Tr

= tr = tr is a command for translating or deleting characters. It takes a stream of input on stdin and outputs the translated stream on stdout.

= Origin = Provided by the GNU Coreutils: man page

= Tips = tr can be used to remove characters from a stream using the -d option. tr -d '\015' < $FILE.dos > $FILE.unix user@computer:> echo "hello world" hello world user@computer:> echo "hello world"|hexdump -C 00000000 68 65 6c 6c 6f 20 77 6f  72 6c 64 0a              |hello world.| 0000000c user@computer:> echo "hello world"|tr -d '\n'|hexdump -C 00000000 68 65 6c 6c 6f 20 77 6f  72 6c 64                 |hello world| 0000000b user@computer:> echo "hello world" | tr -d '\n' hello worlduser@computer:>
 * Here's a quick way to convert a file with DOS end of lines (CR\LF) to UNIX end of lines:
 * Here's an example how to delete a line feed, e.g. behind an echo (note you can also use echo -n to suppress a linefeed behind an echo command)

ls -l | tr -s ' ' (this turns multiple spaces into one. see the cut page for a reason why this is useful)
 * Another handy trick is using tr to squeeze multiple characters into one, which is sometimes handy if you want to use cut to chop things up:

= See also = expand, unexpand

= External links =
 * tr man page