Is dash or some other shell “faster” than bash?
I always thought that the only benefit of using dash instead of bash was that dash was smaller, and therefore many instances of dash would start faster at boot time.
dash
Using diff to compare the output of two commands
How does one go about using diff to compare the output of two commands?
Why does no one use the true Bourne shell as /bin/sh?
I’ve noticed that basically no system I’ve ever worked with has /bin/sh as a real executable. It’s always a symlink to dash, bash in POSIX mode, or something similar.
How to emulate Process Substitution in Dash?
In bash, I can use Process Substitution and treat output of a process as if it was a file saved on disk: