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Full Discussion: Shell advanced syntax?
Top Forums Shell Programming and Scripting Shell advanced syntax? Post 302463823 by alister on Monday 18th of October 2010 02:03:25 PM
Old 10-18-2010
A few alternatives:

Code:
if [[ -f /sunstudio12/bin/sunf90 ]]; then
    export IMDI_COMPILER=/sunstudio12/bin/sunf90
if [ $? -ne 0 ]; then
    echo "Please specify location!"
    exit
fi

...or...

Code:
if ! { [[ -f /sunstudio12/bin/sunf90 ]] && export IMDI_COMPILER=/sunstudio12/bin/sunf90; }; then
    echo "Please specify location!"
    exit
fi

...or...

Code:
if ! [[ -f /sunstudio12/bin/sunf90 ]] || ! export IMDI_COMPILER=/sunstudio12/bin/sunf90; then
    echo "Please specify location!"
    exit
fi

Regards,
Alister
These 3 Users Gave Thanks to alister For This Post:
 

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getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME
getusershell, setusershell, endusershell - get legal user shells SYNOPSIS
#include <unistd.h> char *getusershell(void); void setusershell(void); void endusershell(void); DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as defined by the system manager in the file /etc/shells. If /etc/shells does not exist, the following locations of the standard system shells are used in its place: /bin/bash /bin/csh /bin/jsh /bin/ksh /bin/pfcsh /bin/pfksh /bin/pfsh /bin/sh /bin/tcsh /bin/zsh /sbin/jsh /sbin/pfsh /sbin/sh /usr/bin/bash /usr/bin/csh /usr/bin/jsh /usr/bin/ksh /usr/bin/pfcsh /usr/bin/pfksh /usr/bin/pfsh /usr/bin/sh /usr/bin/tcsh /usr/bin/zsh /usr/xpg4/bin/sh The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells. The setusershell() function rewinds the file or the list. The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells. RETURN VALUES
The getusershell() function returns a null pointer on EOF. BUGS
All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved. SunOS 5.10 30 Aug 2004 getusershell(3C)
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