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document some more escapes which are hit by restricted mode,

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and move the documentation of which are relevant to the restricted mode
(-r) description;

from kris katterjohn

while here, replace some Gt/Lt escapes;
This commit is contained in:
jmc 2018-08-05 06:11:55 +00:00
parent 49b487211f
commit 0706d450f6
1 changed files with 19 additions and 13 deletions
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32
usr.bin/cu/cu.1
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@ -1,4 +1,4 @@
.\" $OpenBSD: cu.1,v 1.17 2017/12/10 07:34:38 jmc Exp $
.\" $OpenBSD: cu.1,v 1.18 2018/08/05 06:11:55 jmc Exp $
.\"
.\" Copyright (c) 1980, 1990, 1993
.\" The Regents of the University of California. All rights reserved.
@ -27,7 +27,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd $Mdocdate: December 10 2017 $
.Dd $Mdocdate: August 5 2018 $
.Dt CU 1
.Os
.Sh NAME
@ -76,7 +76,19 @@ devices by default.
Start
.Nm
in restricted mode.
This prevents all local filesystem operations and command executions.
This prevents all local filesystem operations
.Po
.Cm ~R ,
.Cm ~X ,
and
.Cm ~>
.Pc
and command executions
.Po
.Cm ~C
and
.Cm ~$
.Pc .
.It Fl s Ar speed | Fl Ar speed
Set the speed of the connection.
The default is 9600.
@ -108,7 +120,7 @@ following are recognized:
.It Ic ~^D No or Ic ~.
Drop the connection and exit.
Only the connection is dropped \(en the login session is not terminated.
.It Ic ~\*(Gt
.It Ic ~>
Copy file from local to remote.
.Nm
prompts for the name of a local file to transmit.
@ -119,7 +131,6 @@ process to the remote host.
The command string sent to the local
.Ux
system is processed by the shell.
This command is not allowed in restricted mode.
.It Ic ~#
Send a
.Dv BREAK
@ -134,25 +145,20 @@ such as XMODEM.
The child program will be run with the following arrangement of
file descriptors:
.Bd -literal -offset indent
0 \*(Lt-\*(Gt remote tty in
1 \*(Lt-\*(Gt remote tty out
2 \*(Lt-\*(Gt local tty stderr
0 <-> remote tty in
1 <-> remote tty out
2 <-> local tty stderr
.Ed
.Pp
This command is not allowed in restricted mode.
.It Ic ~D
Deassert the data terminal ready (DTR) line briefly.
This command is not allowed in restricted mode.
.It Ic ~R
Record all output from the remote system to a file.
If the given file already exists, it is appended to.
If no file is specified, any existing recording is stopped.
This command is not allowed in restricted mode.
.It Ic ~S
Change the speed of the connection.
.It Ic ~X
Send a file with the XMODEM protocol.
This command is not allowed in restricted mode.
.It Ic ~?
Get a summary of the tilde escapes.
.El