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Re: <<expr 100 * 100>> returns syntax error
- From: Marco Atzeri <marco dot atzeri at gmail dot com>
- To: cygwin at cygwin dot com
- Date: Thu, 28 Jul 2016 15:15:47 +0200
- Subject: Re: <<expr 100 * 100>> returns syntax error
- Authentication-results: sourceware.org; auth=none
- References: <51777330c6d999e10af5937cf2e06ea6fe5@guerrillamail.com>
On 28/07/2016 14:55, 45ownu+e60iporpd8lec@guerrillamail.com wrote:
Steps to reproduce (I cannot update cygwin on this server, but it also happen on 2.5.2(0.297/5/3)):
Main window:
$ uname -r
1.7.25(0.270/5/3)
$ expr 100 * 100
10000
---------------
Other window:
$ $ uname -r
1.7.25(0.270/5/3)
$ HOST=myhostname
$ echo 'whatever' > $HOST.txt
---------------
Main window:
$set -xv
$expr 100 * 100
+ expr 100 myhostname.txt 100
syntax error
clearly here you have bash expending the *
you can solve it by escaping the *
$ expr 100 \* 100
10000
------------------------------------------------
When this happen I can only fix by rebooting the server, which is obviously unideal!
Here my questions:
1) How can I reset cygwin to the initial behaviour without rebooting?
2) why does this happen? how to prevent this?
Thank you :)
F.
Regards
MArco
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