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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 ==
[[32v 1m diff|diff(1)]], [[32v 1m uucp|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.

[[Category:32v man section 1]]

32v 1m uudiff - Revision history

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