On Thu 09 Jun 2016 at 22:41:27 (-0400), Gene Heskett wrote:
> A bash script that has worked most of a decade now refuses.
>
> For instance, assume that var InMail is = "gene", and can be echoed from
> the command line using $InMail like this.
> gene@coyote:~$ echo $InMail
> gene
> But I'll be switched if I can get a result from a line of code resembling
> this from the command line while attempting to troubleshoot a 110 line
> bash script: which asks "if test [${InMail} = "gene"]
> then
> -----
> elif (another name)
> yadda yadda
>
> gene@coyote:~$ echo `test [${InMail} = "gene"]`
>
> All I get is the linefeed. Obviously I'm losing it, so how do I
> translate and get usefull output for troubleshooting?
$ `[ ${InMail} = "gene" ]` ; echo $?
0
$ `[ ${InMail} = "xgene" ]` ; echo $?
1
$ `test ${InMail} = "gene"` ; echo $?
0
$ `test ${InMail} = "xgene"` ; echo $?
1
$
elif needs [], not (), and it needs a then too.
[ is a command like test, so it must be followed by a space
before its argument.
Often the easiest way of solving these is grep -A ... used with
/etc/init.d/*
Cheers,
David.