* Tony Baldwin wrote on 2012-01-21 at 12:15 (-0500): > Why use $(command) instead of `command`? > Generally, I've always used $(command), but see scripts all > over using `command`, and wondered if there were advantages of > one over the other. It seems they give the same result, no?
Some do, some don't :-) See some curious examples on http://tldp.org/LDP/abs/html/commandsub.html For short, I think you should use $(...) and try to avoid `...`. Also keep in mind that in Debian /bin/sh -> dash ----------test1.sh---------- #!/bin/sh set -xv echo `echo \\` echo $(echo \\) ---------------------------- $ ./test1.sh <-------- same output as dash ./test1.sh echo `echo \\` + echo \ + echo \ \ <-------- Watch this... echo $(echo \\) + echo \ + echo \ \ $ bash ./test1.sh echo `echo \\` echo \ ++ echo + echo <-------- ...and this! echo $(echo \\) echo \\) echo \\ ++ echo '\' + echo '\' \ Mathias -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20120121180536.gb15...@gmx.org
