Question

在下面的例子中，^ [ - 是转义终端输出的转义字符（只需输入ctrl + v + [）。

1）我的档案：

-------- just to mark start of file ----------
^[[1;31mbla bla bla^[[0m



^[[0;36mTREE;01;^[[0m


^[[1;31m^[[0m
^[[1;31m^[[1;31mapple tree:^[[0m^[[0m
^[[1;31m4 apples^M^M^[[0m
^[[1;31m6 leafs^M^[[0m


^[[0;36mTREE;02;^[[0m


^[[0;36mTREE;03;^[[0m

withered

^[[0;36mTREE;04;^[[0m


^[[0;36mTREE;05;^[[0m

^[[0;36mTREE;06;^[[0m

^[[0;36mTREE;07;^[[0m


^[[1;31m^[[0m
^[[1;31m^[[1;31mcherry tree:^[[0m^[[0m
^[[1;31mbig branches^M^M^[[0m
^[[1;31mtchick roots^M^[[0m



^[[0;36mTREE;08;^[[0m


^[[0;36mMy tree ^[[0m I have tree house on it^[[0;31m:-)^[[0m



^[[0;36mTREE;09;^[[0m

-------- just to mark end of file ----------

2）我想摆脱所有＆＃34;空标签＆＃34; - 所有标签都没有评论所以我想要实现的结果是：

-------- just to mark start of results ----------
^[[1;31mbla bla bla^[[0m



^[[0;36mTREE;01;^[[0m


^[[1;31m^[[0m
^[[1;31m^[[1;31mapple tree:^[[0m^[[0m
^[[1;31m4 apples^M^M^[[0m
^[[1;31m6 leafs^M^[[0m


^[[0;36mTREE;03;^[[0m

withered

^[[0;36mTREE;07;^[[0m


^[[1;31m^[[0m
^[[1;31m^[[1;31mcherry tree:^[[0m^[[0m
^[[1;31mbig branches^M^M^[[0m
^[[1;31mtchick roots^M^[[0m



^[[0;36mTREE;08;^[[0m


^[[0;36mMy tree ^[[0m I have tree house on it^[[0;31m:-)^[[0m



-------- just to mark end of results ----------

3）我这样做：

pcregrep -M 'TREE.*\n(\n|\s)+(?=.*TREE|\z)' my_file

它按预期工作 - 它只留下没有评论的标签

-------- just to mark start of results ----------
^[[0;36mTREE;02;^[[0m


^[[0;36mTREE;04;^[[0m


^[[0;36mTREE;05;^[[0m

^[[0;36mTREE;06;^[[0m

^[[0;36mTREE;09;^[[0m

-------- just to mark end of results ----------

4）但命令：

pcregrep -Mv 'TREE.*\n(\n|\s)+(?=.*TREE|\z)' my_file

产品＆＃34;有线结果＆＃34;我不明白。

*）如何得到我想要的结果？
使用任何工具：pcregrep，ag，ack，sed，awk，...

Answer 1

我提出的最简单，也可能是最愚蠢的解决方案：

[steelrat@archlinux ~]$ awk '/TREE/ {f=$0;p=1} !/^ *$/&&!/TREE/ {if (p==1) {print f; p=0} print $0}' my_file

-------- just to mark start of results ----------
^[[1;31mbla bla bla^[[0m
^[[0;36mTREE;01;^[[0m
^[[1;31m^[[0m
^[[1;31m^[[1;31mapple tree:^[[0m^[[0m
^[[1;31m4 apples^M^M^[[0m
^[[1;31m6 leafs^M^[[0m
^[[0;36mTREE;03;^[[0m
withered
^[[0;36mTREE;07;^[[0m
^[[1;31m^[[0m
^[[1;31m^[[1;31mcherry tree:^[[0m^[[0m
^[[1;31mbig branches^M^M^[[0m
^[[1;31mtchick roots^M^[[0m
^[[0;36mTREE;08;^[[0m
^[[0;36mMy tree ^[[0m I have tree house on it^[[0;31m:-)^[[0m
-------- just to mark end of results ----------

如果你需要空格（需要一些额外的工作来摆脱空白部分的空间）：

$ awk '/^ *$/ {print $0} /TREE/ {f=$0;p=1} !/^ *$/&&!/TREE/ {if (p==1) {print f; p=0} print $0}' my_file

-------- just to mark start of results ----------
^[[1;31mbla bla bla^[[0m





^[[0;36mTREE;01;^[[0m
^[[1;31m^[[0m
^[[1;31m^[[1;31mapple tree:^[[0m^[[0m
^[[1;31m4 apples^M^M^[[0m
^[[1;31m6 leafs^M^[[0m





^[[0;36mTREE;03;^[[0m
withered







^[[0;36mTREE;07;^[[0m
^[[1;31m^[[0m
^[[1;31m^[[1;31mcherry tree:^[[0m^[[0m
^[[1;31mbig branches^M^M^[[0m
^[[1;31mtchick roots^M^[[0m





^[[0;36mTREE;08;^[[0m
^[[0;36mMy tree ^[[0m I have tree house on it^[[0;31m:-)^[[0m




-------- just to mark end of results ----------

Answer 2

我做到了。

(1) sed 's/^M//g;
(2) s/$/#VAV#/' my_file | \
(3) paste -sd "" | \
(4) sed 's/^[\[0;36mTREE[[:print:]]\+^[\[0m\(\(#VAV#\)\|\([[:blank:]]\)\|\(^[\[0;36mTREE[[:print:]]\+^[\[0m\)\)*\(\(^[\[0;36mTREE[[:print:]]\+^[\[0m\)\|$\)/\6/g;
(5) s/#VAV#/\n/g'

（1）摆脱如果^ M逃脱焦点 - 它让事情变得不利（2）把一些故意的＆＃34;每行末尾的字符串。
（3）将所有行连接成一个字符串（4）进行适当的正则表达替换（5）将该字符串从点（2）改回到行尾。

摆脱文件中不需要的行

2 个答案:

摆脱文件中不​​需要的行

2 个答案:

摆脱文件中不需要的行