[英]How Do I Separate a Line of Bash Script Over Multiple Lines?
So I've created this ping sweep in a bash terminal, but I want to make a neat looking script file for this: 因此,我在bash终端中创建了此ping扫描,但是我想为此编写一个简洁的脚本文件:
for IPs in 192.168.0.{1..254}; do ping -c1 -W1 $IPs; done | grep -B1 "1 received" | grep "192.168.0" | cut -d " " -f2 > BashPingSweep.txt
I think I have the for loop correct, but I cant pipe the for loop into the other greps and cut then output. 我认为我的for循环是正确的,但是我无法将for循环传送到其他收集器中,然后剪切然后输出。 This is what I have now:
这就是我现在所拥有的:
#!/bin/bash
for IPs in 192.168.0.{1..254}
do
ping -c1 -W1 $IPs
done
grep -B1 "1 received"
grep "192.168.0"
cut -d " " -f2
> BashPingSweep.txt
You could try this: 您可以尝试以下方法:
#!/bin/bash
for IP in 192.168.0.{1..254}
do
ping -c1 -W1 $IP
done |
grep -B1 "1 received" |
grep "192.168.0" |
cut -d " " -f2 \
> BashPingSweep.txt
It looks a bit awkward but it's a common way to format a lengthy pipe over multiple lines. 看起来有点尴尬,但这是在多行上格式化长管道的一种常用方法。 You could also put it like this:
您也可以这样说:
for IP in 192.168.0.{1..254}
do
ping -c1 -W1 $IP
done \
| grep -B1 "1 received" \
| grep "192.168.0" \
| cut -d " " -f2 \
> BashPingSweep.txt
which is what I prefer because it's easier to see where the pipe goes. 这是我更喜欢的,因为它更容易查看管道的位置。
You need to pipe it inside the for loop 您需要将其管道传递给for循环
for IPs in 192.168.0.{1..254};
do
ping -c1 -W1 $IPs | grep -B1 "1 .* received" | grep "192.168.0" | cut -d " " -f2 > BashPingSweep.txt
done
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