Many scripts have in them something like if [ $SAGE64 = "yes" -a $UNAME = "Darwin" ] ; then some code fi
Where the '-a' means 'AND'. The use of the '-a' option is deprecated by both by the 2004 http://www.opengroup.org/onlinepubs/009695399/utilities/test.html and 2008 http://www.opengroup.org/onlinepubs/9699919799/utilities/test.html POSIX standards. (Possibly earlier standards too). The above should be written as if [ $SAGE64 = "yes" ] && [ $UNAME = "Darwin" ] ; then CFLAGS = "$CFLAGS -m64" fi (Actually, this SAGE64 and Darwin is one bit of code I really dislike, but that is only an issue for portability to Solaris, nothing to do with the test.) Likewise, the -o option is too, so test expr1 -o expr2 should be replaced by test expr1 || test expr2 I'm not suggesting everyone convert all their scripts, but when writing them, it would be wise to bear that in mind. The rationale for preferring the && or || operator is explained in the documents I linked above. Dave -- To post to this group, send an email to [email protected] To unsubscribe from this group, send an email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
