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1.1 root 1: .pa 1
2: .he 'MT (I)'6/12/72'MT (I)'
3: .ti 0
4: NAME mt -- manipulate magtape
5: .sp
6: .ti 0
7: SYNOPSIS mt__ [ key ] [ name ... ]
8: .sp
9: .ti 0
10: DESCRIPTION mt__
11: saves and restores selected portions of the file system
12: hierarchy on magtape.
13: Its actions are controlled by the key___ argument.
14: The key is a string of characters containing
15: at most one function letter and possibly
16: one or more function modifiers.
17: Other arguments to the command are file or directory
18: names specifying which files are to be dumped, restored,
19: or tabled.
20:
21: The function portion of
22: the key is specified by one of the following letters:
23:
24: .in +6
25: .ti -3
26: r The indicated files and directories, together with
27: all subdirectories, are dumped
28: onto the tape.
29: The old contents of the tape are lost.
30:
31: .ti -3
32: x extracts the named files from the tape to the file system.
33: The owner, mode, and date-modified are restored to what they
34: were when the file was dumped.
35: If no file argument is given, the entire contents of the
36: tape are extracted.
37:
38: .ti -3
39: t lists the names of all files stored on the tape which
40: are the same as or are hierarchically below
41: the file arguments. If no file argument is given,
42: the entire contents of the tape are tabled.
43:
44: .ti -3
45: l is the same as t_ except that an expanded listing
46: is produced giving all the available information about the
47: listed files.
48:
49: .in -6
50: The following characters may be used in addition to the letter
51: which selects the function desired.
52:
53: .in +6
54: .ti -3
55: 0, ..., 7 This modifier selects the drive on which the tape is mounted.
56: "0" is the default.
57:
58: .ti -3
59: v Normally mt__ does its work silently. The v_ (verbose)
60: option causes it to type the name of each file it treats
61: preceded by a letter to indicate what is happening.
62:
63: .in +2
64: a file is being added
65: x file is being extracted
66:
67: .in -2
68: The v_ option can be used with r_ and x_ only.
69:
70: .ti -3
71: f causes
72: new entries copied on tape to be 'fake' in that
73: only the entries, not the data associated
74: with the entries are updated.
75: Such fake entries cannot be extracted.
76: Usable only with r_.
77:
78: .ti -3
79: w causes mt__ to pause before treating each file, type
80: the indicative letter and the file name (as with v_)
81: and await the user's response. Response
82: "y" means "yes", so the file is treated. Null response
83: means "no", and the file does not take part
84: in whatever is being done. Response "x" means "exit";
85: the mt__ command terminates immediately. In the x_ function,
86: files previously asked about
87: have been extracted already.
88: With r_, no change has been made to the tape.
89:
90: .ti -3
91: m make (create) directories during an x_ if necessary.
92: .in -6
93: .sp
94: .ti 0
95: FILES /dev/mt?
96: .sp
97: .ti 0
98: SEE ALSO tap(I), tap(V)
99: .sp
100: .ti 0
101: DIAGNOSTICS Tape open error
102: .br
103: Tape read error
104: .br
105: Tape write error
106: .br
107: Directory checksum
108: .br
109: Directory overflow
110: .br
111: Seek error
112: .br
113: Tape overflow
114: .br
115: Phase error (a file has changed after it was selected for
116: dumping but before it was dumped)
117: .br
118: .sp
119: .ti 0
120: BUGS If, during an "x",
121: the files are specified in a different order
122: than they are on the tape,
123: seek errors will result because the tape
124: cannot be rewound.
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