在Windows 10上使用cygwin和git bash的Shell脚本评估失败

Question

export testval='hdhhdhdh'
echo $testval
if [ ! -d ${testval} ]; then
echo -e "${RED}Please specify jettyScheduler as an environmental 
variable${RESET}"
exit
fi

The above evaluation is failing eventhough testval is set explicity in the script . I got a new laptop with windows 10 OS , the above was working fine using cygwin on Windows 7 . The same is failing using cygwin & git bash on windows 10 . Can someone help ?

Answer 1

You've misunderstood what test -d does - it checks for existence of a directory, so what you see is expected (assuming that 'hdhhdhdh' isn't the name of a directory). If you just want to check if an environment is set, then test -z (or conversely test -n ) is one way to do it, as you have seen.

PS You should also get into the habit of quoting variables ("$testval") if there's any possibility it may contain spaces.