diff options
Diffstat (limited to 'usr.bin/biff')
| -rw-r--r-- | usr.bin/biff/biff.1 | 7 | ||||
| -rw-r--r-- | usr.bin/biff/biff.c | 4 |
2 files changed, 10 insertions, 1 deletions
diff --git a/usr.bin/biff/biff.1 b/usr.bin/biff/biff.1 index 49d711d..4a5ca9c 100644 --- a/usr.bin/biff/biff.1 +++ b/usr.bin/biff/biff.1 @@ -47,6 +47,13 @@ The utility informs the system whether you want to be notified when mail arrives during the current terminal session. .Pp +Affected is the first terminal associated with the standard input, +standard output or standard error file descriptor, in that order. +Thus, it is possible to use the redirection facilities of a shell to +toggle the notification for other terminals than the one +.Nm +runs on. +.Pp The following options are available: .Bl -tag -width indent .It Cm n diff --git a/usr.bin/biff/biff.c b/usr.bin/biff/biff.c index 938914c..acfd10b 100644 --- a/usr.bin/biff/biff.c +++ b/usr.bin/biff/biff.c @@ -74,7 +74,9 @@ main(argc, argv) argc -= optind; argv += optind; - if ((name = ttyname(STDERR_FILENO)) == NULL) + if ((name = ttyname(STDIN_FILENO)) == NULL && + (name = ttyname(STDOUT_FILENO)) == NULL && + (name = ttyname(STDERR_FILENO)) == NULL) err(2, "unknown tty"); if (stat(name, &sb)) |
