-
rw-rw---- 1 abc mail 47048 Nov 30 13:23 dovecot.index
-rw-rw---- 1 abc mail 800488 Nov 30 15:34 dovecot.index.cache
-rw-rw---- 1 abc mail 28740 Nov 30 15:34 dovecot.index.log
-rw-rw---- 1 abc mail 42928 Nov 30 13:23 dovecot.index.log.2
-rw-rw---- 1 abc mail 72 Sep 25 09:35 dovecot.mailbox.log
-rw-rw---- 1 abc mail 124846 Nov 30 15:34 dovecot-uidlist
hard way (Centos 5):
for i in dove*; do mv -v "$i" "${i%}_old" ; done
simple way:
rename -v 's/$/_old/' dovecot*
-rw-rw---- 1 abc mail 800488 Nov 30 15:34 dovecot.index.cache_old
-rw-rw---- 1 abc mail 42928 Nov 30 13:23 dovecot.index.log.2_old
-rw-rw---- 1 abc mail 28740 Nov 30 15:34 dovecot.index.log_old
-rw-rw---- 1 abc mail 47048 Nov 30 13:23 dovecot.index_old
-rw-rw---- 1 abc mail 72 Sep 25 09:35 dovecot.mailbox.log_old
-rw-rw---- 1 abc mail 124846 Nov 30 15:34 dovecot-uidlist_old
another example extension renaming with for loop:
for f in *.html; do mv $f ${f%.html}.php; done