在发现混合制表符和空格后，我使用style重新缩进所有的C/ c++代码。如果您愿意，它还可以强制使用特定的括号样式。

在其他答案中建议的使用expand似乎是仅用于此任务的最合乎逻辑的方法。

也就是说，它也可以用Bash和Awk来完成，以防你想在它的同时做一些其他的修改。

如果使用Bash 4.0或更高版本，shopt内置的globstar可以使用**进行递归搜索。

在GNU Awk 4.1或更高版本中，sed可以像“inplace”一样修改文件:

shopt -s globstar
gawk -i inplace '{gsub("\t","    ")}1' **/*.ext

如果你想设置每个制表符的空格数:

gawk -i inplace -v n=4 'BEGIN{for(i=1;i<=n;i++) c=c" "}{gsub("\t",c)}1' **/*.ext

我的建议是使用:

find . -name '*.lua' -exec ex '+%s/\t/  /g' -cwq {} \;

评论:

Use in place editing. Keep backups in a VCS. No need to produce *.orig files. It's good practice to diff the result against your last commit to make sure this worked as expected, in any case. sed is a stream editor. Use ex for in place editing. This avoids creating extra temp files and spawning shells for each replacement as in the top answer. WARNING: This messes with all tabs, not only those used for indentation. Also it does not do context aware replacement of tabs. This was sufficient for my use case. But might not be acceptable for you. EDIT: An earlier version of this answer used find|xargs instead of find -exec. As pointed out by @gniourf-gniourf this leads to problems with spaces, quotes and control chars in file names cf. Wheeler.

您可以使用通常可用的pr命令(此处的手册页)。例如，要将制表符转换为四个空格，可以这样做:

pr -t -e=4 file > file.expanded

-t抑制头文件 -e=num将制表符扩展为num个空格

递归转换目录树中的所有文件，跳过二进制文件:

#!/bin/bash
num=4
shopt -s globstar nullglob
for f in **/*; do
  [[ -f "$f" ]]   || continue # skip if not a regular file
  ! grep -qI "$f" && continue # skip binary files
  pr -t -e=$num "$f" > "$f.expanded.$$" && mv "$f.expanded.$$" "$f"
done

跳过二进制文件的逻辑来自这篇文章。

注意:

在git或svn repo中这样做可能是危险的 如果您的代码文件在字符串字面值中嵌入了空白制表符，那么这不是正确的解决方案

将目录下的所有Java文件递归转换为4个空格而不是制表符:

find . -type f -name *.java -exec bash -c 'expand -t 4 {} > /tmp/stuff;mv /tmp/stuff {}' \;

将制表符转换为空格只是在”。Lua " files [tab -> 2个空格]

find . -iname "*.lua" -exec sed -i "s#\t#  #g" '{}' \;