RE: carriage return newline being appended when using redirection in binary mode

[<chris dot day at pinky dot co dot uk>]

H Brian -

Output from type and which

chrisd@edmund:chrisd > type -a echo
/usr/bin/ksh: whence: -a: unknown option
chrisd@edmund:chrisd > which -a echo
/usr/bin/echo
/usr/bin/echo

This behaviour of the redirection can also be replicated using sed, etc.

chrisd@edmund:chrisd > od -c foo.txt
0000000   H   e   l   l   o  \n
0000006

chrisd@edmund:chrisd > sed 's/Hello/Goodbye/' foo.txt | od -c
0000000   G   o   o   d   b   y   e  \n
0000010

chrisd@edmund:chrisd > sed 's/Hello/Goodbye/' foo.txt > boo.txt
chrisd@edmund:chrisd > od -c boo.txt
0000000   G   o   o   d   b   y   e  \r  \n
0000011

Curious case of pipe to cat then redirect 

chrisd@edmund:chrisd > sed 's/Hello/Goodbye/' foo.txt | cat > boo.txt
chrisd@edmund:chrisd > od -c boo.txt
0000000   G   o   o   d   b   y   e  \n
0000010

chrisd@edmund:chrisd > echo $CYGWIN
nodosfilewarning codepage:utf-8 binmode

Cheers

Chris Day


c: +44 7930 909 297
p: +44 115 714 0869
s: bigchrisday
https://www.linkedin.com/in/chrisdayabinitio/

-----Original Message-----
From: chris.day@pinky.co.uk <chris.day@pinky.co.uk> 
Sent: 15 April 2019 12:57
To: 'cygwin@cygwin.com' <cygwin@cygwin.com>
Subject: carriage return newline being appended when using redirection in
binary mode

Hi -

I'm having problems with carriage return newline being appended when using
redirection in binary mode. If I pipe to cat and redirect the newline is
preserved, which is odd.

CYGWIN_NT-10.0 edmund 3.0.6(0.338/5/3) 2019-04-06 16:18 x86_64 Cygwin

chrisd@edmund:chrisd > mount
E:/abinitio/cygwin/bin on /usr/bin type ntfs (binary,auto)
E:/abinitio/cygwin/lib on /usr/lib type ntfs (binary,auto)
E:/abinitio/cygwin on / type ntfs (binary,auto)
C: on /cygdrive/c type ntfs (binary,posix=0,user,noumount,auto)
D: on /cygdrive/d type ntfs (binary,posix=0,user,noumount,auto)
E: on /cygdrive/e type ntfs (binary,posix=0,user,noumount,auto)
F: on /cygdrive/f type ntfs (binary,posix=0,user,noumount,auto)
G: on /cygdrive/g type ntfs (binary,posix=0,user,noumount,auto)
H: on /cygdrive/h type vfat (binary,posix=0,user,noumount,auto)
Q: on /cygdrive/q type ntfs (binary,posix=0,user,noumount,auto)
chrisd@edmund:chrisd > echo "Hello"
Hello
chrisd@edmund:chrisd > echo "Hello"  | od -c
0000000   H   e   l   l   o  \n
0000006
chrisd@edmund:chrisd > echo "Hello"  > foo.txt chrisd@edmund:chrisd > od -c
foo.txt
0000000   H   e   l   l   o  \r  \n
0000007
chrisd@edmund:chrisd > echo "Hello"  | cat > foo.txt chrisd@edmund:chrisd >
od -c foo.txt
0000000   H   e   l   l   o  \n
0000006

This does seem contrary to the following posts

https://sourceware.org/ml/cygwin/2017-02/msg00152.html
https://sourceware.org/ml/cygwin/2017-02/msg00188.html
https://sourceware.org/ml/cygwin/2017-02/msg00189.html



Cheers

Chris Day


c: +44 7930 909 297
p: +44 115 714 0869
s: bigchrisday
https://www.linkedin.com/in/chrisdayabinitio/



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