hi
I need some help with this simple bash script, I ran the script twice,
the first time it failed on some bash arithmetic, I then ran it again
without changing anything and it worked, so I slightly puzzled as lines
8&11 are the same and sometimes it evaluates it and sometimes not.
Steve
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[bin]$ cat world
#!/usr/bin/bash
cd /home/thorfinn/projects/image/clouds/
d=`date +%Y-%m-%d`
mkdir $d
cd $d
pwd
let tst=`date +%H`*3600+`date +%M`*60+`date +%S`
echo $tst
sleep 10
let tq=`date +%H`*3600+`date +%M`*60+`date +%S`
while [ $tq -gt $tst ]
# watch a web graphic of clouds and grab every 30 minutes
# the while statement is to stop at midnight.
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[bin]$ ./world
mkdir: cannot create directory `2012-08-19': File exists
/home/thorfinn/projects/image/clouds/2012-08-19
./world: line 8: let: tst=20*3600+42*60+09: value too great for base
(error token is "09")
./world: line 13: [: 74539: unary operator expected
[bin]$ ./world
mkdir: cannot create directory `2012-08-19': File exists
/home/thorfinn/projects/image/clouds/2012-08-19
74544
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