Unix: rename files to lowercase

admin — Sun, 30 Jan 2011 14:44:20 +0000

It’s very simple to rename the files to lowercase/uppercase using awk:

Lowercase

ls -1rt | awk '{ printf("mv %s %s\n", $0, tolower($0)) | "sh" } END { close("sh") }'

Uppercase

ls -1rt | awk '{ printf("mv %s %s\n", $0, toupper($0)) | "sh" } END { close("sh") }'

Using pattern lists in Unix

admin — Sat, 12 Sep 2009 18:57:48 +0000

Here is the small reminder about the syntax of the “case” command and the usage of the pattern lists.

#!/bin/ksh
print -n "Please enter the line: "
read line

case "$line" in
?(dog|cat) ) print "zero or one occurrence of any pattern" ;;
*(low|high) ) print "zero or more occurrences of any pattern" ;;
@(duncan|methos) ) print "exactly one occurrence of any pattern" ;;
+(rudolph|blitzen) ) print "one or more occurrence of any pattern" ;;
!(grinch|babay) ) print "everything except patterns" ;;
-@([hH?]) ) print "Some help..." ;;
-v*(erbose) ) print "Some more words..." ;;
*) print "Something else..." ;;
esac

MemoSoup » case

Unix: rename files to lowercase

Using pattern lists in Unix