| 词条 | Unix2dos |
| 释义 |
unix2dos (sometimes named todos or u2d) is a tool to convert line breaks in a text file from Unix format (Line feed) to DOS format (carriage return + Line feed) and vice versa. When invoked as unix2dos the program will convert a Unix text file to DOS format, when invoked as dos2unix it will convert a DOS text file to UNIX format. [1]UsageUnix2dos and dos2unix are not part of the Unix standard. Commercial Unixes usually come with their own implementation of unix2dos/dos2unix, like SunOS/Solaris's dos2unix/unix2dos, HP-UX's dos2ux/ux2dos and Irix's to_unix/to_dos. There exist many open source alternatives with different command names and options like dos2unix/unix2dos, d2u/u2d, fromdos/todos, endlines, flip. See the manual page of the respective commands. Alternatives to unix2dos conversionrecode latin1..dos file Similar results can be achieved with different unix tools to change the trailing newline '\' to a combination of carriage return and newline characters '\\r\', for example with perl or the GNU implementation of sed in-line editing: perl -i -p -e 's|[\\r\]+|\\r\|g' file or sed -i -e 's/\\r*$/\\r/' file For the opposite conversion (dos2unix) it is possible to use, for example, the utility tr with the -d '\\r' flag to remove the carriage return characters: tr -d '\\r' < file > file2 # For ASCII and other files which do not contain multibyte characters (Not utf-8 safe). or perl -i -p -e 's/\\r//g' file or sed -i -e 's/\\r//g' file Note: The above method assumes there are only DOS line breaks in the input file. Any Mac line breaks (\\r) present in the input will be removed. An alternative to the dos2unix conversion is possible by using the col command that is available on Linux and other Unix-like operating systems, including Mac OS X. In the following case, InFile contains the undesired DOS (^M) line endings. After execution, OutFile is either created or replaced, and contains UNIX line endings. The -b option tells col not to output backspace characters. col -b < InFile > OutFile See also
References1. ^A practical guide to Linux. Mark G. Sobell {{ISBN|0-13-147823-0}} Page 55 External links
2 : System administration|Unix text processing utilities |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。