Mainly focus on files that use BSD 3-Clause license.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.
Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
Also add $FreeBSD$ to a few files to keep svn happy.
Discussed with: imp, rwatson
- Don't assume environment variable HOME is not NULL.
o Integrate standards compliance from NetBSD.
- Allow -- before the command.
- Blocking SIGQUIT isn't standards compliant.
- Proper exit(3) levels.
- Actually append to nohup.out (as documented and required
by standard) instead of clobbering it.
o Remove some FreeBSD specific access(2) cruft (relating to
incorrect appending).
o Document the fact that two or more instances of nohup can
append to the same file.
o Constify; Staticize functions; Set WARNS?=2
Reviewed by: bde
Approved by: des
Obtained from: NetBSD, OpenBSD
MFC after: 9 days
