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-
- shell [cmd [args...]]
-
-
- Suspends JNOS and executes a sub-shell ("command processor"
- under MS-DOS). When the sub-shell exits, Nos resumes (under MS-DOS,
- enter the exit command).
-
-
- Note: see the COMSPEC environment variable.
-
-
- Background activity (FTP servers, etc.) is also suspended while
- the subshell executes. Note that this will fail unless there is
- sufficient unused memory for the subshell and whatever command the
- user tries to run. When shelled out, Mailbox Operator connects and
- ttylink incoming connections are refused. A 'system unattended'
- message is sent to the "connector" of that socket.
-
- Here are some comments particular to the MSDOS system: if no
- arguments are provided to the JNOS shell command, the MSDOS command processor
- is invoked to process commands entered from the console. Use the exit command
- to return to JNOS. If arguments are provided, the first one is assumed to
- be the program name to invoke. If the program is a batch file, you must
- precede it's name with /c so as to invoke the command processor explicitly
- to process the batch file commands: shell /c ibackup.bat \spool\mail \bkup
- The /c prefix is also useful to allow i/o redirection to be interpreted
- by DOS: shell /c FC /A /C autoexec.bat autoexec.sav >outfile
-
-