4BSD/usr/man/cat1/uudiff.1c

UUDIFF(1C)          UNIX Programmer's Manual           UUDIFF(1C)



NAME
     uudiff - directory comparison between machines

SYNOPSIS
     uudiff [ -d ] local-name remote-name

DESCRIPTION
     _U_u_d_i_f_f compares the files in the directory _l_o_c_a_l-_n_a_m_e and
     the directory _r_e_m_o_t_e-_n_a_m_e, (where _r_e_m_o_t_e-_n_a_m_e may be of the
     form _s_y_s_t_e_m-_n_a_m_e!_d_i_r_e_c_t_o_r_y-_n_a_m_e and _s_y_s_t_e_m-_n_a_m_e is a _u_u_c_p
     Unix name).  It reports (via mail) which files are added,
     deleted, or changed, and provides a _d_i_f_f(_1) of altered
     printable files.

     If a part of _r_e_m_o_t_e-_n_a_m_e is omitted (either the system or
     the directory) the corresponding part of _l_o_c_a_l-_n_a_m_e is used.
     If _l_o_c_a_l-_n_a_m_e is a file, rather than a directory, _r_e_m_o_t_e-
     _n_a_m_e is also assumed to be a file and the program degen-
     erates into _d_i_f_f(_1).

     The option -d does not diff altered files; only the summary
     by file names is prepared.

FILES
     Lots.  Files zz[abcdeglmn]????? are used for scratch space;
     files brought back from the remote machine for _d_i_f_f_i_n_g are
     stored (and left around) as _n_a_m_e.????? and the final report
     is left in _u_u_d_i_f_f.????? (the exact name is reported by
     mail).

SEE ALSO
     diff(1), uucp(1)

DIAGNOSTICS
     Almost none.  Anything more serious than misspelling _l_o_c_a_l-
     _n_a_m_e causes unpredictable and obscure results.

BUGS
     In addition to the standard _u_u_c_p requirements a hook is
     needed at the remote system, and at present is only
     installed on the systems "research" and "inter".
     This program is written in shell and should be translated to
     C so it could give diagnostics.
     Even if "remote-system" is the local system, uudiff is sub-
     ject to delays in uucp traffic.
     It should probably write the standard output, instead of
     insisting on going into the background.
     Since checksums are used there is a probability of 1 in
     2**32 of missing differences between files.
     The ~userid syntax is not recognized.





Printed 11/10/80                                                1