python - 子进程命令和输出（linux 命令）

Question

I have a command as follows, it gives me the cpu, memory and disk sizes in the linux system. I want to embed it in python code and get output.

But somehow I could not use escape characters properly and get output. What is the most practical way you use for this?

echo "CPU `LC_ALL=C top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1}'`% RAM `free -m | awk '/Mem:/ { printf("%3.1f%%", $3/$2*100) }'` HDD `df -h /store | awk '/\// {print $(NF-1)}'`"

(We can ignore the echo.)

Thanks.

Answer 1

尝试将 ar 放在命令字符串之前，如下所示：

r"CPU `LC_ALL=C top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1}'`% RAM `free -m | awk '/Mem:/ { printf("%3.1f%%", $3/$2*100) }'` HDD `df -h /store | awk '/\// {print $(NF-1)}'`"