如何在bash中转换文本文件？ （从foo.txt到bar.txt）

Question

I'm trying to append, via bash, one text file to another using foo.txt >> bar.txt . The problem is, foo.txt is a windows text file (I think), because once appended in bar.txt

every new^M
line^M
ends^M
like this.^M

Thus, they are surely two different file-types.

I've searched Google for answers but Google doesn't accept special characters like ">>" and "^" in search . The closest solution I can find is a reported solution on commandlinefu.com , but all it does is strip the r's from bar.txt which, really, is no solution at all.

So, I have two questions here:

1. How do I discover, using bash, what file-type foo.txt really is?
2. How do convert foo.txt properly to make it appendable to bar.txt?

Answer 1

用dos2unix转换Windows行尾：

dos2unix foo.txt

Answer 2

sed 's/$'"/`echo \\\r`/" foo.txt >> bar.txt

或使用dos2unix （如果可用）。

Answer 3

1. file foo.txt具有DOS样式的行尾，则file foo.txt将输出：“ ASCII文本，带有CRLF行终止符”。

Answer 4

使用fromdos和todos或unix2dos和dos2unix 。

Answer 5

Look up the commands dos2unix and unix2dos . You may wish to make a copy first ( cp )

Answer 6

快速而又肮脏的解决方案：

tr -d '\r' < foo.txt