How to convert inside some files upper Charater in lower character in linux

Question

I am under ubuntu and I would know how is possible to convert inside a directory and sub directory all the UPPER caracter in lower caracter.

Tk

ex

HEADING_TITLE = Administration
TABLE_HEADING_ADMINISTRATORS = Pseudonymes

become

heading_title = Administration
table_heading_administrators = Pseudonymes

@JNevill, the OP does not want to convert **all** the uppercase. — glenn jackman, Nov 03 '16 at 21:27
@glennjackman That's true based on the example, but based on OP's question " all the UPPER caracter in lower caracter."... — JNevill, Nov 03 '16 at 21:31

score 0 · Accepted Answer · answered Nov 03 '16 at 21:30

0

To lower-case the first sequence of non-blank characters, with sed:

sed 's/[^[:blank:]]\+/\L&/' file

heading_title = Administration
table_heading_administrators = Pseudonymes

answered Nov 03 '16 at 21:30

glenn jackman

I do that sed 's/[^[:blank:]]\+/\L&/' *.txt but it does'nt write inside the files. – Yoko Nov 03 '16 at 21:35
Right. You can read the `sed` man page, specifically about the `-i` option. – glenn jackman Nov 03 '16 at 21:37

1 Answers1