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Top Forums Shell Programming and Scripting sh is a real file or just a link? Post 302470066 by jackliang on Tuesday 9th of November 2010 05:56:37 AM
Old 11-09-2010
sh is a real file or just a link?

Hi, I'm confused about sh. someone help me.Thanks!

Question:
1. sh is a real file or just a link to other shells suck as bash ksh, on Unix/Linux such as AIX HP-UX Solaris Redhat? How to find it out?
2. Does sh is the earliest shell on Unix?

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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 Stops the execution of the current shell (but not if it is the login shell). 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)
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