07-04-2012
Quote:
Originally Posted by
Scrutinizer
It is not only bash, dash and Bourne shell do this too. It is also not specified by Posix, so ksh is the exception..
I agree with you. ksh is exceptional.
My post isn't intended to suggest that bash (or dash or bourne sh) violate the standard -- I'm aware that POSIX allows a shell to execute each component of a pipeline in either the current environment or a subshell (ksh is compliant in this respect); the post is merely a response to methyl's rumination on the popularity of the idiom, identifying one popular resource which promotes it.
In my opinion, the ksh approach makes life a little easier. But, if I depend on it in a script, I always explicitly require ksh in the shebang.
Regards,
Alister
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LEARN ABOUT LINUX
suspend
suspend(1) User Commands suspend(1)
NAME
suspend - shell built-in function to halt the current shell
SYNOPSIS
sh
suspend
csh
suspend
ksh
suspend
DESCRIPTION
sh
Stops the execution of the current shell (but not if it is the login shell).
csh
Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.
ksh
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ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)
SunOS 5.10 15 Apr 1994 suspend(1)