Hello, The following three commands work as expected: root@cosmic:~# ssh localhost 'echo 1 && echo 2 && echo 3' 1 2 3 root@cosmic:~# ssh localhost "dash -c 'echo 1 && echo 2 && echo 3'" 1 2 3 root@cosmic:~# ssh localhost echo 1 2 3 4 5 1 2 3 4 5 The following three commands produce unexpected behavior. Specifically, it appears that the first nested command is called with no arguments. root@cosmic:~# ssh localhost dash -c 'echo 1 && echo 2 && echo 3' 2 3 root@cosmic:~# ssh localhost dash -c 'touch a && touch b && touch c' touch: missing file operand Try 'touch --help' for more information. root@cosmic:~# ssh localhost dash -c 'touch a b && touch c d && touch e f' touch: missing file operand Try 'touch --help' for more information. Is the above the intended behavior? If so, why? What is going on? It seems strange to me. The above commands were run on Ubuntu 18.10 on a VPS at Digital Ocean. The openssh package version appears to be: 1:7.7p1-4. Another pair of examples: root@cosmic:~# ssh localhost dash -c 'hostname && hostname && hostname' cosmic cosmic cosmic root@cosmic:~# ssh localhost dash -c 'echo `hostname` && echo `hostname` && echo `hostname`' cosmic cosmic Another strange example: root@cosmic:~# ssh localhost dash -c 'exit 2 && exit 3 && exit 4' (Will exit with status of 3.) Thank you, Parke _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
