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Different shells have different syntax for achieving this.

In bash, you use variable indirection:

printf '%s\n' "${!env_name}"

In ksh, you use nameref aka typeset -n:

nameref env_name=GOPATH
printf '%s\n' "$env_name"

In zsh, you use P parameter expansion flag:

print -rl -- ${(P)env_name}

In other shell, you must use eval, which put you under many security implications if you're not sure the variable content is safe:

eval "echo \"\$$name_ref\""

Different shells have different syntax for achieving this.

In bash, you use variable indirection:

printf '%s\n' "${!env_name}"

In ksh, you use nameref aka typeset -n:

nameref env_name=GOPATH
printf '%s\n' "$env_name"

In zsh, you use P parameter expansion flag:

print -rl -- ${(P)env_name}

In other shell, you must use eval, which put you under many security implications if you're not sure the variable content is safe:

eval "echo \"\$$name_ref\""

Different shells have different syntax for archiving this.

In bash, you use variable indirection:

printf '%s\n' "${!env_name}"

In ksh, you use nameref aka typeset -n:

nameref env_name=GOPATH
printf '%s\n' "$env_name"

In zsh, you use P parameter expansion flag:

print -rl -- ${(P)env_name}

In other shell, you must use eval, which put you under many security implications if you're not sure the variable content is safe:

eval "echo \"\$$name_ref\""

Different shells have different syntax for achieving this.

In bash, you use variable indirection:

printf '%s\n' "${!env_name}"

In ksh, you use nameref aka typeset -n:

nameref env_name=GOPATH
printf '%s\n' "$env_name"

In zsh, you use P parameter expansion flag:

print -rl -- ${(P)env_name}

In other shell, you must use eval, which put you under many security implications if you're not sure the variable content is safe:

eval "echo \"\$$name_ref\""

Different shells have different syntax for archiving this.

In bash, you use variable indirection:

printf '%s\n' "${!env_name}"

In ksh, you use nameref aka typeset -n:

nameref env_name=GOPATH
printf '%s\n' "$env_name"

In zsh, you use P parameter expansion flag:

print -rl -- ${(P)env_name}

In other shell, you must use eval, which put you under many security implications if you're not sure the variable content is safe:

eval "echo \$$name_ref"

Different shells have different syntax for archiving this.

In bash, you use variable indirection:

printf '%s\n' "${!env_name}"

In ksh, you use nameref aka typeset -n:

nameref env_name=GOPATH
printf '%s\n' "$env_name"

In zsh, you use P parameter expansion flag:

print -rl -- ${(P)env_name}

In other shell, you must use eval, which put you under many security implications if you're not sure the variable content is safe:

eval "echo \"\$$name_ref\""