36 lines
919 B
Bash
36 lines
919 B
Bash
# (c) Copyright 2005 Mark Hobley
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#
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# This is free software. This file can be redistributed or modified
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# under the terms of version 1.2 of the GNU Free Documentation Licence
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# as published by the Free Software Foundation.
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#
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singleinstance ()
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{
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if [ -d $SRUNDIR ] ; then
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if [ -w $SRUNDIR ] ; then
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if [ -d $SRUNDIR/$APPNAME ] ; then
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echo "Process Already Running" >& 2
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return 221
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else
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mkdir $SRUNDIR/$APPNAME
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if [ "$?" -ne 0 ] ; then
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if [ -d $SRUNDIR/$APPNAME ] ; then
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echo "Process Already Running" >& 2
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return 221
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else
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echo "Unexpected Error" >& 2
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return 239
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fi
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fi
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return 0 ; # This is a unique instance
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fi
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else
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echo "Permission Denied" >& 2
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return 210
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fi
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else
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echo "Missing Directory" >& 2
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return 199
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fi
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}
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