Sponsored Content
Top Forums Shell Programming and Scripting Switching shells in UNIX Scripts Post 88986 by vino on Thursday 10th of November 2005 11:27:53 AM
Old 11-10-2005
I doubt you can switch the shell in the middle of a script.

Why do you want to switch ?

the shells have similiar constructs save for a few ones.

Anyway, you can compile the second part of the script as a new script which runs in bash and invoke that.

Code:
#! /bin/ksh
# commands 
# which 
# runs 
# in 
# the 
# ksh 
# shell
#
. ./script-that-requires-bash

where

script-that-requires-bash is

Code:
#! /bin/bash
# commands 
# which 
# runs 
# in 
# the 
# bash
# shell

If you export any variables in the ksh script, there is a chance that the inner script might not be able to see it. It depends on the way you invoke the ksh script.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Good Unix Shells ?

Hey Guys i am new to Unix and i have downlaoded Cygwin for Windows and deleted it. I was just wondering is there any good shells like that for windows that just as good thanks for your time ][ce (1 Reply)
Discussion started by: IceCold
1 Replies

2. UNIX for Dummies Questions & Answers

switching shells??

Hi How can i switch shells on linux and freebsd? i tried changing the passwd file and restarted the computer but i still get the same old shell. anybody has the answer? thanks (6 Replies)
Discussion started by: xNYx
6 Replies

3. UNIX for Dummies Questions & Answers

How to open multiple shells while the scripts keeps running.

Hello, I've tried for a while now to run a bash script that continues to the end, while opening new shells as needed. I've tried xterm -e "somecommand"; & xterm -e " somecommand"; I've also tried screen -S "somecommand"; & screen -S "somecommand"; All without any luck, they... (5 Replies)
Discussion started by: Closed_Socket
5 Replies

4. UNIX for Dummies Questions & Answers

Unix Kernel Switching?

How do I go about switching from one Kernel to another? I figure the process is somewhat like "compile -> remove old boot reference -> add new boot reference -> reboot/restart kernel"... but honestly I have no idea how to do this... I'm trying to test out a piece of software, but it only runs... (3 Replies)
Discussion started by: jjinno
3 Replies

5. Cybersecurity

Preventing switching shells

Hello, My firm has a requirement that everyone must use bash. Of course, there can be exceptions so I do not want to disable the other shells. But is there a way that I can prevent users from switching to another shell? Thank you. (5 Replies)
Discussion started by: danielf
5 Replies

6. Shell Programming and Scripting

Switching between shells

I don't know why, but it just isn't working how I want it to work. You might want to run it to see what I mean. Or you might be a genius (or just really good at unix) and know just by looking at it what the problem is. Have fun trying to figure this one out.:wall: (11 Replies)
Discussion started by: nowruzr
11 Replies

7. UNIX for Dummies Questions & Answers

shells and scripts

So in UNIX, I understand that there are several different shells you can be in: C, Bourne, Bourne Again, Korn, etc. I also know that you can write scripts for the shells, by assigning it by #!/bin/csh, or sh, etc. If I am working in the csh, do I have to write the script for the csh? Or can it... (1 Reply)
Discussion started by: bjstaff
1 Replies

8. Linux

Switching between Windows and UNIX

I have both UNIX and Windows on my system. While booting it asks for me to select an OS. Once I log in to an OS, then to log in to another OS, there is no direct method. I need to shutdown and again start to select another OS. May I know any method to directly switch between the two. (23 Replies)
Discussion started by: ravisingh
23 Replies

9. Programming

UNIX shells scripting

Can someone help by advising hw to built myself strong on logic building in UNIX shell scripting. I find it very difficult Sent from my iPhone using Tapatalk (4 Replies)
Discussion started by: Vijaykannan T
4 Replies

10. Shell Programming and Scripting

Switching from production to development envirornment in UNIX

I had a unix scripts in prod. I need to made changes in those scripts which I don't have the edit access. I need to move those scripts from prod to dev to edit. Please tell me how to switch from production to development, So that I can made changes in dev and again move those scripts to Prod. ... (3 Replies)
Discussion started by: Rajeswararao
3 Replies
exit(1)                                                            User Commands                                                           exit(1)

NAME
exit, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps SYNOPSIS
sh exit [n] return [n] csh exit [ ( expr )] goto label ksh *exit [n] *return [n] DESCRIPTION
sh exit will cause the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of the last command executed (an EOF will also cause the shell to exit.) return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command exe- cuted. csh exit will cause the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the expression expr. The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to jump to a label that occurs between a while or for built-in command and its corresponding end. ksh exit will cause the calling shell or shell script to exit with the exit status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file will also cause the shell to exit except for a shell which has the ignoreeof option (See set below) turned on. return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return is invoked while not in a function or a '.' script, then it is the same as an exit. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
break(1), csh(1), ksh(1), sh(1), attributes(5) SunOS 5.10 15 Apr 1994 exit(1)
All times are GMT -4. The time now is 06:26 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy