bash 来源：在shell脚本中找不到？
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source: not found in shell script?
提问by roger
I want to activate a virtual env in shell script, so I write a simple script as follow:
我想在shell脚本中激活一个虚拟环境，所以我写了一个简单的脚本如下：
#!/bin/bash
source ~/env/lib/bin/activate
#nohup python mock_run.py
#echo $! > save_pid.txt
I start the script with sh start.sh, but I got error as follow:
我用 启动脚本sh start.sh，但出现如下错误：
start.sh: 3: start.sh: source: not found
I run source ~/env/lib/bin/activateis ok, so why can not in shell script?
我运行source ~/env/lib/bin/activate没问题，为什么不能在shell脚本中？
回答by hek2mgl
Note that the shebangline:
请注意shebang行：
#!/bin/bash
is not in effect when you invoke the script with
当您调用脚本时无效
sh script.sh
The shebang is in effect only if you call the script directly, like a binary.
仅当您直接调用脚本时，shebang 才有效，就像二进制文件一样。
You need to either:
您需要：
chmod +x script.sh
./script.sh
to make the shebangline working, or call it explicitly with bash:
使shebang行工作，或使用 bash 显式调用它：
bash script.sh
