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Full Discussion: Error in shell script when #!/bin/bash is used as shebang
Top Forums Shell Programming and Scripting Error in shell script when #!/bin/bash is used as shebang Post 302372609 by proactiveaditya on Wednesday 18th of November 2009 10:38:39 AM
Old 11-18-2009
Error in shell script when #!/bin/bash is used as shebang
Code:
#!/bin/ksh

echo -en "\033[1;32mEnter ACTIVATION KEY:\033[0m"
read ACTIVATION_KEY
case "$ACTIVATION_KEY" in +([a-z]|[A-Z]|[0-9]|'-'))
echo -e "\033[1;32mPatern Matched\033[0m"
;;
*)
echo -e "\033[1;32mYou seem to have entered wrong characters in both the earlier instances. Pattern matching failed\033[0m"
;;
esac

The above script works fine when the interpreter is ksh, but outputs the following error when #!/bin/bash is used as shebang:

Code:
test.sh: line 5: syntax error near unexpected token `('
test.sh: line 5: `case "$ACTIVATION_KEY" in +([a-z]|[A-Z]|[0-9]|'-'))'

 

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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)
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