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The EXEC statement causes, on a mainframe environment, a program, a JCL or a PROC to be started, depending on the supplied parameters. In the XFRAME environment, the start method changes depending on what you intend to start. Starting programs In UNIX/Linux shells, programs are activated simply providing the name of the executable as command. I.e. mybin Normally, COBOL program are not compiled as standalone executable, but they are left as linkable objects, demanding the dynamic link to the runtime phase. This lead to an higher degree of mainteinability, without performance loss. The run a COBOL intermediate, the command xrun is used, according to the following syntax: xrun <pgm-name> Passing data cards xrun enables programs to receive parameters cards, and to do it, it uses the standard input descriptor. Therefore if your parameter cards are enclosed in the script, an in-script redirection using the “<<” redirector is to be utilized. I.e.: #!/bin/csh If the parameters cards are contained in a separate file, then the “<” redirector can be used: xrun PROG1 < /some/where/cards.txt Providing a PARM The PARM parameter of the EXEC command, is managed by xrun through the XRUN_PARM environment variable. It must be set with the desire value before the execution of the program, and unset after the execution. I.e. # //STEPX EXEC PGM=MYPGM,PARM=MYVALUE Starting PROCs The PROCs are converted into shell scripts, that must be invoked by the master script. To allow dynamic parameter substitutions and overrides, called scripts must be run by xdsh. I.e. xdsh MYPROC1.csh |