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-rw-r--r--usr.bin/tar/bsdtar.120
1 files changed, 18 insertions, 2 deletions
diff --git a/usr.bin/tar/bsdtar.1 b/usr.bin/tar/bsdtar.1
index ab0ea59..7518a81 100644
--- a/usr.bin/tar/bsdtar.1
+++ b/usr.bin/tar/bsdtar.1
@@ -140,6 +140,9 @@ In c and r mode, this changes the directory before adding
the following files.
In x mode, change directories after opening the archive
but before extracting entries from the archive.
+.It Fl -check-links ( Fl W Cm check-links )
+(c and r modes only)
+Issue a warning message unless all links to each file are archived.
.It Fl -exclude Ar pattern ( Fl W Cm exclude Ns = Ns Ar pattern )
Do not process files or directories that match the
specified pattern.
@@ -220,8 +223,16 @@ All symbolic links will be followed.
Normally, symbolic links are archived as such.
With this option, the target of the link will be archived instead.
.It Fl l
-(c mode only)
-Issue a warning message unless all links to each file are archived.
+If
+.Ev POSIXLY_CORRECT
+is specified in the environment, this is a synonym for the
+.Fl -check-links
+option.
+Otherwise, an error will be displayed.
+Users who desire behavior compatible with GNU tar should use
+the
+.Fl -one-file-system
+option instead.
.It Fl m
(x mode only)
Do not extract modification time.
@@ -387,6 +398,11 @@ The locale to use.
See
.Xr environ 7
for more information.
+.It Ev POSIXLY_CORRECT
+If this environment variable is defined, the
+.Fl l
+option will be interpreted in accordance with
+.St -p1003.1-96 .
.It Ev TAPE
The default tape device.
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