如何从文件中的每一行中删除前导空格 [英] How to remove leading whitespace from each line in a file

问题描述

我有一个看起来像这样的文件:

I have a file that looks something like this:

for (i = 0; i < 100; i++)
    for (i = 0; i < 100; i++)
  for (i = 0; i < 100; i++)
       for (i = 0; i < 100; i++)
     for (i = 0; i < 100; i++)
           for (i = 0; i < 100; i++)
for (i = 0; i < 100; i++)

我希望它看起来像这样(去除缩进):

I want it to look like this (remove indentations):

for (i = 0; i < 100; i++)
for (i = 0; i < 100; i++)
for (i = 0; i < 100; i++)
for (i = 0; i < 100; i++)
for (i = 0; i < 100; i++)
for (i = 0; i < 100; i++)
for (i = 0; i < 100; i++)

如何做到这一点(也许使用 sed ?)?

How can this be done (using sed maybe?)?

推荐答案

sed "s/^[ 	]*//" -i youfile

警告:这将覆盖原始文件.

Warning: this will overwrite the original file.

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