[go-nuts] Re: Pass variables to bash
Thanks everyone for your input... I tried HowardCShaw's method before
posting, but I went back and experimented more with it and found that the
output was putting all the variables on one line. I separated them all into
separate lines and it works!
What I was doing:
exportVar=`
export var1="Foo Bar"
export var2="Bar Foo"
export var3="Far Boo"
...
export var34="ooB raF"
`
fmt.Println(exportVar)
In bash:
myVars=`goSetVar`
eval myVars
myVars would equal all of the lines above on one line. What I did was just
put every line with fmt.Println and that seems to work.
On Thursday, February 2, 2017 at 11:23:49 AM UTC-5, Rich wrote:
>
> Hi All,
>
> My dev team did a very bad thing and issued lots of scripts that they
> wrote source a file that is in clear text which contains usernames /
> passwords etc. Without having to re-write a ton of existing bash scripts,
> I wanted to use Go and have that set the usernames / passwords and
> introduce some user validation etc. Is there a way for Go to set
> environment variables that persist to the script that ran the go program?
> For example:
>
> Go Program SetPass:
>
> package main
>
> import (
> "fmt"
> "os"
>
> )
>
> func main() {
>
> os.Setenv("MyPass","Abc.1234")
>
> }
>
>
>
> Bash Script:
>
> #!/bin/bash
>
> /usr/local/bin/SetPass
>
> echo $MyPass
>
>
> This is a simplistic example, in the real script I'd do things like look
> at the user / groups that are running the program to ensure that they've
> got the rights to run.
>
> Thanks,
>
> Rich
>
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[go-nuts] Re: Pass variables to bash
I don't think you can do what you want to do, precisely.
But, I do think you can solve your problem!
Instead of actually writing to your environment in the Go code (which can
only be seen by *child* processes *of the Go program*!), just print to
stdout.
That is, instead of os.Setenv("MyPass","Abc.1234"), you would just do
fmt.Printf("export %s=%s\n", envVarName, envVarValue),
so the output of the program is lines like
export MyPass=Abc.1234
export somethingelse=thisotherthing
Then take that output and eval it in the shell script.
Example:
osm@Beast:~/test$ echo "#!/bin/sh
> echo export TEST=TRUE
> echo export TEST2=FALSE" > test.sh
osm@Beast:~/test$ cat test.sh
#!/bin/sh
echo export TEST=TRUE
echo export TEST2=FALSE
osm@Beast:~/test$ env | grep TEST
osm@Beast:~/test$ ./test.sh
export TEST=TRUE
export TEST2=FALSE
osm@Beast:~/test$ env | grep TEST
osm@Beast:~/test$ eval "$(./test.sh)"
osm@Beast:~/test$ env | grep TEST
TEST=TRUE
TEST2=FALSE
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[go-nuts] Re: Pass variables to bash
this :
http://craigwickesser.com/2015/02/golang-cmd-with-custom-environment/ ?
On Thursday, February 2, 2017 at 5:23:49 PM UTC+1, Rich wrote:
>
> Hi All,
>
> My dev team did a very bad thing and issued lots of scripts that they
> wrote source a file that is in clear text which contains usernames /
> passwords etc. Without having to re-write a ton of existing bash scripts,
> I wanted to use Go and have that set the usernames / passwords and
> introduce some user validation etc. Is there a way for Go to set
> environment variables that persist to the script that ran the go program?
> For example:
>
> Go Program SetPass:
>
> package main
>
> import (
> "fmt"
> "os"
>
> )
>
> func main() {
>
> os.Setenv("MyPass","Abc.1234")
>
> }
>
>
>
> Bash Script:
>
> #!/bin/bash
>
> /usr/local/bin/SetPass
>
> echo $MyPass
>
>
> This is a simplistic example, in the real script I'd do things like look
> at the user / groups that are running the program to ensure that they've
> got the rights to run.
>
> Thanks,
>
> Rich
>
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