bash 为什么我的脚本的输出显示“mv: command not found”，但当我直接在 shell 上运行它时却没有？
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Why does the output from my script say "mv: command not found" but not when I run it on the shell directly?
提问by Simona
I wrote a small script that should rename some files in a directory for me.
我写了一个小脚本，应该为我重命名目录中的一些文件。
#!/bin/bash
a=1
for i in *.jpg ; do
new=$(printf "%04d.jpg" "$a")
mv "$i" "$new"
let a=a+1
done
#end of file
After running the script is says this: "mv: command not found"
运行脚本后是这样说的：“mv: command not found”
How come there are no error outputs when I run the code directly on the shell like this:
当我像这样直接在 shell 上运行代码时，为什么没有错误输出：
for i in *.jpg ; do new=$(printf "%04d.jpg" "$a") ; mv $i $new ; let a=a+1 ; done
回答by Basile Starynkevitch
It probably is a matter of PATHsetting. The /bindirectory should be inside your $PATH
这可能是PATH设置的问题。该/bin目录应该在您的$PATH
For debugging purposes, add
出于调试目的，添加
echo PATH is $PATH
at start of your script, and perhaps put #!/bin/bash -vxas your script's first line. See this, execve(2), bash(1).
在你的脚本的开头，也许放在#!/bin/bash -vx你的脚本的第一行。看到这个，execve(2)，bash(1)。
As a workaround, replace
作为解决方法，更换
mv "$i" "$new"
with
和
/bin/mv "$i" "$new"
See mv(1)
