F18, F19 webalizer problem?

[Cameron Simpson]

On 26Apr2013 09:12, Patrick O'Callaghan <pocallaghan at gmail.com> wrote:
| On Fri, 2013-04-26 at 15:36 +0300, Cristian Sava wrote:
| > Webalizer is enabled via /etc/sysconfig/webalizer but I don't understand
| > why /etc/cron.daily/00webalizer has this line:
| > 
| > [ "z$WEBALIZER_CRON" != "zyes" ] && exit 0
| > 
| > that I think it should be (and it is working this way)
| > 
| > [ "$WEBALIZER_CRON" != "yes" ] && exit 0
| > 
| > What is the mistery?
| 
| The "z$Foo" != "zbar" style is idiomatic in Shell scripts. I think it's
| to ensure portability between Shells with slightly different expression
| rules.

In particular it avoids issues where $WEBALIZER_CRON looks like a test
operator such as "-z" or something unfortunate.
-- 
Cameron Simpson <cs at zip.com.au>

Please send me text instead of PDF.
http://www.complang.tuwien.ac.at/anton/why-not-pdf.html