Creates a new tar file and writes bytes from io.ReadCloser.

ExecCmd executes a command with args and returns its output as a string along with an error, if any.

ExecCmdWithStdStreams execute a command with the specified standard streams.

Find a random, open port on the host.

GuardedRemoveAll functions much like os.RemoveAll but will not delete certain catastrophic paths.

Tar creates a tarball from source and returns a readcloser of it.

TarChrootToFilesystem creates a tarball from source and writes to an os.file provided while chrooted to the source.

TarToFilesystem creates a tarball from source and writes to an os.file provided.

TarWithChroot creates a tarball from source and returns a readcloser of it while chrooted to the source.

UntarToFileSystem untars an os.file of a tarball to a destination in the filesystem.