Webb22 jan. 2024 · A cash register is a machine that keeps track of sale transactions, holds money and gives change. A POS system is more than that as it is a computerized system that records several types of business data, tracks … WebbHere’s how it works: fork { exec ("ls") } This will run ls on another process & display its output. Because this command is running in another process it will not block your Ruby app from running like the system method or %x. Important: If you use exec without fork you’re going to replace your current process.
Getting output of system() calls in Ruby - Stack Overflow
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Ruby VeriFone ® Guide - AGKSoft
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