shell通过sed上下两行合并成一行的实现

乘风

1 年前

Table of Contents

一、shell上下两行

1.file

cat file.txt

host1
192.168.0.1
host2
192.168.0.2
host3
192.168.0.3
host4
192.168.0.4
host5
192.168.0.5

2.sed

sed ‘N;s/\n/ :/’ file

# cat file.txt | sed 'N;s/\n/ :/'
host1 :192.168.0.1
host2 :192.168.0.2
host3 :192.168.0.3
host4 :192.168.0.4
host5 :192.168.0.5

二、sed多行

N (next)多行操作命令，文本前后两行合并为一行

# cat file.txt
host11
192.168.0.1
host222
192.168.0.2
host3
192.168.0.3
host44
192.168.0.4
host555
192.168.0.5

# sed 'N;s/\n/ :/' file.txt
host11 :192.168.0.1
host222 :192.168.0.2
host3 :192.168.0.3
host44 :192.168.0.4
host555 :192.168.0.5

使用“制表符”\t对齐边缘

# sed 'N;s/\n/   \t/' file.txt
host11       192.168.0.1
host222       192.168.0.2
host3       192.168.0.3
host44       192.168.0.4
host555       192.168.0.5

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