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Shell Programming and Scripting

reversing multiple lines

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# 1  
Old 10-07-2009
reversing multiple lines
Hi I want to reverse multiple lines from my file

eg of File1
Code:
3 4 5 6 7 8 9
a b c d e f g h

I am using this code to reverse lines but it can only work with one row
Code:
awk -F'\t' '{while (NF){printf("%s%s", $(NF--),!NF?"":FS)}}' File1 > File2

I want the file to look like this

Code:
9 8 7 6 5 4 3 
h g f e d c b a

How would I modify my awk line so it can reverse multiple rows

thanks
# 2  
Old 10-07-2009
Code:
nawk -F'\t' '{for(i=NF; i; i--) printf("%s%c", $i, (i-1)?FS:ORS)}' myFile

Last edited by vgersh99; 10-07-2009 at 06:44 PM..
# 3  
Old 10-08-2009
Code:
while read line; do echo $line|xargs -n1|tac|xargs; done <infile

or legibly:

Code:
while read line; do 
  echo $line | xargs -n1 | tac | xargs
done < infile > outfile



---------- Post updated at 03:34 PM ---------- Previous update was at 02:42 PM ----------

ksh/bash/sh code:
  1. while read line; do
  2.   revline=""
  3.   for i in $line; do
  4.     revline="$i $revline"
  5.   done
  6.   echo ${revline% }
  7. done < infile > outfile


---------- Post updated 10-08-09 at 03:19 AM ---------- Previous update was 10-07-09 at 03:34 PM ----------

Code:
rev infile > outfile

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