Convert 'a' to 'A' in a Shell-Script

[Rick Silverstein]

In article <888 at kivax.UUCP> koe at kivax.UUCP (Diana Koehler) writes:
>
>
>How can I convert "lowercase" characters in "uppercase" characters
>in a Shell-Script.
>f.e. convert all 'a' to 'A' ?
>(awk, sed ??)
>

/usr/bin/tr works well for me.  Use the syntax:  tr "[a-z]" "[A-Z]"
This reads from stdin and writes to stdout, mapping a to A, b to B, ...
and z to Z so 'echo hello | tr "[a-z]" "[A-Z]"' outputs HELLO.