bash Shell脚本从txt文件读取变量？
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Shell script read variable from txt file?
提问by jxn
i have a text file that looks like this:
我有一个看起来像这样的文本文件：
test.txt:
测试.txt：
date="2015-01-02"
week="3"
I also have a shell script that takes in the variable form the above text file:
我还有一个 shell 脚本，它采用上述文本文件的变量形式：
test.sh
测试文件
#!/bin/sh
source test.txt
echo $week
When i run ./test.sh, i get this error:
week: command not found
当我运行时./test.sh，我收到此错误：
week: command not found
I thought i could follow this elegant solution here: https://askubuntu.com/questions/367136/how-do-i-read-a-variable-from-a-file
我想我可以在这里遵循这个优雅的解决方案：https: //askubuntu.com/questions/367136/how-do-i-read-a-variable-from-a-file
but it seems like that only works for bash script.
但它似乎只适用于 bash 脚本。
How do i do it for shell script?
我如何为shell脚本做这件事？
回答by jgreve
I think your "source" statement may be having a path issue. Consider the following output:
我认为您的“来源”声明可能存在路径问题。考虑以下输出：
I added a few commands, like ps -f (to convince myself it really was running in sh, not bash). And some echos to indicated what is going on.
我添加了一些命令，比如 ps -f（为了说服自己它确实在 sh 中运行，而不是在 bash 中运行）。还有一些回声表明发生了什么。
(as an after thought, I also tried it with "xyz.txt" instead of "bar.sh", still same behavior.)
（作为事后的想法，我也用“xyz.txt”而不是“bar.sh”尝试了它，仍然是相同的行为。）
output
输出
sh-4.1$ ./foo.sh
--- begin ps ---
UID PID PPID C STIME TTY TIME CMD
userabc 3352 3350 0 18:05 pts/0 00:00:00 /bin/bash
userabc 3523 3352 0 18:09 pts/0 00:00:00 sh
userabc 3778 3523 0 18:18 pts/0 00:00:00 /bin/sh ./foo.sh
userabc 3779 3778 0 18:18 pts/0 00:00:00 ps -f
--- end ps ---
Trying just 'bar.sh'
./foo.sh: line 8: source: bar.sh: file not found
week=
date=
Now trying './bar.sh' (note the leading ./ )
week=3
date=2015-01-02
Done.
sh-4.1$
The big difference is the two source statements; looks like source needs a qualified path. Usually I would just say . ./bar.shbut that is more or less habit because I always use ./whatever.sh to invoke a given shell script.
最大的区别是两个源语句；看起来源需要一个合格的路径。通常我只会说。./bar.sh但这或多或少是习惯，因为我总是使用 ./whatever.sh 来调用给定的 shell 脚本。
Test scripts follow...
测试脚本如下...
foo.sh
文件名
#!/bin/sh
echo --- begin ps ---
ps -f
echo --- end ps ---
echo "Trying just 'bar.sh'"
source bar.sh
echo week=$week
echo date=$date
echo "Now trying './bar.sh' (note the leading ./ )"
source ./bar.sh
echo week=$week
echo date=$date
echo Done.
bar.sh
酒吧.sh
date="2015-01-02"
week="3"
回答by fcnorman
Your test.txt is fine.
你的 test.txt 没问题。
For test.sh, change it to:
对于 test.sh，将其更改为：
#!/bin/bash
source ./test.txt
echo $week
Output is: 3
输出为：3
