1.使用sed命令
sed 's/ / /g' file name >filename_new
2.使用tr命令
cat filename | tr " " " " >filename_new
3.col -x命令
cat filename | col -x >filename_new
sed 's/ / /g' file name >filename_new
cat filename | tr " " " " >filename_new
cat filename | col -x >filename_new