Tips for linux

Tips for using linux-general Linux technology-Linux technology and application information. When reading the documents below DOS in Linux, it is found that there is a ^ M more than the end of the line, you can use the following command to remove

: % S/^ M/g

In fact, it is a simple replacement command, but that ^ M is not directly input, but should press Ctrl + V + M at the same time.

Add one to one characters to each line of the file.

: % S/^/somestrings/g

You can use

: % S/$/somestrings/g

This actually uses a regular expression, because in a regular expression, ^ indicates the beginning of a row, and $ indicates the end of a row.

These two tricks are mainly used to download files in batches and then copy or move the files.