如何指向之前的版本？

Question

我的服务器上的默认 gpg 是 1.4.20。但为了做一些实验，我需要安装gpg版本1.4.13。

我执行以下命令：

   ./configure 
   make 
   make install

此时gpg已安装在默认目录( /usr/local/bin/gpg)中。当我使用时gpg --version，我发现指向的版本是1.4.13.我希望它指向原始的 1.4.20 版本（在/usr/bin/gpg文件夹下）。我应该怎么办？

(base) :~$ type gpg
gpg is /usr/local/bin/gpg
(base) :~$ gpg --version
gpg (GnuPG) 1.4.13
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: ~/.gnupg
Supported algorithms:
Pubkey: RSA, RSA-E, RSA-S, ELG-E, DSA
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
        CAMELLIA128, CAMELLIA192, CAMELLIA256
Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Compression: Uncompressed, ZIP, ZLIB
(base) :~$
(base) :~$
(base) :~$ /usr/bin/gpg --version
gpg (GnuPG) 1.4.20
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: ~/.gnupg
Supported algorithms:
Pubkey: RSA, RSA-E, RSA-S, ELG-E, DSA
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
        CAMELLIA128, CAMELLIA192, CAMELLIA256
Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Compression: Uncompressed, ZIP, ZLIB, BZIP2