CVS commit: src/usr.bin/env

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Sat Feb  8 10:30:22 UTC 2020

Modified Files:
        src/usr.bin/env: env.1 env.c

Log Message:
Implement env(1) -u

The option '-u name' causes removal of the name environment variable if
it is in the environment.  This is similar to the unset command in sh(1).
The value for name must not include the '=' character.

Add HISTORY section in the man page.

The -u argument is implemented by Linux, FreeBSD and Darwin.
The lack of -u in NetBSD is a cause for a frequent fallout in the LLVM
toolchain test-suite.


To generate a diff of this commit:
cvs rdiff -u -r1.12 -r1.13 src/usr.bin/env/env.1
cvs rdiff -u -r1.20 -r1.21 src/usr.bin/env/env.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.