Re: [GNU tar 1.28] testsuite: 5 6 7 8 9 12 15 20 33 40 41 42 47 57 60 63 64 65 66 68 71 73 75 76 85 87 89 90 94 failed

[Paul Eggert]

Looks like you're using a shell that invokes 'tar' and passes the 
fully-qualified file name as argv[0]. You might try using a shell that 
doesn't do that; 'tar' (and most other programs) expect $0 to be the 
name used to invoke the program.