How to AutoFit Column Width or Height in Excel

Click the "Format" drop-down menu in the "Cells" group of the "Home" tab.
Select the "AutoFit Column Width" option in the "Cell Size" section.

or "AutoFit Row Height"

That's easy!

sed 去掉windows下的回车符

用 sed 去掉 去掉windows下的回车符
 （注意^M 在linux 下写法 按^M 是回车换行符,输入方法是按住CTRL+v,松开v,按m)
sed -i 's/^M//g' df.txt  

word swith field

Switch field codes [Alt]+[F9]