remove CR line terminators

Question

Firstly I would say that I have read this post however I still have problems for the CR line terminators.

There is a file called build_test.sh

Answer 1

Also, if you work with vim, you can enforce UNIX line endings by executing

:set fileformat=unix
:w

or just add

set fileformat=unix

to your .vimrc file

Answer 2

I finally figured out that I could use this command:

tr '^M' '\n' <build_test.sh >build_test_nocr.sh

where ^M is added by pressing Ctrl+v and Enter keys.Alternately, this has the same effect:

tr '\r' '\n' <build_test.sh >build_test_nocr.sh

Answer 3

Simple \r terminators for newlines are "old Mac" line terminators, it is strange that an editor in 2012+ even generates files with such line terminators... Anyway, you can use the mac2unix command, which is part of the dos2unix distribution:

# Edits thefile inline
mac2unix thefile
# Takes origfile as an input, outputs to dstfile
mac2unix -n origfile dstfile

This command will not munge files which have already expected line terminators, which is a bonus. And the reverse (unix2mac) also exists.

Note that mac2unix is the same as dos2unix -c mac.