grep能做到这个么?

javashell

搜索一段内容（多行）

比如我，
grep "abc\nefg" filename

这样好像不行，直接无结果

waker

grep -FA1 abc filename|grep -FB1 efg

waker

grep -A1 abc\$ filename|grep -B1 ^efg

订正一下

jason680

回复 1# javashell

$ cat filename
abc
efg
abcddd
efg
abc 123
efg
abc
123 efg
abc
efg


$ awk -vk1="abc" -vk2="efg" '{c++}$0~k1"$"{c++;getline n;if(match(n,"^"k2))print c-1":"$0"\n"c":"n}' filename
1:abc
2:efg
9:abc
10:efg

$ awk -vk1="abc" -vk2="efg" '{c++}$0~k1{c++;getline n;if(match(n,"^"k2))print c-1":"$0"\n"c":"n}' filename
1:abc
2:efg
3:abcddd
4:efg
5:abc 123
6:efg
9:abc
10:efg
jason@jason-VirtualBox:~/tmp
$ awk -vk1="abc" -vk2="efg" '{c++}$0~k1{c++;getline n;if(match(n,k2))print c-1":"$0"\n"c":"n}' filename
1:abc
2:efg
3:abcddd
4:efg
5:abc 123
6:efg
7:abc
8:123 efg
9:abc
10:efg

   

g_programming

1. sed -n '/abc$/{N;/abc\nefg/p;D;}' tt1.txt

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xiekai_aiai

oracle@RMC-A3:~> cat filename
ab
cd
oracle@RMC-A3:~> grep -P "ab\ncd" filename
ab
cd

winway1988

1. awk '/abc$/{getline nxt;if(nxt~/^efg/)block=block?block ORS $0 ORS nxt:$0 ORS nxt;else next;while(nxt~/abc$/){getline nxt;if(nxt~/^efg/)block=block ORS nxt;}print block;block=nxt=""}' urfile

复制代码