bash cat 无法打开文件
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cat can not open a file
提问by vikas ramnani
In a script (Say myScript.ksh) I have a variable which contains path to a file.
在脚本（比如 myScript.ksh）中，我有一个包含文件路径的变量。
file=/home/vikas/input.ksh
in my code a need something from that file so I am doing a normal cat and grep on this file by doing something like this
在我的代码中，需要该文件中的某些内容，因此我正在通过执行以下操作在该文件上执行普通 cat 和 grep
myVariable=`cat $file | grep "on this line" | cut -d"'" -f2`
Now everytime I launch myScript.ksh, I get a error
现在每次启动 myScript.ksh 时，我都会收到错误消息
cat: cannot open /home/vikas/input.ksh
But if I do same thing direcly on terminal I am able to see content of the file input.ksh
但是如果我直接在终端上做同样的事情，我就能看到文件 input.ksh 的内容
I dont know what I am doing wrong, can somebody please help me ?
我不知道我做错了什么，有人可以帮助我吗？
采纳答案by vikas ramnani
yeah finally the problem solved, though I found the solution weired and could not understand why it worked. Actually I was reading this variable from some other file and it was something like this
是的，问题终于解决了，尽管我发现解决方案很奇怪并且无法理解它为什么起作用。实际上我是从其他文件中读取这个变量，它是这样的
file=$HOME/vikas/input.ksh
the problem was with $HOME what I did I removed $HOME from variable file and added that again by doing this
问题出在 $HOME 我所做的我从变量文件中删除了 $HOME 并通过这样做再次添加了它
file=`echo $file | awk 'BEGIN { FS="/"; OFS="/" } {=""; print file=/home/vikas/input.ksh
}'`
file=$HOME$file
and after that I did the cat $file and it worked
之后我做了 cat $file 并且它起作用了
回答by Miquel
Try and flip your slashes, Linux uses /instead of \
尝试翻转你的斜线，Linux 使用/而不是\
回答by Wug
Use forward slashes, not backslashes
使用正斜杠，而不是反斜杠
ls -l /home/vikas/input.ksh
Edit: OK, so that wasn't the problem.
编辑：好的，所以这不是问题。
Here's what we know at this point:
这是我们目前所知道的：
- He's using the correct slash.
- If he hardcodes the filename, the script works.
- Script is running as a different user (I think?).
- 他正在使用正确的斜线。
- 如果他对文件名进行了硬编码，则脚本会起作用。
- 脚本以不同的用户身份运行（我认为？）。
Please indicate which user the script runs as, and post the output of:
请指明脚本以哪个用户身份运行，并发布以下输出：
##代码##Also, what is the output of file myScript.ksh?
另外，输出是file myScript.ksh什么？
