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Shell Programming and Scripting

How to reverse output?

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# 1  
Old 01-12-2009
How to reverse output?
hi,
I have to reverse the command output like below:
output:

online
offline
disable
maintening
killed

How to reverse this output like:

killed
maintening
disable
offline
online

It should be ksh script.

Thanks very much!
a2156z
# 2  
Old 01-12-2009

Some systems have a command, tac, that does what you want. If not, you can do it with:

Code:
awk '{ x = $0 "\n" x } END { printf "%s", x }'

# 3  
Old 01-12-2009
hi,
I have found a way to share, welcome more comments for it.
output | /usr/bin/tail -r
a2156z
# 4  
Old 01-12-2009
Code:
$ printf "%s\n" 1 2 3 4 | tail -r
tail: invalid option -- r
Try `tail --help' for more information.

# 5  
Old 01-12-2009
try this
printf "%s\n" 1 2 3 4 >temp
tail -r temp
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