如何删除换行符,如果它是在一个文件中的最后一个字符? [英] How can I delete a newline if it is the last character in a file?
问题描述
我有一些我想删除最后一个换行符,如果它是在一个文件中的最后一个字符的文件。 'OD -c'显示我,我运行的命令不写一个尾随新行的文件:
0013600ñT> \\ n
我试着SED,但我能想到的最好的是不是做的伎俩一些小技巧:
SED -e'$ S / \\(。* \\)\\ N $ / \\ 1 /'ABC
任何想法如何做到这一点?
的perl -pe'格格如果EOF'的文件名和GT;文件名2
,或编辑文件的地方:
的perl -pi -e'格格如果EOF文件名
[编者注: -pi -e
原是 -pie
,但是,正如所指出一些评论和解释@hvd,后者不能正常工作。]
这被形容为awk的网站,我看到一个perl的亵渎。
不过,在测试中,它的工作。
I have some files that I'd like to delete the last newline if it is the last character in a file. 'od -c' shows me that the command I run does write the file with a trailing new line:
0013600 n t > \n
I've tried a few tricks with sed but the best I could think of isn't doing the trick:
sed -e '$s/\(.*\)\n$/\1/' abc
Any ideas how to do this?
perl -pe 'chomp if eof' filename >filename2
or, to edit the file in place:
perl -pi -e 'chomp if eof' filename
[Editor's note: -pi -e
was originally -pie
, but, as noted by several commenters and explained by @hvd, the latter doesn't work.]
This was described as a 'perl blasphemy' on the awk website I saw.
But, in a test, it worked.
这篇关于如何删除换行符,如果它是在一个文件中的最后一个字符?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!