env

env 工具的有限端口

用法

env 1.0.1
Executes program in a modified environment

USAGE: [OPTIONS] [NAME=VALUE]... [COMMAND [ARG]...]

OPTIONS:
    -h,  --help                Prints this help information
    -i,  --ignore-environment  Start with an empty environment
    -C,  --chdir <chdir>       Changes working directory to specified one.
    -u,  --unset <unset>       Remove variable from the environment