pwd: /out/package ppid: 358 1: WRITELN echo 123 > 1.txt 2: WRITELN echo 222 > 2.txt 3: WRITELN echo 321 > 4.txt 4: WRITELN cat < 1.txt 2.txt > 3.txt 4.txt 5: WRITELN cat 1.txt 6: WRITELN cat 2.txt 7: WRITELN cat 3.txt 8: WRITELN cat 4.txt 9: WRITELN ls 10: WRITELN exit
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