-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Neil Bothwick wrote: > Note you can also nest commands when using $(), which you can't do with > backticks.
You can nest commands with ``, it's just less intuitive; each of the following are equivalent: echo $(echo $(echo $(echo $(echo foo)))) echo $(echo $(echo $(echo `echo foo`))) echo $(echo $(echo `echo \`echo foo\``)) echo $(echo `echo \`echo \\\`echo foo\\\`\``) echo `echo \`echo \\\`echo \\\\\\\`echo foo\\\\\\\`\\\`\`` Yes, that is a *lot* of backslashes in the last one, which is why no one nests that far with `` (personally, I always use $() instead of ``, but that's mainly because I switched my escape for GNU screen from ^A to `). - -- Jonathan -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkrOnkwACgkQOypDUo0oQOqo4QCaA5iPSgyefVeK/clv3Tmb4bZh QHcAnRbc/wufJ7NZlVfy7f3sACQm1ZoY =ewZb -----END PGP SIGNATURE-----
