, unix2dos 用在 DOS <=> UNIX text file 转换
DOS 格式 0d 0a
UNIX 格式 0a
有时手边无此工具, 可用功能相同的指令组合
dos2unix:
sed -i” "s/\r//g" file
or
cat file | col -b > newfile
or
cat file | tr -d "\r" > newfile
cat file | tr -d "\015" > newfile
unix2dos:
sed -i” "s/$/\r/" file
sed -i” "s/$/\x0d/" file
-i后面的是单引号组成
以上适用 GNU sed, FreeBSD 下的 sed 不适用
查找至::http://pank.org/blog/archives/000209.html
4.1 unix2dos.c程序模块
unix2dos.c程序模块：用来把UNIX格式的文件转换为DOS/WINDOWS格式的文件。
unix2dos.c程序模块源代码如下所示：
/* $Date: 2001/03/28 12:19:21 $
*
* UNIX to DOS text format conversion.
*
* $Log: unix2dos.c,v $
* Revision 1.1 2001/03/28 12:19:21 vong
* Initial revision
* Written by Haowen Huang
*/
static const char rcsid[] =
"$Id: unix2dos.c,v 1.1 2001/03/28 12:19:21 vong Exp $";
#include
#include
#include
#include "file_transfer.h"
/*
* Convert file named by pathname to DOS
* text format, on standard output:
*/
int
unix2dos(const char *pathname) {
int ch; /* Current input character */
FILE *in = 0; /* Input file */
if ( !(in = fopen(pathname,"r")) ) {
fprintf(stderr,"Cannot open input file.\n");
return 2;
}
while ( (ch = fgetc(in)) != EOF ) {
if ( ch == ‘\n’ )
putchar(‘\r’);
putchar(ch);
}
fclose(in);
return 0;
}
4.2 dos2unix.c程序模块
dos2unix.c程序模块：用来把DOS/WINDOWS格式的文件转换为UNIX格式的文件。
dos2unix.c程序模块源代码如下所示：
/* $Date: 2001/03/28 12:29:37 $
*
* The DOS to UNIX text conversion:
*
* $Log: dos2unix.c,v $
* Revision 1.1 2001/03/28 12:29:37 vong
* Initial revision
* Written by Haowen Huang
*/
static const char rcsid[] =
"$Id: dos2unix.c,v 1.1 2001/03/28 12:29:37 vong Exp $";
#include
#include
#include
#include "file_transfer.h"
/*
* Convert file named by pathname, to
* UNIX text file format on standard output:
*/
int
dos2unix(const char *pathname) {
int ch; /* Current input character */
int cr_flag; /* True when CR prev. encountered */
FILE *in = 0; /* Input file */
if ( !(in = fopen(pathname,"r")) ) {
fprintf(stderr,"Cannot open input file.\n");
return 2;
}
cr_flag = 0; /* No CR encountered yet */
while ( (ch = fgetc(in)) != EOF ) {
if ( cr_flag && ch != ‘\n’ ) {
/* This CR did not preceed LF */
putchar(‘\r’);
}
if ( !(cr_flag = ch == ‘\r’) )
putchar(ch);
}
fclose(in);
return 0;
