tp(1)
NAME
tp − manipulate tape archive
SYNTAX
tp [ key ] [ name... ]
DESCRIPTION
The tp command saves and restores files on RX50s or magtape. Its actions are controlled by the key argument. The key is a string of characters containing at most one function letter and possibly one or more function modifiers. Other arguments to the command are file or directory names specifying which files are to be dumped, restored, or listed. In all cases, appearance of a directory name refers to the files and (recursively) subdirectories of that directory.
KEYS
The function portion of the key is specified by one of the following letters:
r The named files are written on the tape. If files with the same names already exist, they are replaced. “Same” is determined by string comparison, so if /usr/dmr is the current directory. If no file argument is given, “.” is the default.
u Updates the tape. u is like r, but a file is replaced only if its modification date is later than the date stored on the tape; that is to say, if it has changed since it was dumped, u is the default command if none is given.
d Deletes the named files from the tape. At least one name argument must be given. This function is not permitted on magtapes.
x Extracts the named files from the tape to the file system. The owner and mode are restored. If no file argument is given, the entire contents of the tape are extracted.
t Lists the names of the specified files. If no file argument is given, the entire contents of the tape is listed.
The following characters may be used in addition to the letter which selects the function desired.
g Specifies 6250 BPI magtape as opposed to RX50s.
h Specifies 1600 BPI magtape as opposed to RX50s.
k Specifies TK50 as opposed to RX50s.
m Specifies 800 BPI magtape as opposed to RX50s.
0,...,7 This modifier selects the drive on which the tape is mounted. Default is 0.
v Normally tp does its work silently. The v (verbose) option causes it to type the name of each file it treats preceded by the function letter. With the t function, v gives more information about the tape entries than just the name.
c Create a new dump; the tape directory is cleared before beginning. Usable only with r and u. This option is assumed with magtape since it is impossible to selectively overwrite magtape.
i Errors reading and writing the tape are noted, but no action is taken. Normally, errors cause a return to the command level.
f Use the first named file, rather than a tape, as the archive. This option works with magtape. It also works with the default disk, except there is no delete function.
w Causes tp to pause before treating each file, type the indicative letter and the file name (as with v) and await the user’s response. Response y means yes, so the file is treated. Null response means no, and the file does not take part in whatever is being done. Response x means exit; the tp command terminates immediately. In the x function, files previously asked about have been extracted already. With r, u, and d no change has been made to the tape.
RESTRICTIONS
A single file with several links to it is treated like several files.
Binary-coded control information makes magnetic tapes written by tp difficult to carry to other machines; tar(1) avoids the problem.
No symbolic links or FIFO files are saved.
DIAGNOSTICS
“Phase error”, indicates the file changed after it was selected for dumping but before it was dumped.
FILES
/dev/rrx0
/dev/rmt0
/dev/rht0
/dev/rtk0