Justin Clift writes:
i.e. if [ -x $self_path/postmaster ] [ -x $self_path/psql ];
then
or
if [[ -x $self_path/postmaster -x $self_path/psql ]]; then
I don't think the second one is a valid expression. ;-)
Maybe you were wondering about [[ ]] vs [] -- In Autoconf [] are the quote
Sorry guys,
I didn't realise I actually sent this, it was part of an email I was
putting together to achieve consistency in the scripts, but I thought I
cancelled it when it got late in the morning.
My apologies.
Regards and best wishes,
Justin Clift
Bruce Momjian wrote:
Hi all,
Hi all,
Reading through the script files again, there seems to be several
different methods of doing the same thing :
i.e. if [ -x $self_path/postmaster ] [ -x $self_path/psql ];
then
or
if [[ -x $self_path/postmaster -x $self_path/psql ]]; then
if [ x$foo = x ]; then
or
if [ $op =
Justin == Justin Clift [EMAIL PROTECTED] writes:
Justin if [ x$foo = x ]; then
Justin or
Justin if [ $op = ]; then
Justin or
Justin if [ $foo ]; then
I'm not the slightest bit a shell expert, but why not :-
if [ -z $foo ]; then
Is this POSIX/SUS2/whatever ?
Justin Clift wrote:
if [ x$foo = x ]; then
This is the safest way. It prevents problems when $foo begins with with a
-
I don't know about your first question, though.
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