Shebang Post: 302236707

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Doubt in shebang line!!

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

2. Shell Programming and Scripting

Relacing the shebang line of a file

Can any one tell me how to replace a shebang line of a file using sed? Eg: If a file contains the following shebang line #!C:/InstantRails/ruby/bin/ruby I would like to replace it with #!/usr/local/bin/ruby The shebang line of the file can be obtained from the command cat...

3. Shell Programming and Scripting

Multiple shebang lines

*** EDIT: I found something close to my solution under an IIS 7 Module Handle.***** (Non-Homework question, simply an ease of use one) Odd question here and maybe its my newness to cgi/Perl, but is it possible to have 2 shebang lines? I write an test a ton of my homework code on my windows...

4. Shell Programming and Scripting

The Shebang!

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. But I am...

5. Shell Programming and Scripting

Hyphen char after shebang notation

Hi, I have a trivial question to ask, I am seeing in some shell scripts the '-' (hyphen) character following the first line of shell script (i.e) the shebang notation as follows: #!/bin/sh - #! /bin/bash - what does the hyphen signify? What will happen if it is not given explicitly?

6. Shell Programming and Scripting

Shebang

If i am not using #! in my script. By default where will be my script running?

7. Shell Programming and Scripting

csh shebang query

What does the "-f" mean in following interpreter code #!/bin/csh -f Thank you

8. Shell Programming and Scripting

Necessity of shebang line

Hi , I know about the shebang line in shell scripting. Just want to know whether is there any difference in execution of the program by keeping and not keeping the shebang line. Because without shebang line also the script is working. correct me if am wrong. Any help on this will be helpful

9. Shell Programming and Scripting

Scripts without shebang

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 ? Is it a good practice to create scripts (even ad-hoc ones) without shebang ?

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getusershell

getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME

       getusershell, setusershell, endusershell - get legal user shells

SYNOPSIS

       #include <unistd.h>

       char *getusershell(void);

       void setusershell(void);

       void endusershell(void);

DESCRIPTION

       The  getusershell()  function  returns  a  pointer  to  a  legal  user  shell  as defined by the system manager in the file /etc/shells. If
       /etc/shells does not exist, the following locations of the standard system shells are used in its place:

       /bin/bash		  /bin/csh
       /bin/jsh 		  /bin/ksh
       /bin/pfcsh		  /bin/pfksh
       /bin/pfsh		  /bin/sh
       /bin/tcsh		  /bin/zsh
       /sbin/jsh		  /sbin/pfsh
       /sbin/sh 		  /usr/bin/bash
       /usr/bin/csh		  /usr/bin/jsh
       /usr/bin/ksh		  /usr/bin/pfcsh
       /usr/bin/pfksh		  /usr/bin/pfsh
       /usr/bin/sh		  /usr/bin/tcsh
       /usr/bin/zsh		  /usr/xpg4/bin/sh

       The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells.

       The setusershell() function rewinds the file or the list.

       The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells.

RETURN VALUES

       The getusershell() function returns a null pointer on EOF.

BUGS

       All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved.

SunOS 5.10							    30 Aug 2004 						  getusershell(3C)