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.Dd March 27, 2015
.Dt TAIL 1
.Os sbase
.Sh NAME
.Nm tail
.Nd display final lines of files
.Sh SYNOPSIS
.Nm
.Op Fl f
.Op Fl c Ar num | Fl n Ar num | Fl Ns Ar num
.Op Ar file ...
.Sh DESCRIPTION
.Nm
writes the last 10 lines of each
.Ar file
to stdout. If no
.Ar file
is given,
.Nm
reads from stdin.
.Sh OPTIONS
.Bl -tag -width Ds
.It Fl c Ar num | Fl n Ar num | Fl Ns Ar num
Display final
.Ar num
characters | lines |
lines. If
.Ar num
begins with '+'
it is an offset from the beginning of each
.Ar file .
If
.Ar num
begins with '-' it is as if no sign was given. The default is 10 lines.
.It Fl f
If one
.Ar file
is specified, append lines to output as
.Ar file
grows.
.El
.Sh SEE ALSO
.Xr head 1
.Sh STANDARDS
The
.Nm
utility is compliant with the
.St -p1003.1-2013
specification.
.Pp
The
.Op Fl Ns Ar num
syntax is an extension to that specification.