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To allocate standard input to /dev/null, the command syntax is as follows:
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<pre>ucmd [OPTIONS...] < /dev/null
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If
ucmd is executed as a background job (using the
& operator), it will receive the SIGTTIN signal when
ucmd tries to read from standard input. Background jobs cannot read their standard input from the terminal since the foreground job (or the shell) has it allocated. The
ucmd job is stopped until it is brought to the foreground.
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The following figure illustrates the command line syntax – using the command line, long form of the configuration options – of UCMD Manager for UNIX.
* The command file (-file or -encryptedfile) can contain some or all required and/or optional configuration options, including -cmd (or -script) and -host.
If a command file is specified on the command line, and it contains the required -cmd (or -script) and -host options, those options do not have to be specified additionally on the command line.