diff options
Diffstat (limited to 'bin/cat/cat.1')
| -rw-r--r-- | bin/cat/cat.1 | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/bin/cat/cat.1 b/bin/cat/cat.1 index 4fdff3a..d4933b2 100644 --- a/bin/cat/cat.1 +++ b/bin/cat/cat.1 @@ -32,7 +32,7 @@ .\" @(#)cat.1 8.3 (Berkeley) 5/2/95 .\" $FreeBSD$ .\" -.Dd March 21, 2004 +.Dd Jaunary 29, 2013 .Dt CAT 1 .Os .Sh NAME @@ -40,7 +40,7 @@ .Nd concatenate and print files .Sh SYNOPSIS .Nm -.Op Fl benstuv +.Op Fl belnstuv .Op Ar .Sh DESCRIPTION The @@ -79,6 +79,16 @@ Display non-printing characters (see the option), and display a dollar sign .Pq Ql \&$ at the end of each line. +.It Fl l +Set an exclusive advisory lock on the standard output file descriptor. +This lock is set using +.Xr fcntl 2 +with the +.Dv F_SETLKW +command. +If the output file is already locked, +.Nm +will block until the lock is acquired. .It Fl n Number the output lines, starting at 1. .It Fl s @@ -160,6 +170,7 @@ operand. .Xr tail 1 , .Xr vis 1 , .Xr zcat 1 , +.Xr fcntl 2 , .Xr setbuf 3 .Rs .%A Rob Pike @@ -175,7 +186,7 @@ utility is compliant with the specification. .Pp The flags -.Op Fl benstv +.Op Fl belnstv are extensions to the specification. .Sh HISTORY A |
