How can I execution a bash line(command) that contains the redirection characters? For instance, the following line can't be execution.
home>CMD="ls -l > out" home>$CMD ls: cannot access >: No such file or directory ls: cannot access out: No such file or directory Thanks for your help in advance.
eval $CMD will do what you want.
eval is a bug magnet, and should be avoided whenever possible. If you must use it, at least double-quote the argument (i.e. eval "$CMD") to avoid the really bizarre behavior that can come from having the command run through extra levels of parsing.You could use eval, but it is not recommended. If the purpose of storing the command in a variable is to execute it multiple times, it is better to use a function.
Example:
dols() { ls -l > out } dols See also: I'm trying to put a command in a variable, but the complex cases always fail!
