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How to reverse all columns of a file having some field separator?

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# 1  
Old 02-06-2013
How to reverse all columns of a file having some field separator?
Hello,

I have a file:
xandyandz
Code:
x & y & z
x*y*z*a

I require output as:
zandyandx
Code:
z & y & x
a*z*y*x

here all lines have different field seperator (and & * )based on that i want to reverse the column of a file.

Pl. help.
Last edited by Scrutinizer; 02-06-2013 at 04:12 AM.. Reason: code tags
# 2  
Old 02-06-2013
Code:
perl -F'' -lane 'print reverse @F' file

# 3  
Old 02-06-2013
Code:
rev file

# 4  
Old 02-06-2013
Both the codes are not fulfilling my requirement. Codes are reversing all the alphabets irrespective of field separator.

e.g. my file has
Code:
abc & def & ghi

required output :
Code:
ghi & def & abc

code output :
Code:
cba & fed & ihg

I need code for required output :
Code:
ghi & def & abc

Last edited by vgersh99; 02-06-2013 at 10:43 AM.. Reason: code tags, please!
# 5  
Old 02-06-2013
How many different field separators are you going to have? If that's unknown then it's pretty difficult. Or is there a pattern for field separators? Like field separators in your file are not alphabets and all the fields consist of only alphabets?
# 6  
Old 02-06-2013
Quote:
Originally Posted by nehashine
Both the codes are not fulfilling my requirement. Codes are reversing all the alphabets irrespective of field separator.
It seems your requirement has changed..
Quote:
e.g. my file has
Code:
abc & def & ghi

required output :
Code:
ghi & def & abc

code output :
Code:
cba & fed & ihg

I need code for required output :
Code:
ghi & def & abc

These are two different requirements. The second is actually fullfilled by rev. Which of the two are you looking for?
# 7  
Old 02-06-2013
Try:
Code:
awk -F'[^[:alpha:]]*' '{split($0,S,/[[:alpha:]]*/); s=j=x; for(i=NF; i>=1; i--) s=s S[++j] $i; print s}' file

This User Gave Thanks to Scrutinizer For This Post:
nehashine
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