This command works very well.
bash < <(echo 'ls')
How this code work?
I cannot understand internal process of this script.
This command works very well. bash < <(echo ‘ls’) How this code work? I
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This command works very well.
bash < <(echo 'ls')
How this code work?
I cannot understand internal process of this script.
<(echo 'stuff')is called process substitution. It uses a named pipe (or FIFO) to pipe the output from the command (although the exact mechanism is system dependant). You can use this construct anywhere* that a file name can be used, so with:we are taking the output from command and passing it to the standard-input stream of program.
*anywhere: some programs use a technique called memory mapping (see
man 2 mmap) which cannot be used with named pipes. A well written program will check the file type beforehand, unfortunately not all programs are well written….