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Shell Programming and Scripting
Scripts without shebang
Post 302694367 by Peasant on Thursday 30th of August 2012 12:58:56 PM
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1. Shell Programming and Scripting
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)
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2. Shell Programming and Scripting
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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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
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The shebang line of the file can be obtained from the command
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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)
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)
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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.
But I am... (7 Replies)
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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)
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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
#!/bin/csh -f
Thank you (2 Replies)
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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)
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LEARN ABOUT OPENSOLARIS
shells
shells(4) File Formats shells(4) 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 which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list. Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1). FILES
/etc/shells list of shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.11 20 Nov 2007 shells(4)