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| author | jilles <jilles@FreeBSD.org> | 2014-01-26 21:19:33 +0000 |
|---|---|---|
| committer | jilles <jilles@FreeBSD.org> | 2014-01-26 21:19:33 +0000 |
| commit | 9b565c0250634c44a36639e518e7ca3ba7a88ebd (patch) | |
| tree | b13e00aabd499f2e76efcb8c8749c5884decc848 /bin/sh/sh.1 | |
| parent | 51348c881e5f79078f88a6d96345fa6b4798b378 (diff) | |
| download | FreeBSD-src-9b565c0250634c44a36639e518e7ca3ba7a88ebd.zip FreeBSD-src-9b565c0250634c44a36639e518e7ca3ba7a88ebd.tar.gz | |
sh: Allow aliases to force alias substitution on the following word.
If an alias's value ends with a space or tab, the next word is also
checked for aliases.
This is a POSIX feature. It is useful with utilities like command and
nohup (alias them to themselves followed by a space).
Diffstat (limited to 'bin/sh/sh.1')
| -rw-r--r-- | bin/sh/sh.1 | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/bin/sh/sh.1 b/bin/sh/sh.1 index dc1716c..fb8328c 100644 --- a/bin/sh/sh.1 +++ b/bin/sh/sh.1 @@ -32,7 +32,7 @@ .\" from: @(#)sh.1 8.6 (Berkeley) 5/4/95 .\" $FreeBSD$ .\" -.Dd January 3, 2014 +.Dd January 26, 2014 .Dt SH 1 .Os .Sh NAME @@ -533,6 +533,20 @@ would become .Pp .Dl "ls -F foobar" .Pp +Aliases are also recognized after an alias +whose value ends with a space or tab. +For example, if there is also an alias called +.Dq Li nohup +with the value +.Dq Li "nohup " , +then the input +.Pp +.Dl "nohup lf foobar" +.Pp +would become +.Pp +.Dl "nohup ls -F foobar" +.Pp Aliases provide a convenient way for naive users to create shorthands for commands without having to learn how to create functions with arguments. |
