HP-UX Reference (11i v1 05/09) - 1 User Commands N-Z (vol 2)
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shl(1) shl(1)
toggle Change the status of the previous current layer to that of current layer.
unblock name [ name ... ]
For each name, do not block the output of the corresponding layer when it is not the
current layer. This is equivalent to setting the
stty-loblk option within the layer.
quit Exit shl. All layers are sent the
SIGHUP signal.
name Change the status of the layer referred to by name to that of current layer. Any unique
prefix is accepted.
WARNINGS
Commands
The behavior of the
block and unblock shl
commands is not guaranteed when the SHELL environ-
ment variable is set to
/usr/bin/csh (for csh(1)) or
/usr/bin/ksh (for ksh(1)), or when the shell
saves and restores the tty state (defined in termio(7)) before and after each command is invoked interac-
tively from that shell. For both
/usr/bin/csh and /usr/bin/ksh , the loblk or -loblk options
of
stty can be used from within the layer to block or unblock the output of that layer.
Ptydaemon
For shl to function properly, the ptydaemon process must be running on the system. If your system has
been installed with the Desktop HP-UX product, then ptydaemon will not be started by default. In order
to start this daemon, change PTYDAEMON_START
from a "0" to a "1" in the
/etc/rc.config.d/ptydaemon
file. The system must either be rebooted for this change to take
effect, or you can manually start this daemon by typing :
/usr/sbin/ptydaemon
Note that ptydaemon will also be disabled if the DesktopConfig.LITECONFIG fileset has been installed
on the system, or if the system administrator has previously run the
SAM utility and selected the Apply
Lite HP-UX Configuration Action
from within any of
SAM’s Kernel Configuration
screens.
DEPENDENCIES
Series 800
The login command is not currently supported.
FILES
$SHELL Variable containing path name of the shell to use (default is
/usr/bin/sh ).
SEE ALSO
sh(1), stty(1), ioctl(2), signal(5).
STANDARDS CONFORMANCE
shl: SVID2, SVID3, XPG2
HP-UX 11i Version 1: September 2005 − 2 − Hewlett-Packard Company Section 1−−923