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This article identifies different behaviors of "call system" between UNIX environments.

Problem:

The user program makes a call to system, for example: 
call "system"  using "ls -la"
On one system this works as expected, whereas on another it is necessary to add x"00" to the end of the command-line. For example: 
01 WORK-COMMAND.
            03 COMMAND              PIC X(050) VALUE "ls -la" .
            03 FILLER                    PIX X(002) VALUE X" 00" .


procedure division.
CALL "SYSTEM"  USING WORK-COMMAND.
Why is this?

Resolution:

This behavior depends on the case used in the CALL statement.

call "system" (all lower-case) calls the OS system utility. This is platform specific, and may give unexpected terminal display results. When you are using the MF function CALL "SYSTEM" (upper-case) you must use x"00" to terminate the command.

Incident Number: 2202924

Old KB# 14426
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