pwd: /out/package
ppid: 20849
   1: WRITELN > abc | | grep 123
   2: WRITELN exit

mumsh $ error: missing program
mumsh $ exit

=================================================================
==20850==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 800 byte(s) in 1 object(s) allocated from:
    #0 0x4dce00  (/out/package/mumsh_memory_check+0x4dce00)
    #1 0x515ab5  (/out/package/mumsh_memory_check+0x515ab5)
    #2 0x7f0aacac2b96  (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)

SUMMARY: AddressSanitizer: 800 byte(s) leaked in 1 allocation(s).

mumsh $ error: missing program
mumsh $ exit