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For the command: /usr/bin/sh -c "ls 1`" (a backquote after 1).
How to make it run successfully? Adding a backslash before "`" does not work. ` is a special char as we know, and I tried surrounding it with single quote too (/usr/bin/sh -c "ls 1'`'"), but that doesn't work either.
The error always are:
% /usr/bin/sh -c "ls 1\`"
Unmatched `