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Date: Fri, 10 Mar 2023 09:15:39 -0700
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Subject: Re: General scripting issues vs. Linux
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From: Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
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On 2023-03-10 06:59, Ken Brown via Cygwin wrote:
> On 3/10/2023 8:47 AM, Markus Becker via Cygwin wrote:
>> I am quite an newby in Cygwin scripting and encountered several execution
>> issues with bash scripts. For example, when i try to execute the following
>> simple scriptfile "skript1.sh":
>> # This is a testscript
>> Statement="This is the testscript number 3"
>> FILE="home/mbecker/Secure_Copy_Beispiel.txt"
>> ls -l $FILE
>> echo $Statement
>> echo The file is $FILE
>> i got these results:
>> $ ./skript1.sh
>> ls: cannot access 'home/mbecker/Secure_Copy_Beispiel.txt'$'\r\r': No such
                                                              ^^^^^
>> file or directory
>> This is the testscript number 3
>> The file is home/mbecker/Secure_Copy_Beispiel.txt
>> or another results from a different script:
>> $ ./skript7.sh
>> ./skript7.sh: line 3: $'clear\r': command not found
                                 ^^^
>> Dr▒cken sie beliebige Tasten und dann return
>> ': not a valid identifierd: `TASTE
>> These are just two of several issues coming up with bash scripting in
>> Cygwin. Maybe this is merely a corse problem with my platform
>> understanding. But why is Cygwin calling errors when performing standard
>> Linux bash commands? Is it due to a different syntax? Or is it even simpler?

> It looks like your scripts have CRLF line endings.

Utilities such as coreutils, gawk, grep, sed, etc. Cygwin packages had Cygwin 
tweaks removed in 2017 to be compatible with Linux and other platforms in 
handling '\r' before newlines, except for the single exception of Cygwin text 
mounts, where '\r' may be stripped if a program opens a file from that mount in 
text "t" mode, and may be added on writes to a file in text "t" mode on a text 
mount:

	https://www.cygwin.com/cygwin-ug-net/using-textbinary.html

discussions:

	https://cygwin.com/legacy-ml/cygwin/2017-02/msg00152.html
	https://cygwin.com/legacy-ml/cygwin/2017-02/msg00188.html
	https://cygwin.com/legacy-ml/cygwin/2017-02/msg00189.html

Install package dos2unix which conveniently strips the offending junk from your 
scripts and files e.g.

	d2u -k skript*.sh

Install and use Cygwin editors and utilities, or check editor and utility 
settings to ensure they are not set to behave like Windows e.g. gvim set 
fileformat=unix termencoding=utf-8 fileencoding=utf-8 in your ~/.gvimrc ~/.vimrc 
~/.virc ~/.exrc; emacs (set-buffer-file-coding-system 'mule-utf-8-unix) in 
~/.emacs, type C-x C-q C-m f mule-utf-8-unix, or do the equivalent in more 
sophisticated initializations (auto)detecting file type, encoding, and format; 
for git config --global core.autocrlf = input, see:

https://stackoverflow.com/questions/3206843/how-line-ending-conversions-work-with-git-core-autocrlf-between-different-operat

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry

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