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Add a couple of examples.

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Obtained from:	OpenBSD
This commit is contained in:
joel 2013-03-16 22:53:38 +00:00
parent 4bbf2e81a6
commit 2c33737ccb
2 changed files with 26 additions and 2 deletions
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15
usr.bin/head/head.1
View File

@ -28,7 +28,7 @@
.\" @(#)head.1 8.1 (Berkeley) 6/6/93 .\" @(#)head.1 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd June 6, 1993 .Dd March 16, 2013
.Dt HEAD 1 .Dt HEAD 1
.Os .Os
.Sh NAME .Sh NAME
@ -57,6 +57,19 @@ where
is the name of the file. is the name of the file.
.Sh EXIT STATUS .Sh EXIT STATUS
.Ex -std .Ex -std
.Sh EXAMPLES
To display the first 500 lines of the file
.Ar foo :
.Pp
.Dl $ head -n 500 foo
.Pp
.Nm
can be used in conjunction with
.Xr tail 1
in the following way to, for example, display only line 500 from the file
.Ar foo :
.Pp
.Dl $ head -n 500 foo | tail -n 1
.Sh SEE ALSO .Sh SEE ALSO
.Xr tail 1 .Xr tail 1
.Sh HISTORY .Sh HISTORY

13
usr.bin/tail/tail.1
View File

@ -31,7 +31,7 @@
.\" @(#)tail.1 8.1 (Berkeley) 6/6/93 .\" @(#)tail.1 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd June 5, 2009 .Dd March 16, 2013
.Dt TAIL 1 .Dt TAIL 1
.Os .Os
.Sh NAME .Sh NAME
@ -147,6 +147,17 @@ is the name of the file unless
flag is specified. flag is specified.
.Sh EXIT STATUS .Sh EXIT STATUS
.Ex -std .Ex -std
.Sh EXAMPLES
To display the last 500 lines of the file
.Ar foo :
.Pp
.Dl $ tail -n 500 foo
.Pp
Keep
.Pa /var/log/messages
open, displaying to the standard output anything appended to the file:
.Pp
.Dl $ tail -f /var/log/messages
.Sh SEE ALSO .Sh SEE ALSO
.Xr cat 1 , .Xr cat 1 ,
.Xr head 1 , .Xr head 1 ,