Tonight we give Liu talked about doing a chapter ending, when it comes to the for loop statement, is to allow the script to read more information one time, old Liu gave us an example of creating a user; while loop is conditional , let the script based on conditions continue the cycle continues; case statements match data in a plurality of ranges; finally said the scheduled tasks command crontab and at, respectively, the fourth chapter; then came the fifth chapter user identity and file permissions, useradd command create a user, userdel delete users, usermod modify user attributes, groupadd create a group, groupdel delete a group, passwd command to change user passwords; and finally talked about file permissions rwx conversion and meaning.
Liu speaks out tonight, examination time, my heart suddenly nervous, after all, is a white, new to the IT industry a year, after all, a little pressure, current thinking is November 1 exam, I hope all goes well.
Liu Website Address: linuxprobe.com