On 2020-09-20 20:52, Gary Dale wrote:
On 2020-09-20 22:55, David Christensen wrote:
2020-09-20 19:50:55 dpchrist@tinkywinky ~/sandbox/sh $ cat debian-user-20200920-1727-gary-dale.sh #!/bin/sh doublequote="/root/clamscan-report" echo $doublequote singlequote='/root/clamscan-report' echo $singlequote noquote='/root/clamscan-report' echo $noquote 2020-09-20 19:53:02 dpchrist@tinkywinky ~/sandbox/sh $ /bin/sh -x debian-user-20200920-1727-gary-dale.sh + doublequote=/root/clamscan-report + echo /root/clamscan-report /root/clamscan-report + singlequote=/root/clamscan-report + echo /root/clamscan-report /root/clamscan-report + noquote=/root/clamscan-report + echo /root/clamscan-report /root/clamscan-report
In the simple case, the quotes are the same, but there are times when they have different behaviours. I avoid single-quotes so that when I use them, it's a clue that there is a reason.
AIUI the Bourne shell interpolates variables, and potentially other constructs, within double-quotes. I avoid double quotes unless I want interpolation.
Here's what I got with your script: /root/clamscan-report /root/clamscan-report /root/clamscan-reportWhen I retried my script with the quotes, it started working. I have no idea what changed from earlier today. I certainly didn't update anything on either server...
I find that a version control system can be very useful for system administration, by allowing me to check in and verify all of my configuration files, scripts, etc..
David