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Full Discussion: Switching between shells
Top Forums Shell Programming and Scripting Switching between shells Post 302520388 by nowruzr on Friday 6th of May 2011 08:43:18 PM
Old 05-06-2011
tcsh wasn't working, but now I think I got it working. for some reason I had to execute the file directly, just typing tcsh didn't work for me here is the new script.

Quote:
#!/bin/bash

Clear
echo ".-----------------------------------------------------------------."
echo "| |"
echo "| Please specify which Shell you want to switch to: |"
echo "| 1. Bash |"
echo "| 2. Korn Shell |"
echo "| 3. T Shell |"
echo "| |"
echo "'-----------------------------------------------------------------'"
echo " "
echo "Enter the number of your choice: "; read shell

case $shell in
1) echo "Starting Bash..."; sleep 2; clear; `bash`;;
2) echo "Starting shell..."; sleep 2; clear; `ksh`;;
3) echo "Starting T Shell..."; sleep 2; clear; exec /bin/tcsh -l;;
esac
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.10 3 Aug 1994 echo(1B)
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