# Input: arg1: path of tar archive
# Output: exit code 0 : tar readable
# exit code 1 : tar missing; created
# exit code 2 : tar not readable; moved; replaced
# Input: arg1: path of tar archive
# Output: exit code 0 : tar readable
# exit code 1 : tar missing; created
# exit code 2 : tar not readable; moved; replaced