The following small script simply does a file name replacement. One place where it is useful is when I have a bunch of log files with fully qualified names but then change the server hostname to not be fully qualified and I want all stardard historical information.
#!/bin/ksh
## usage: transtr "Initial String" "Final String" [run]
##
## This command simply transforms a string with the
## default sed substitution. You must include
## 'run' in the third field for it to execute, otherwise it
## simply returns the two strings. You could actually
## not specify run and pipe the two fields into another
## command if necessary.
##
if [[ $1 == "" ]]
then
grep "^##" $0 | cut -c 3-
exit
fi
while read STRING
do
NEW=`echo $STRING | sed "s/$1/$2/g"`
echo $STRING $NEW
if [[ $3 == "run" ]]
then
mv $STRING $NEW
fi
done
Script started on Tue 02 Aug 2011 10:33:28 AM CDT # ls 20110707_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110708_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110709_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110710_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110711_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110712_05_french-roast.deadlycoffee.com_aixbase.sbstats # ls | transtr ".deadlycoffee.com" "" 20110707_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110707_05_french-roast_aixbase.sbstats 20110708_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110708_05_french-roast_aixbase.sbstats 20110709_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110709_05_french-roast_aixbase.sbstats 20110710_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110710_05_french-roast_aixbase.sbstats 20110711_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110711_05_french-roast_aixbase.sbstats 20110712_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110712_05_french-roast_aixbase.sbstats # ls | transtr ".deadlycoffee.com" "" run 20110707_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110707_05_french-roast_aixbase.sbstats 20110708_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110708_05_french-roast_aixbase.sbstats 20110709_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110709_05_french-roast_aixbase.sbstats 20110710_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110710_05_french-roast_aixbase.sbstats 20110711_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110711_05_french-roast_aixbase.sbstats 20110712_05_french-roast.deadlycoffee.com_aixbase.sbstats 20110712_05_french-roast_aixbase.sbstats # ls | transtr ".deadlycoffee.com" "" run # ls 20110707_05_french-roast_aixbase.sbstats 20110708_05_french-roast_aixbase.sbstats 20110709_05_french-roast_aixbase.sbstats 20110710_05_french-roast_aixbase.sbstats 20110711_05_french-roast_aixbase.sbstats 20110712_05_french-roast_aixbase.sbstats 20110713_05_french-roast_aixbase.sbstats 20110714_05_french-roast_aixbase.sbstats 20110715_05_french-roast_aixbase.sbstats # exit exit Script done on Tue 02 Aug 2011 10:34:13 AM CDT