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22.3.4 Executing programs in background ¶

Function: mbfl_program_execbg INFD OUFD PROGRAM ¶

Function: mbfl_program_execbg INFD OUFD PROGRAM ARG … ¶

Like mbfl_program_exec(), but runs the given command line as:

PROGRAM ARG ... <&INFD >&OUFD &

additionally: set the global variable mbfl_program_BGPID to the process ID of the background process; that is: mbfl_program_BGPID is the value of $! right after the process execution.

If the redirection of stderr to stdout is requested with mbfl_program_redirect_stderr_to_stdout(): such request is honoured and consumed. For a discussion of channels redirection when calling this function, see Redirecting channels when executing a program.

Function: mbfl_program_execbg2 INFD OUFD ERFD PROGRAM ¶

Function: mbfl_program_execbg2 INFD OUFD ERFD PROGRAM ARG … ¶

Like mbfl_program_execbg(), but redirects also the standard error of the executed process to ERFD, which must be a numeric file descriptor.

If the redirection of stderr to stdout is requested with mbfl_program_redirect_stderr_to_stdout(): such request is ignored and consumed. For a discussion of channels redirection when calling this function, see Redirecting channels when executing a program.

Variable: mbfl_program_BGPID ¶

Used by mbfl_program_execbg() to store the process id of the program executed in background.