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Shell Programming and Scripting
Necessity of shebang line
Post 302649433 by Corona688 on Thursday 31st of May 2012 10:19:02 AM
05-31-2012
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Hi,
I am currently writing BASH shell scripts. I am using BASH on a Powerbook G4 running Leopard. Could somebody please explain the difference between
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Do we need to include the exclamatory mark in the shebang line??:confused:
What if we dont include it??:eek:
Actually what shebang line implies when we run a script??
shebang line--> #!/bin/ksh :p (6 Replies)
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*** EDIT: I found something close to my solution under an IIS 7 Module Handle.*****
(Non-Homework question, simply an ease of use one)
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Hi,
I always thought that #!/usr/bin/ksh means that the script would be executed in korn shell i.e. when we'll execute the script with this line as the very first line then the shell spawns a korn shell (in this case as we are using #!/usr/bin/ksh ) and the script gets executed.
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If i am not using #! in my script. By default where will be my script running? (6 Replies)
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What does the "-f" mean in following interpreter code
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I see lot of ad-hoc shell scripts in our servers which don't have a shebang at the beginning .
Does this mean that it will run on any shell ?
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Hello All,
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LEARN ABOUT DEBIAN
sg
SG(1) User Commands SG(1) NAME
sg - execute command as different group ID SYNOPSIS
sg [-] [group [-c ] command] DESCRIPTION
The sg command works similar to newgrp but accepts a command. The command will be executed with the /bin/sh shell. With most shells you may run sg from, you need to enclose multi-word commands in quotes. Another difference between newgrp and sg is that some shells treat newgrp specially, replacing themselves with a new instance of a shell that newgrp creates. This doesn't happen with sg, so upon exit from a sg command you are returned to your previous group ID. CONFIGURATION
The following configuration variables in /etc/login.defs change the behavior of this tool: SYSLOG_SG_ENAB (boolean) Enable "syslog" logging of sg activity. FILES
/etc/passwd User account information. /etc/shadow Secure user account information. /etc/group Group account information. /etc/gshadow Secure group account information. SEE ALSO
id(1), login(1), newgrp(1), su(1), gpasswd(1), group(5), gshadow(5). shadow-utils 4.1.5.1 05/25/2012 SG(1)