# file 1 A file 2 B file 3 C file 4 D file 5 E file 6 F run md5chk A B C D E F | sed 's/ / */' | md5sum --check RUN 0 A: OK@_B: OK@_C: OK@_D: OK@_E: OK@_F: OK cmp echo `cat F A B C D E F | md5chk -qsm33`+ CMP { md5sum F A B C D E F; echo =; cat F A B C D E F | md5sum; } | sed 's/ .*$//' | tr '\n' + | sed 's/+=+/=/' cmp cat B C D | md5chk -qslm33 CMP echo "`md5chk -q B`-`cat B C | md5chk -qs`-`cat C D | md5chk -qs`+`md5chk -q D`=`cat B C D | md5chk -qs`" cmp md5chk -k A B C D CMP md5chk -p 00000000000000000001 A; md5chk -p 00000000000000000002 B; md5chk -p 00000000000000000003 C; md5chk -p 00000000000000000004 D FILE 1 A FILE 2 B FILE 3 C FILE 4 D FILE 5 E FILE 6 F