01:shell Basic Use

1.1 Write a login welcome script

(1a new script file, welcome.sh, is used to output various monitoring information. [[Email protected]~]#vi/root/welcome.sh#!/bin/bashEcho"Number of open processes: $ (PS aux | wc-l)"Echo"number of logged-in users: $ (who | wc-l)"Echo"root Partition Disk usage: $ (df-h | grep"/$"| awk ' {print $4} ')"[[Email protected]~]#chmod +x/root/welcome.sh(2) Modify/root/. bash_profile file, call the welcome.sh script program. [[Email protected]~]#Vi/root/.bash_profile#Add this statement at the end of the file/root/welcome.sh (3log back in with the root user to verify the output information for the welcome script. Last Login:mon Feb26 14:52:41 2018 from1.1.1.100Number of open processes:183number of logged-in users:4root partition disk idle:7.4G

Write a login welcome script

01:shell Basic Use