Reversing a file?

[Randal Schwartz]

In article <2283 at munnari.oz.au>, ok at cs (Richard O'Keefe) writes:
| In article <MONTNARO.89Oct2224215 at sprite.crd.ge.com>, montnaro at sprite.crd.ge.com (Skip Montanaro) writes:
| >Does somebody have an elegant shell script for reversing the lines of a file?
| In BSD systems:
| 	cat -n $* | sort -nr | sed -e 's/^.......//'
| In System V:
| 	pr -t -n6 $* | sort -nr | cut -f2-

In Perl, of course, it's

perl -e 'unshift(a,$_) while (<STDIN>); print @a;'

which works even when 'tail -r' (another solution in another post)
doesn't, provided you have the real/virtual memory to spare.

Just another Perl hacker,
-- 
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