No longer adds snippets to .bashrc, .bash_profile and .profile on subsequent runs of install script.
No longer adds snippets to .bashrc, .bash_profile and .profile on subsequent runs of install script.

jbovet/gvm,nobeans/gvm-cli,DealerDotCom/gvm-cli,skpal/sdkman-cli,GsusRecovery/sdkman-cli,dsyer/gvm,dsyer/gvm,DealerDotCom/gvm-cli,skpal/sdkman-cli,sdkman/sdkman-cli,shanman190/sdkman-cli,busches/gvm-cli,gvmtool/gvm-cli,nobeans/gvm-cli,GsusRecovery/sdkman-cli