06-03-2011
Quote:
Originally Posted by
DGPickett
I do not think you need exec or full path for sh, and exec just saves a fork.
A fork can be a thing worth saving, but yes, it's not strictly necessary.
The full path for a shell is just a habit of mine.
That should have been
-s, pardon me. Don't know how I managed the mixup when I was doublechecking in man pages as I typed!
-s forces it to read from standard input, which makes it treat parameters as script parameters $1 $2 etc instead of file names. It's a very portable option which seems to have been inherited from ancient bourne into bash, dash, ash, zsh, csh, ksh, and beyond.
This User Gave Thanks to Corona688 For This Post:
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NAME
shells - shell database
SYNOPSIS
/etc/shells
DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.
A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines
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FILES
/etc/shells lists shells on system
SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)
SunOS 5.10 4 Jun 2001 shells(4)