Ahem, this won't work in AIX either. The only place where you can skip the "$" and have the variable expanded anyway is inside double-brackets:
This is standard ksh and it will definitely work in Linux-ksh as well as in AIX-ksh.
Bakunin, it has just been tested: variables without a preceding $ work in AIX. It works with simple [ ].
We were really surprised about this because we never saw it before. But I am talking about hundreds of scripts written like this for a bank.
At the beginning we thouhgt those scripts didn't work, but after realising that there were hundreds we started to suspect that they actually worked that way.
This is part of the intricacies of the test command, and its peculiar ways.
Quote:
Originally Posted by bakunin
The rule is: the comparison will work, regardless if the variable is quoted or not. The problem one avoids with quoting variables is this: if the variable contains whitespace, the expanded variable will lead to a syntax error once it is expanded, because the shell treats the resulting expanded value as two (or more words):
You might want to do that because otherwise it would be misleading, but it is not required at all. The OS only cares for the shebang and the executable flag and whcih extension the file has doesn't matter at all.
I know that the only important thing is the shebang. Although it is only a visual matter, to me it looks like something unproperlly finished.. Anyone that sees those scripts without opening them will think that is ksh.
This is my point of view and I explain it like this: if I tell you that I have a friend and my friend's name is Pamela, what would you think? Is it a woman or a man? With the information you have, the name, you suppose that is a girl. I am sure you can "investigate" more and maybe is a boy, but someone with that name looks at first, a girl.
This case is the same, the name is information that could be used to make our life easier, to avoid the need to open the file if the name is self-explicative.
I understand your point though, but I would change the name as well.
I know it is going to be more difficult for the rest of the programs when they have to call the scripts...
Quote:
Originally Posted by bakunin
In AIX "/bin" is a link to "/usr/bin". This is one of my 7.1.3-testsystems:
The problem here is that in the scripts from AIX they used something like
so I had to change it into
Quote:
Originally Posted by bakunin
According to the POSIX documents this ("-n <number>") is the modern and suggested form and should be used anyway. If at all the old syntax is only supported for backwards compatibility purposes.
I hope this helps.
bakunin
In the latest version of RHEL it doesn't work without the -n option. I tested it myself.
hi all
i m working in a company ...and i have to migrate a C application running on SCO-UNIX to Red hat linux.
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best regards
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Hi All,
I am currently facing new problem of migrating C(c language) application from AIX machine to Linux machine. We are using GCC to compile the source code..
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