system

func Abs ¶

func Abs(path string) (string, error)

Abs resolves a path to an absolute path.

func ByteLimitLabel ¶ added in v0.20.2

func ByteLimitLabel(size int64) string

ByteLimitLabel formats a byte limit for user-facing messages.

func Command ¶

func Command(name string, args ...string) *exec.Cmd

Command constructs an external process command.

func CommandContext ¶ added in v0.15.2

func CommandContext(ctx context.Context, name string, args ...string) *exec.Cmd

CommandContext constructs an external process command bound to ctx.

func FileExists ¶

func FileExists(path string) (bool, error)

FileExists reports whether path exists and is a file.

func Getwd ¶

func Getwd() (string, error)

Getwd returns the current working directory.

func LookPath ¶

func LookPath(file string) (string, error)

LookPath resolves a command on PATH.

func PathEnv ¶

func PathEnv() string

PathEnv returns the current PATH value.

func ReadFileLimit ¶ added in v0.20.2

func ReadFileLimit(path string, maxBytes int64) ([]byte, error)

ReadFileLimit reads at most maxBytes from path.

The size is checked before reading when it is available and again while reading, so the limit also holds if the file grows after it is opened.

func ReadLimit ¶ added in v0.20.2

func ReadLimit(input io.Reader, declaredSize, maxBytes int64) ([]byte, error)

ReadLimit reads input while enforcing maxBytes. A negative declaredSize means the size is not known before reading.

func ResolveExistingFile ¶

func ResolveExistingFile(pathValue string) (string, error)

ResolveExistingFile resolves pathValue to an absolute path and validates that it exists as a file.

func UserHomeDir ¶

func UserHomeDir() (string, error)

UserHomeDir returns the current user's home directory.