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标题: 对所有程序文件的字符都转换为小写的脚本，有一个问题，请大家帮忙。 [打印本页]
作者: 灿烂小猪    时间: 2013-05-29 13:11
标题: 对所有程序文件的字符都转换为小写的脚本，有一个问题，请大家帮忙。
脚本如下：
  1. #!/bin.bash

  3. find /cygdrive/d/max/ -type f -name *.html > list.txt

  5. for i in $(cat list.txt)
  6. do
  7. cat "$i" | tr '[A-Z]' '[a-z]' > "$i"
  8. echo $i
  9. done
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list.txt如下:
  1. /cygdrive/d/max/basicDo.html
  2. /cygdrive/d/max/bdzx/app/expepf_return.html
  3. /cygdrive/d/max/bdzx/applyep - 副本.html
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脚本执行到/cygdrive/d/max/bdzx/applyep - 副本.cfm这个文件就过不去了。原因是有空格，for又分出来了-和副本.html。请问大家，在for中怎样把/cygdrive/d/max/bdzx/applyep - 副本.html这一行变成一个变量呢？另外，转换所有程序文件大小写有没有其他办法？不吝赐教，谢谢了。
作者: rdcwayx    时间: 2013-05-29 13:33
  1. find /cygdrive/d/max/ -type f -name *.html > list.txt

  3. while read i
  4. do
  5. cat "${i}" | tr '[A-Z]' '[a-z]' > "${i}"
  6. echo ${i}
  7. done < list.txt
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作者: 灿烂小猪    时间: 2013-05-29 13:34
哇，谢谢了。我试试
作者: dn833    时间: 2013-05-29 13:38
  1. echo "ABcdEF"|sed 's/[A-Z]/\l&/g'
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作者: 灿烂小猪    时间: 2013-05-29 13:49
你好的，你的sed我没看明白，请指导一下吧。

回复 4# dn833


   
作者: lbseraph    时间: 2013-05-29 13:54
sed的那是正则了~不过挺好用
作者: 灿烂小猪    时间: 2013-05-29 13:59
本帖最后由 灿烂小猪 于 2013-05-29 14:00 编辑

回复 6# lbseraph


是的，sed s/[A-Z]/匹配大写字母\l&这一块没看明白。\l是把&（匹配到的大写字母）转为小写么？   
作者: lbseraph    时间: 2013-05-29 14:10
本帖最后由 lbseraph 于 2013-05-29 14:10 编辑
灿烂小猪 发表于 2013-05-29 13:59
回复 6# lbseraph


对的，而\u是把匹配到的小写转换成大写。

参考链接：
http://www.cnblogs.com/cbscan/articles/2277351.html
作者: 灿烂小猪    时间: 2013-05-29 14:51
晓得了，谢谢哈。
作者: dn833    时间: 2013-05-29 15:11
回复 5# 灿烂小猪


    把所有大写字母变成小写。就这一个l=lowercase
用info sed命令，第3.5章节s替换参数里有详细介绍
  1. 3.5 The `s' Command
  2. ===================

  4. The syntax of the `s' (as in substitute) command is
  5. `s/REGEXP/REPLACEMENT/FLAGS'.  The `/' characters may be uniformly
  6. replaced by any other single character within any given `s' command.
  7. The `/' character (or whatever other character is used in its stead)
  8. can appear in the REGEXP or REPLACEMENT only if it is preceded by a `\'
  9. character.

  11.    The `s' command is probably the most important in `sed' and has a
  12. lot of different options.  Its basic concept is simple: the `s' command
  13. attempts to match the pattern space against the supplied REGEXP; if the
  14. match is successful, then that portion of the pattern space which was
  15. matched is replaced with REPLACEMENT.

  17.    The REPLACEMENT can contain `\N' (N being a number from 1 to 9,
  18. inclusive) references, which refer to the portion of the match which is
  19. contained between the Nth `\(' and its matching `\)'.  Also, the
  20. REPLACEMENT can contain unescaped `&' characters which reference the
  21. whole matched portion of the pattern space.  Finally, as a GNU `sed'
  22. extension, you can include a special sequence made of a backslash and
  23. one of the letters `L', `l', `U', `u', or `E'.  The meaning is as
  24. follows:

  26. `\L'
  27.      Turn the replacement to lowercase until a `\U' or `\E' is found,

  29. `\l'
  30.      Turn the next character to lowercase,

  32. `\U'
  33.      Turn the replacement to uppercase until a `\L' or `\E' is found,

  35. `\u'
  36.      Turn the next character to uppercase,

  38. `\E'
  39.      Stop case conversion started by `\L' or `\U'.
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作者: seesea2517    时间: 2013-05-29 18:02
lz 的问题其实是文件名带空格用来 for 会出事嘛，所以针对性的改的话：

  2. [seesea@UC ~]$ cat file
  3. /cygdrive/d/max/basicDo.html
  4. /cygdrive/d/max/bdzx/app/expepf_return.html
  5. /cygdrive/d/max/bdzx/applyep - 副本.html

  7. [seesea@UC ~]$ for i in $(cat file); do echo $i; done;
  8. /cygdrive/d/max/basicDo.html
  9. /cygdrive/d/max/bdzx/app/expepf_return.html
  10. /cygdrive/d/max/bdzx/applyep
  11. -
  12. 副本.html

  14. [seesea@UC ~]$ IFS=\n'; for i in $(cat file); do echo $i; done;  
  15. /cygdrive/d/max/basicDo.html
  16. /cygdrive/d/max/bdzx/app/expepf_return.html
  17. /cygdrive/d/max/bdzx/applyep - 副本.html
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作者: 灿烂小猪    时间: 2013-05-29 22:42
回复 11# seesea2517

真太感谢了，你的办法也非常不错。



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