim mcnamara
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