File rotation without rename command

for i in {6..1} ; do for f in *.$i.gz ; do mv "$f" "${f/.$i.gz}".$((i+1)).gz 2> /dev/null ; done; done
Rotates log files with "gz"-extension in a directory for 7 days and enumerates the number in file name. i.e.: logfile.1.gz > logfile.2.gz I needed this line due to the limitations on AIX Unix systems which do not ship with the rename command.
Sample Output
neo@ubuntu:~/test$ ls
test.1.gz  test.4.gz
neo@ubuntu:~/test$ for i in {6..1} ; do for f in *.$i.gz ; do mv "$f" "${f/.$i.gz}".$((i+1)).gz 2> /dev/null ; done; done
neo@ubuntu:~/test$ ls
test.2.gz  test.5.gz

1
By: Neo23x0
2011-04-18 11:44:36
mv

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