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Rename files/directories so that the first letter is upper-case on OS X
# Assume you have a directory structure that looks something like this:
ls -alh /path/to/my/directory
drwxr-xr-x 38 jeffjohnson staff 1.2K Jul 18 11:07 ./
drwxr-xr-x 6 jeffjohnson staff 192B Jun 23 15:00 ../
drwxr-xr-x 10 jeffjohnson staff 320B Aug 28 2017 foo/
drwxr-xr-x 12 jeffjohnson staff 384B Dec 18 2017 bar/
drwxr-xr-x 11 jeffjohnson staff 352B Feb 26 2018 baz/
-rw-r--r-- 1 jeffjohnson staff 1.8M Aug 14 2017 some-update.sql
# list continues...
# For whatever reason, you need to update the directory names so the first letter is upper-case. The rename command is what's called for here.
# To do a dry run and see what the change will look like (without actually making the change), use the `rename` command with -n:
rename -n 's/./\U$&/' *
# Output of rename with -n:
foo renamed as Foo
bar renamed as Bar
baz renamed as Baz
some-update.sql renamed as Some-update.sql
# If you're satisfied with the preview, run the rename command without the -n:
rename 's/./\U$&/' *
# Examine the results:
ls -alh /path/to/my/directory
drwxr-xr-x 38 jeffjohnson staff 1.2K Jul 18 11:07 ./
drwxr-xr-x 6 jeffjohnson staff 192B Jun 23 15:00 ../
drwxr-xr-x 10 jeffjohnson staff 320B Aug 28 2017 Foo/
drwxr-xr-x 12 jeffjohnson staff 384B Dec 18 2017 Bar/
drwxr-xr-x 11 jeffjohnson staff 352B Feb 26 2018 Baz/
-rw-r--r-- 1 jeffjohnson staff 1.8M Aug 14 2017 Some-update.sql
# To change from upper-case to lower-case, use the following:
rename 's/./\l$&/' *
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