bengan的专栏

1.去掉所有行的空格 sed -i 's/ //g' source.txt 2.去掉空行 sed -e '/^$/d' source.txt >result.txt 3.去掉windows与linux下文本中区别--^M sed -e 's/^M//g' source.txt >result.txt 4.去除字符串前后空格（字符串中间的保留） str=`echo "$str"|sed...

Vi: Search and Replace Change to normal mode with . Search (Wraped around at end of file): Search STRING forward : / STRING. Search STRING backward: ? STRING. Repeat search: n...