分隔符替换

hnlwdian

谢谢各位牛哥

seesea2517

zooyo 发表于 2012-01-31 13:01
来个简单的吧.

借花献佛，借鸡下蛋：

1. [seesea@test]$ echo "123" | sed 's/\B/,/g'
   
2. 1,2,3

复制代码

我在想着 tr 是不是可以实现，不过没找到合适的字符集。。。

1. Usage: tr [OPTION]... SET1 [SET2]
   
2. Translate, squeeze, and/or delete characters from standard input,
   
3. writing to standard output.
   
4. 
   
5.   -c, -C, --complement    first complement SET1
   
6.   -d, --delete            delete characters in SET1, do not translate
   
7.   -s, --squeeze-repeats   replace each input sequence of a repeated character
   
8.                             that is listed in SET1 with a single occurrence
   
9.                             of that character
   
10.   -t, --truncate-set1     first truncate SET1 to length of SET2
    
11.       --help     display this help and exit
    
12.       --version  output version information and exit
    
13. 
    
14. SETs are specified as strings of characters.  Most represent themselves.
    
15. Interpreted sequences are:
    
16. 
    
17.   \NNN            character with octal value NNN (1 to 3 octal digits)
    
18.   \\              backslash
    
19.   \a              audible BEL
    
20.   \b              backspace
    
21.   \f              form feed
    
22.   \n              new line
    
23.   \r              return
    
24.   \t              horizontal tab
    
25.   \v              vertical tab
    
26.   CHAR1-CHAR2     all characters from CHAR1 to CHAR2 in ascending order
    
27.   [CHAR*]         in SET2, copies of CHAR until length of SET1
    
28.   [CHAR*REPEAT]   REPEAT copies of CHAR, REPEAT octal if starting with 0
    
29.   [:alnum:]       all letters and digits
    
30.   [:alpha:]       all letters
    
31.   [:blank:]       all horizontal whitespace
    
32.   [:cntrl:]       all control characters
    
33.   [:digit:]       all digits
    
34.   [:graph:]       all printable characters, not including space
    
35.   [:lower:]       all lower case letters
    
36.   [:print:]       all printable characters, including space
    
37.   [:punct:]       all punctuation characters
    
38.   [:space:]       all horizontal or vertical whitespace
    
39.   [:upper:]       all upper case letters
    
40.   [:xdigit:]      all hexadecimal digits
    
41.   [=CHAR=]        all characters which are equivalent to CHAR

复制代码