Create a process
object from the command name and arguments. The process is not yet
started. Processes are started using process->open.
The first argument is used to set process<-name.
A vector created from the remaining arguments is stored in process<-arguments.
Note that the command, nor the arguments are interpreted (like the
Unix shell does). The call
new(P, process('awk -f script.awk')).
will search for a file names awk -f script.awk, which of
course it can't find. Instead, use
new(P, process(awk, '-f', 'script.awk')).
or
new(P, process('/bin/sh', '-c', 'awk -f script.awk')).
- See also
- - process
->open
- process-name
Send a signal to the process (which must be running). The argument is
either the number of the Unix signal (see man sigvec) or the name of the
signal (see also man sigvec). To convert the name used in the sigvec
manual page, delete the leading SIG and convert the remainder to
lowercase. Examples:
SIGTERM ==> term
SIGINT ==> int
SIGHUP ==> hup
- See also
- process
->killed
Start the process. When the first argument is given, the command name
and argument vector will be set like process->initialise.
If the process is already running, nothing happens.
When process<->use_tty
equals @on, a
pseudo-tty is allocated, the PCE forks a new process, connecting
standard (error) I/O to this pseudo-terminal. If process<-environment
is given, the environment of the child is manipulated accordingly. If process<-directory
is given the child will change working directory. Finally the child
execvp's (see man execvp()) using the
process<-name
and process<-arguments
from the process
object.
When process<->use_tty
equals @off,
two pipes are created, after which PCE forks. stdin of the process is
associated with one of these pipes, stdout and stderror with the other.
The command is started the same way as with process<->use_tty @on.
- See also
- - process
->initialise
- process->use_tty
- process-name
