Re-implementation of the daemontool's envdir written from Python to Golang. like envdir, genvdir runs another program with environment modified according to files in a specified directory.
- Golang for development.
genvdir dir prog... [flags]
dir is a single argument.
prog consist of one or more arguments.
genvdir sets various environment variables as specified by files in the directory named dir. It then runs prog.
If dir contains a file named s whose first line is t, envdir removes an environment variable named s if one exists, and then adds an environment variable named s with value t. The name s must not contain =. Spaces and tabs at the end of t are removed. Nulls in t are changed to newlines in the environment variable.
If the file s is completely empty (0 bytes long), envdir removes an environment variable named s if one exists, without adding a new variable.
envdir exits 111 if it has trouble reading dir, if it runs out of memory for environment variables, or if it cannot run child. Otherwise its exit code is the same as that of child.
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