Linux Learning _ Essay: Output redirection > Log, due to too much print content, no complete information is displayed on the Linux terminal

When debugging code, we often use the print statement to debug. Sometimes, however, there is no complete information on the Linux terminal due to the excessive amount of content being printed.

1, at this time we can use the command: ./test > Log or./test >> log

This will print all the correct information to the log, and the incorrect information will be printed to the terminal.

Annotations:

(1) > is directed output to a file, if the file does not exist, create a file, if the file exists, it is emptied; generally, when we back up the cleanup log file, it is this method: first back up the log, and then use ' > ', the log file is emptied (the file size becomes 0 bytes);

(2) >> This is to append the output to the destination file. If the file does not exist, the file is created, and if the file exists, the new content is appended to the end of the file, and the original content in the file is not affected.

Linux Learning _ Essay: Output redirection > Log, due to too much print content, no complete information is displayed on the Linux terminal