Sponsored Content
Full Discussion: Scripts without shebang
Top Forums Shell Programming and Scripting Scripts without shebang Post 302694803 by kraljic on Friday 31st of August 2012 12:07:38 PM
Old 08-31-2012
Thank you Alister. Thanks everyone.

I have 4 quick questions:

Question 1.

According to Wikipedia /bin/sh means Bourne shell . Is that Right?

Shebang (Unix) - Wikipedia, the free encyclopedia


Question2.
So, in Solaris 10, RHEL Version5, version 6, AIX version 6, 7 , if i forget to add shebang to a script , will the script be executed using Bourne shell ?


Question3.
Regarding CarloM's post on sourcing . /path/to/script.sh
I have used sourcing only to set environmental variables in the current shell. Can sourcing be used to execute shell scripts as well?



Question4.
I have noticed that some people execute shell scripts by putting sh at the beginning like

Code:
sh /path/to/myscript.sh

I always execute shell scripts without the sh at the beginning.

Code:
/path/to/script.sh

Which is recommended ?
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Shebang

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 #!/bin/bash and #!/bin/sh? I have been using the latter (#!/bin/sh), and things have been working fine. But is that the correct one to use... (9 Replies)
Discussion started by: msb65
9 Replies

2. 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 (6 Replies)
Discussion started by: nohup
6 Replies

3. 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 Replies)
Discussion started by: linuxnewbe
3 Replies

4. 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... (1 Reply)
Discussion started by: sennex
1 Replies

5. 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... (7 Replies)
Discussion started by: dips_ag
7 Replies

6. 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? (2 Replies)
Discussion started by: royalibrahim
2 Replies

7. Shell Programming and Scripting

Shebang

If i am not using #! in my script. By default where will be my script running? (6 Replies)
Discussion started by: Kochu77
6 Replies

8. Shell Programming and Scripting

csh shebang query

What does the "-f" mean in following interpreter code #!/bin/csh -f Thank you (2 Replies)
Discussion started by: animesharma
2 Replies

9. 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 (5 Replies)
Discussion started by: rogerben
5 Replies
SYSLOGOUT(8)						      System Manager's Manual						      SYSLOGOUT(8)

NAME
syslogout - modular centralized shell logout mechanism DESCRIPTION
syslogout is a generic approach to enable centralized shell logout actions for all users of a given system in a modular and centralized way mostly aimed at avoiding work for lazy sysadmins. It has only been tested to work with the bash shell. It basically consists of the small /etc/syslogout shell script which invokes other small shell scripts having a .bash suffix which are con- tained in the /etc/syslogout.d/ directory. The system administrator can drop in any script he wants without any naming convention other than that the scripts need to have a .bash suffix to enable automagic sourcing by the /etc/syslogout script. For shell sessions, the contents of /etc/syslogout.d/" will be sourced by every user at logout if the following lines are present in his $HOME/.bash_logout: if [ -f /etc/syslogout ]; then . /etc/syslogout fi If used for X sessions it is advisable to include the former statement into the Xreset script of the X display manager instead to prevent that closing of an terminal emulator window yields unexpected results in your running X session if your X11 terminal emulator is using a login shell. Be sure then to run it under the user-id of the X session's user. See the example files in /usr/share/doc/syslogout/ for illustration. Users not wanting /etc/syslogout to be sourced for their environment can easily disable it's automatic mechanism. It can be disabled by simply creating an empty file called $HOME/.nosyslogout in the user's home directory using e.g. the touch(1) command. Any single configuration file in /etc/syslogout.d/ can simply be overridden by any user by creating a private $HOME/.syslogout.d/ directory which may contain a user's own version of any configuration file to be sourced instead of the system default. It's names have just to match exactly the system's default /etc/syslogout.d/ configuration files. Empty versions of these files contained in the $HOME/.syslo- gout.d/ directory automatically disable sourcing of the system wide version. Naturally, users can add and include their own private scripts to be automagically executed by /etc/syslogout at logout time. OPTIONS
There are no options other than those dictated by shell conventions. Anything is defined within the configuration scripts themselves. SEE ALSO
The README files and configuration examples contained in /usr/share/doc/syslogout/ and the manual page for bash(1), xdm(1x), xdm.options(5), and wdm(1x). Recommended further reading is everything related with shell programming. If you need a similar mechanism for executing code at login time check out the related package sysprofile(8) which is a very close compan- ion to syslogout. BUGS
syslogout in its current form is mainly restricted to bash(1) syntax. In fact it is actually a rather embarrassing quick and dirty hack than anything else - but it works. It serves the practical need to enable a centralized bash configuration until something better becomes available. Your constructive criticism in making this into something better" is very welcome. Before i forget to mention it: we take patches... ;-) AUTHOR
syslogout was developed by Paul Seelig <pseelig@debian.org> specifically for the Debian GNU/Linux system. Feel free to port it to and use it anywhere else under the conditions of either the GNU public license or the BSD license or both. Better yet, please help to make it into something more worthwhile than it currently is. SYSLOGOUT(8)
All times are GMT -4. The time now is 05:27 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy