Am 07.10.22 um 16:25 schrieb n952162:

Can anybody tell me how I can look at the official change history of
linux commands?

For example, the test(1) command used to have a regular-expression
parser built in.  No longer, and more surprising, there's no discussion
of its disappearance on the internet; that I can find, at any rate.

I'd to know when it disappeared and what discussions, by whom, preceded
that.

Sorry, I'm thinking of the expr(1) command.

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n952162 <[email protected]> writes:

Am 07.10.22 um 16:25 schrieb n952162:

Can anybody tell me how I can look at the official change history of
linux commands?

For example, the test(1) command used to have a regular-expression
parser built in.  No longer, and more surprising, there's no discussion
of its disappearance on the internet; that I can find, at any rate.

I'd to know when it disappeared and what discussions, by whom, preceded
that.

Sorry, I'm thinking of the expr(1) command.

The man pages (and source code) of old versions of UNIX can be found at

https://minnie.tuhs.org/cgi-bin/utree.pl

e.g. ("man 1 expr" from Jan 1992) https://minnie.tuhs.org/cgi-bin/utree.pl?file=V10/man/man1/expr.1

For more human readable output
$ cd tmp
$ cat > oldman.1
<copy and paste>
$ man ./oldman.1

--
Alan J. Wylie https://www.wylie.me.uk/

Dance like no-one's watching. / Encrypt like everyone is.
Security is inversely proportional to convenience

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