You can use variables to build commands. The SHOFIL.CMD program is an example. SHOFIL types a file that the user specifies. It prompts the user to enter a file name and then builds a variable containing the TYPE command and the input file name.
To have Rexx issue the command to the operating system, put the variable containing the command string on a line by itself. Rexx evaluates the variable and passes the resultant string to Windows:
/* SHOFIL.CMD - build command with variables */ /* prompt the user for a file name */ say "Type a file name:" /* assign the response to variable FILENAME */ pull filename /* build a command string by concatenation */ commandstr = "TYPE" filename /* Assuming the user typed "demo.txt," */ /* the variable COMMANDSTR contains */ /* the string "TYPE DEMO.TXT" and so... */ commandstr /* ...Rexx passes the */ /* string on to Windows */
Rexx displays the following on the screen when you run the program:
[C:\]rexx shofil Type a file name: demo.txt This is a sample text file. Its sole purpose is to demonstrate how commands can be issued from Rexx programs. [C:\]