rush

command
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Published: Jul 10, 2019 License: BSD-3-Clause Imports: 18 Imported by: 0

Documentation

Overview

our first builtin: cd

The u-root shell is intended to be very simple, since builtins and extensions are written in Go. It should not need YACC. As in the JSON parser, we hope this simple state machine will do the job.

Rush is an interactive shell similar to sh.

Description:

Prompt is '% '.

Time process execution.

Synopsis:

time CMD [ARG]...

Description:

After executing CMD, its real, user and system times are printed to
stderr in the POSIX format.

CMD can be a builtin, e.g. time cd

Example:

$ time sleep 1.23s
real 1.230
user 0.001
sys 0.000

Note:

This is different from bash's time command which is built into the shell
and can time the entire pipeline.

Bugs:

Time is not reported when exiting due to a signal.

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