String Capitalization

echo "${STRING}" | tr '[A-Z]' '[a-z]' | awk '{print toupper(substr($0,1,1))substr($0,2);}'
Helpful when we want to do mass file renaming(especially mp3s).
Sample Output
$ (STRING="COmManDLinEfU"; echo "${STRING}" | tr '[A-Z]' '[a-z]' | awk '{print toupper(substr($0,1,1))substr($0,2);}')

By: mohan43u
2009-06-23 21:11:34

What Others Think

perl has uc, lc, ucfirst, etc. That's much more graceful than the awk there.
linuxrawkstar · 580 weeks and 5 days ago
@linuxrawkstar, Then you have somewhat bigger dependency(perl is bigger than awk).
BlockerT · 580 weeks and 5 days ago
Yeah but these days disk space is cheap. On debian lenny, the base perl package takes 12MB. In that package is the perl rename script 'prename' (usually rename is a symlink to this) which lets you specify a perl regex for file renaming. See 'man prename' for more.
bwoodacre · 580 weeks and 5 days ago
Isn't echo "${STRING}" | tr a-z A-Z enough to do that?
Josay · 580 weeks and 4 days ago
Nope. The toupper only capitalizes the first letter of the substr. toupper(substr($0,1,1))
arcarbut · 580 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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