Question

Trying to change all the characters in goodStuff file to uppercase.

I want to use tr '[a-z]' '[A-Z]' but don't know how to do the rest.

Can you help?

Answer 1

Hey there!

You cannot modify the same file using tr command . But it is possible to store the output of this command in another file.For example:

$ tr "[a-z]" "[A-Z]" < goodStuff >output

This command uses goodStuff as input, and converts the characters from lowercase to uppercase.

or

$ cat goodStuff | tr "[a-z]" "[A-Z]" >output

This command reads the file using cat and then uses its output as the input for tr command then stores the output of tr command in output file

or

$tr "[:lower:]" "[:upper:]" < goodStuff>output

Please feel free to ask if you have any queries , in the comments.

Thumbs up appreciated:)