how to gather a result of a program? let a = ls not work. #100
Description
how to gather a result of a program ?
it was able to gather a result of bulitin command like this:
`let a = math@sqrt 8; echo a`
but it fails when the command is another program:
`let a = ls; echo a`
`let a = (ls); echo a`
`let a = date +%s%N; echo a`
after a lot of try, i found that temply solution is to add a builtin command such as `eval or exec or lines:
`let a = ls | eval; echo a`
seems there's a problem to pass some param which contains =
`ls --color=auto`
`'ls --color=auto`
GOT: syntax error: expected end of input
it has to be ls "--color=auto", seems not so compatible...
the single quote was used as spectial punctor, so how to execute commands like awk ?
`cat c | awk '/tags/' `