awk做字符替换

aaaa_123

ｌ⑧ūｐ$$ｘ=
ｙｙ７４８３６３４８２

たちふふつゅなκχγ≠＝≯
︶︿︶Sn?@@@@
вшфидщ00
ифтвкн222
лшддщю5617190
◢ ◣ ◤ ◥890106◢ ◣ ◤ ◥
&é"'(-è_
&é"'(-è_?à
()001898⊙●○①



awk做字符替换  用[^[:print:]]来定需求
awk '{gsub(/[^[:print:]]/,"";print}'  
得不到下面这些需求   请问我错在那
$$=
# ?DAp28
Sn?@@@@
00
222
5617190
   890106   
&"'(-_
&"'(-_?
()001898

WilliBhamlll

1. awk '{gsub(/[^\x20-x7f]/,"")}NF' file
   
2. $=
   
3. Sn?@@@@
   
4. 00
   
5. 222
   
6. 5617190
   
7.    890106
   
8. &"'(-_
   
9. &"'(-_?
   
10. ()001898

复制代码

aaaa_123

回复 2# WilliBhamlll


谢谢
[^\x20-x7f]


请问这个其在什么字符码范围


是不是代表ASCII码中96个编码字符

wh7211

回复 3# aaaa_123


POSIX字符    ASCII语言环境
[:ascii:]    [\x00-\x7F]
[:print:]    [\x20-\x7E]

aaaa_123

回复 4# wh7211

Thank you
[asdfghjklqwertyuiopzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM0123456789`~!@#$%^&*()_+=-{}|[]\:;'<>?,./"空格 tab]

52个字母  啊拉数字10个  英文符号34个

上面没有列出的全部排除


用这个应该可以吧  [\x20-\x7E]

wh7211

回复 5# aaaa_123


文件1内容如下，黄色是空格，绿色是制表符：
a s        dfghjklqwertyuiopzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM0123456789`~!@#$%^&*()_+=-{}|[]\:;'<>?,./"

1. awk -F "" '{for(i=1;i<=NF;i++){gsub(/[\x20-\x7E]/,"",$i);print i,"|"$i"|"}}' 1

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输出为：
1 ||
2 ||
3 ||
4 |        |
5 ||
6 ||
7 ||
8 ||
9 ||
10 ||
11 ||
12 ||
13 ||
14 ||
15 ||
16 ||
17 ||
18 ||
19 ||
20 ||
21 ||
22 ||
23 ||
24 ||
25 ||
26 ||
27 ||
28 ||
29 ||
30 ||
31 ||
32 ||
33 ||
34 ||
35 ||
36 ||
37 ||
38 ||
39 ||
40 ||
41 ||
42 ||
43 ||
44 ||
45 ||
46 ||
47 ||
48 ||
49 ||
50 ||
51 ||
52 ||
53 ||
54 ||
55 ||
56 ||
57 ||
58 ||
59 ||
60 ||
61 ||
62 ||
63 ||
64 ||
65 ||
66 ||
67 ||
68 ||
69 ||
70 ||
71 ||
72 ||
73 ||
74 ||
75 ||
76 ||
77 ||
78 ||
79 ||
80 ||
81 ||
82 ||
83 ||
84 ||
85 ||
86 ||
87 ||
88 ||
89 ||
90 ||
91 ||
92 ||
93 ||
94 ||
95 ||
96 ||

可见[\x20-\x7E]不包含制表符，加上制表符的代码如下：

1. awk -F "" '{for(i=1;i<=NF;i++){gsub(/[\x20-\x7E\t]/,"",$i);print i,"|"$i"|"}}' 1

复制代码

输出为：
1 ||
2 ||
3 ||
4 ||
5 ||
6 ||
7 ||
8 ||
9 ||
10 ||
11 ||
12 ||
13 ||
14 ||
15 ||
16 ||
17 ||
18 ||
19 ||
20 ||
21 ||
22 ||
23 ||
24 ||
25 ||
26 ||
27 ||
28 ||
29 ||
30 ||
31 ||
32 ||
33 ||
34 ||
35 ||
36 ||
37 ||
38 ||
39 ||
40 ||
41 ||
42 ||
43 ||
44 ||
45 ||
46 ||
47 ||
48 ||
49 ||
50 ||
51 ||
52 ||
53 ||
54 ||
55 ||
56 ||
57 ||
58 ||
59 ||
60 ||
61 ||
62 ||
63 ||
64 ||
65 ||
66 ||
67 ||
68 ||
69 ||
70 ||
71 ||
72 ||
73 ||
74 ||
75 ||
76 ||
77 ||
78 ||
79 ||
80 ||
81 ||
82 ||
83 ||
84 ||
85 ||
86 ||
87 ||
88 ||
89 ||
90 ||
91 ||
92 ||
93 ||
94 ||
95 ||
96 ||

再来验证你给的例子。文件2内容如下：
ｌ⑧ūｐ$$ｘ=
ｙｙ７４８３６３４８２

たちふふつゅなκχγ≠＝≯
︶︿︶Sn?@@@@
вшфидщ00
ифтвкн222
лшддщю5617190
◢ ◣ ◤ ◥890106◢ ◣ ◤ ◥
&é"'(-è_
&é"'(-è_?à
()001898⊙●○①

1. awk -F "" '{for(i=1;i<=NF;i++){gsub(/[^\x20-\x7E\t]/,"",$i);print i,"|"$i"|"}}' 2

复制代码

输出为：
1 ||
2 ||
3 ||
4 ||
5 |$|
6 |$|
7 ||
8 |=|
1 ||
2 ||
3 ||
4 ||
5 ||
6 ||
7 ||
8 ||
9 ||
10 ||
11 ||
1 ||
2 ||
3 ||
4 ||
5 ||
6 ||
7 ||
8 ||
9 ||
10 ||
11 ||
12 ||
13 ||
1 ||
2 ||
3 ||
4 |S|
5 |n|
6 |?|
7 |@|
8 |@|
9 |@|
10 |@|
1 ||
2 ||
3 ||
4 ||
5 ||
6 ||
7 |0|
8 |0|
1 ||
2 ||
3 ||
4 ||
5 ||
6 ||
7 |2|
8 |2|
9 |2|
1 ||
2 ||
3 ||
4 ||
5 ||
6 ||
7 |5|
8 |6|
9 |1|
10 |7|
11 |1|
12 |9|
13 |0|
1 ||
2 | |
3 ||
4 | |
5 ||
6 | |
7 ||
8 |8|
9 |9|
10 |0|
11 |1|
12 |0|
13 |6|
14 ||
15 | |
16 ||
17 | |
18 ||
19 | |
20 ||
1 |&|
2 ||
3 |"|
4 |'|
5 |(|
6 |-|
7 ||
8 |_|
1 |&|
2 ||
3 |"|
4 |'|
5 |(|
6 |-|
7 ||
8 |_|
9 |?|
10 ||
1 |(|
2 |)|
3 |0|
4 |0|
5 |1|
6 |8|
7 |9|
8 |8|
9 ||
10 ||
11 ||
12 ||

可见不在96个字符范围内的特殊字符，已经全部删掉了。

aaaa_123

Thank you all