02-18-2005
Removing last character from each line of file
How can I remove the last character from each line of a file?
This must be done without "funny" characters, as I want to transfer the code to/from Windows.
Any ideas?
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cxy(4) Kernel Interfaces Manual cxy(4)
Name
cxy - CXY08 communications interface
Syntax
device dhu0 at uba0 csr 0160440 flags 0x?? vector dhurint dhuxint
Description
A CXY08 provides eight communication lines with modem control adequate for UNIX dialup use. The device behaves and looks just like a DHV11
and is specified in the configuration line the same as a DHV11 device. Each line attached to the CXY08 communications interface behaves as
described in and can be set to run at any of 16 speeds. See for the encoding.
Bit i of flags can be specified for a device to say that a line is not properly connected and that the line should be treated as hardwired
with carrier always present. Thus, specifying flags 0x04 in the specification of would cause line tty02 to be treated in this way.
The driver normally interrupts on each input character. The and devices operate under the control of the driver.
Diagnostics
dhu%d: receive fifo overflow
The character input fifo overflowed before it could be serviced. This can happen if a hard error occurs when the CPU is running with ele-
vated priority, as the system then prints a message on the console with interrupts disabled. This can cause a few input characters to be
lost to users. It is not serious.
dhu%d:%d DMA ERROR
A DMA transfer error has occurred. The unit number and line number are printed. This means that the channel indicated has failed to
transfer DMA data within 10.7 microseconds of the bus request being acknowledged or that there is a memory parity error. This may cause a
few output characters to be lost.
dhu%d: DIAG. FAILURE
This indicates that the internal diagnostics have detected an error.
dhu%d: DHU HARDWARE ERROR. TX.DMA.START failed
The failed to clear the start bit. Normally, this is cleared to signal that a DMA transfer has completed.
Files
Dialups
See Also
tty(4), MAKEDEV(8)
cxy(4)