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Create a script to add users Create a script named /root/mkusers on the system1, this script can achieve to add local users for the system1, and user names of these users are all from a file which contains the usernames list, and meet the following requirements at the same time: 1. This script is required to provide a parameter; this parameter is the file which contains the usernames list 2. This script need provide the following message: Usage：/root/mkusers if it does not provide a parameter, then exit and return the corresponding value 3. This script need provide the following message: Input file not found if it provides a name that does not exist, then exit and return the corresponding value 4. Create a user shell log into /bin/false 5. This script does not need to set password for users 6. You can get the usernames list from the following URL as a test: http://rhgls. domain11.example.com/ materials/ userlist
Correct Answer:
See Explanation Explanation/Reference: vim mkusers.sh #! /bin/bash if [ $# -eq 0 ];then echo 'Usage:/root/mkusers' exit 1 fi if [ ! -f $1 ]; then echo 'Input file not found' exit fi while read line do useradd -s /bin/false $line done < $1 : wq chmod +x mkusers.sh wget http://rhgls.domain11.example.com/materials/userlist ./mkusers.sh userlist
