www.pudn.com > C中MODEM的开发.zip > UNDOS.1

'\" Last Delta     01-26-86 
.TH UNDOS 1 OMEN 
.SH NAME 
undos,tounix,todos,tocpm,tomac,unmac,unparity \- Change 
ASCII file format for target operating system 
.SH SYNOPSIS 
.B undos 
[ 
.B -s 
] 
file ... 
.br 
.B tounix 
[ 
.B -s 
] 
file ... 
.br 
.B todos 
[ 
.B -s 
] 
file ... 
.br 
.B tocpm 
[ 
.B -s 
] 
file ... 
.br 
.B unmac 
[ 
.B -s 
] 
file ... 
.br 
.B tomac 
[ 
.B -s 
] 
file ... 
.br 
.B unparity 
file ... 
.SH DESCRIPTION 
.B Undos 
and 
.B tounix 
convert DOS or CP/M format source files to Unix format by deleting 
carriage returns preceding linefeeds and eliminating characters 
starting with CPMEOF (^Z). 
.PP 
.B Todos 
converts Unix format source files to DOS format by adding a carriage return 
(if not already present) before each linefeed, 
and eliminates characters 
starting with CPMEOF (^Z). 
.B Tocpm 
additionally appends CPMEOF (^Z) characters to the resulting file 
to make the file length a multiple of the 128 byte CP/M record length. 
 
Any combination of 
.B undos, todos, 
or 
.B tocpm 
(without flags) 
may be applied to a proper ASCII 
file without destroying information. 
Lone carriage returns used to force overprinting are not translated 
to CR/LF pairs. 
 
.B Unmac 
converts files with lines terminated only by carriage return 
to Unix format. 
.B Unmac 
should only be used to translate files whose lines are terminated 
by lone carriage returns. 
 
.B Tomac 
converts Unix format files to Macintosh format 
(lines terminated by carriage return only). 
 
The optional flag 
.B -s 
Strips the parity bit on all characters 
and discards all resulting characters with values less than 7. 
 
.B Unparity 
merely strips the parity bit from the files. 
 
The access and modification times of the modified files are set 
to those of the original files. 
.SH DIAGNOSTICS 
Refuses to translate files in which "binary" characters (less than 7 
or greater than 127) are seen before CPMEOF. 
Refuses to translate files 
with ultra long lines. 
Refuses to translate special files. 
.SH NOTES 
Should be executed with the current directory in the same filesystem 
as the target files for minimum disk i/o. 
.SH BUGS 
Does not detect short files without linefeeds. 
.B Unmac 
and 
.B tomac 
cannot handle files with CR-only overprinting. 
(ASCII allows either LF or CR/LF to delimit lines, but not CR.) 
.SH SEE ALSO 
lar(1), yam(1), sq(1), usq(1), rb(omen), sb(omen)