Tr - Character Translation Utility
Translate, squeeze, or delete characters from standard input. Replaces specified characters with alternatives or removes them entirely.
Usage
tr-tool [options] <set1> [set2]
Common Uses
'a-z' 'A-Z': Convert lowercase to uppercase'\n' ' ': Replace newlines with spaces-d 'aeiou': Delete all vowels-s ' ': Squeeze repeated spaces
Examples
echo "hello" | tr-tool 'a-z' 'A-Z'
echo "foo bar" | tr-tool -d ' '
echo "hello world" | tr-tool -s ' '