(base) xutengfei@xutengfei-G3-3579:~$ vim trypythoninshell.sh
(base) xutengfei@xutengfei-G3-3579:~$ sh trypythoninshell.sh
trypythoninshell.sh: 2: Syntax error: word unexpected (expecting ")")
(base) xutengfei@xutengfei-G3-3579:~$ chmod +X trypythonshell.sh
chmod: 无法访问 'trypythonshell.sh': 没有那个文件或目录
(base) xutengfei@xutengfei-G3-3579:~$ ./trypythonshell.sh
bash: ./trypythonshell.sh: 没有那个文件或目录
(base) xutengfei@xutengfei-G3-3579:~$ trypythoninshell.sh
trypythoninshell.sh：未找到命令
(base) xutengfei@xutengfei-G3-3579:~$ vim ./trypythoninshell.sh
(base) xutengfei@xutengfei-G3-3579:~$ chmod +X ./trypythonshell.sh
chmod: 无法访问 './trypythonshell.sh': 没有那个文件或目录
(base) xutengfei@xutengfei-G3-3579:~$
我犯什么错了吗