The commands which I ran and their outputs are given below -
我运行的命令及其输出如下 -
$ echo $SHELL
/bin/bash
$ whence bash
sh: whence: command not found
$ which bash
/usr/bin/bash
I am not sure which shell I really have. First one says bash and the second says sh. So, which shell is it ? bash or sh ?
我不确定我真的有哪种外壳。第一个说bash，第二个说sh。那么，它是哪个外壳？ bash还是sh？
2 个解决方案
#1
1
This should clarify what you are using:
这应该澄清你在使用什么：
echo $BASH_VERSION
#2
0
Check to make sure that /usr/bin isn't a link to /bin or vice-versa and that /usr/bin/bash isn't a link to /bin/bash or vice versa. It is possible that you are running one binary, /bin/bash, but that your path lists /usr/bin before /bin, in which case, which bash would list /usr/bin/bash - but that only means that /usr/bin/bash is the one you will run if you type bash on the command line. It doesn't mean it is the one you're running.
检查以确保/ usr / bin不是/ bin的链接，反之亦然，/ usr / bin / bash不是/ bin / bash的链接，反之亦然。您可能正在运行一个二进制文件/ bin / bash，但是您的路径在/ bin之前列出/ usr / bin，在这种情况下，哪个bash会列出/ usr / bin / bash - 但这仅表示/ usr / bin / bash是在命令行上键入bash时将运行的那个。这并不意味着它就是你正在运行的那个。
#1
1
This should clarify what you are using:
这应该澄清你在使用什么：
echo $BASH_VERSION
#2
0
Check to make sure that /usr/bin isn't a link to /bin or vice-versa and that /usr/bin/bash isn't a link to /bin/bash or vice versa. It is possible that you are running one binary, /bin/bash, but that your path lists /usr/bin before /bin, in which case, which bash would list /usr/bin/bash - but that only means that /usr/bin/bash is the one you will run if you type bash on the command line. It doesn't mean it is the one you're running.
检查以确保/ usr / bin不是/ bin的链接，反之亦然，/ usr / bin / bash不是/ bin / bash的链接，反之亦然。您可能正在运行一个二进制文件/ bin / bash，但是您的路径在/ bin之前列出/ usr / bin，在这种情况下，哪个bash会列出/ usr / bin / bash - 但这仅表示/ usr / bin / bash是在命令行上键入bash时将运行的那个。这并不意味着它就是你正在运行的那个。