while示例_shell脚本
工作环境：Red Hat Enterprise Linux Server> #!/bin/bash#
awk -F: '{print $1,$3,$7}' /etc/passwd >>passwd.txt
while read name> do
echo "user name:$name"
echo "user uid :$id"
echo "user shell:$shell"
echo
done < passwd.txt
注意：passwd.txt文件的列数一定要大于变量的个数，否则，会报错
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