07_02bash脚本编程之六-使用脚本选项及组合条件测试

添加10个用户

#!/bin/bash 
if [ $# -ne 1 ];then 
  echo "Usager:./uad.sh --add or --del." 
  exit 5 
fi 
 
if [ $1 == '--add' ];then 
    for x in `seq 10`;do 
      if id user$x &>/dev/null ;then 
 echo "user$x exited" 
      else  
 useradd -m user$x && echo "user$x" | passwd --stdin user$x &>/dev/null && echo "user$x founded" 
      fi 
    done 
elif [ $1 == '--del' ];then 
    for x in `seq 10`;do 
 if id user$x &>/dev/null ;then 
 userdel -r user$x && echo "user$x deleted" 
 else  
 echo "user$x not found" 
 fi 
    done 
else 
 echo "Unknown wrong" 
 exit 6 
fi 

添加用户debian,gentoo,ubuntu

#!/bin/bash 
if [ $1 == add ];then 
    for x in `echo $2 | sed 's/,/ /g'`;do 
 if id $x &>/dev/null;then 
 echo "$x had exited" 
 else  
 useradd -m $x && echo "$x" | passwd --stdin $x  &>/dev/null&& echo "$x founded successful" 
 fi 
    done 
elif [ $1 == del ];then 
    for x in `echo $2 | sed 's/,/ /g'`;do 
 if id $x &>/dev/null;then 
 userdel -r $x && echo " $x deleted successful" 
 else 
 echo "No such user" 
 
  fi 
    done 
else 
 echo "Usage:./uad3.sh add or del user1,user2,user3..." 
fi

如何设置多个条件

if [ $# -gt 1 -a $# -le 3 ] 
if [　$# -gt 1] && [ $# -le 3 ]

当用户输入q或Q或quit或Quit:退出

 if [ $1 == 'q' -o 'Q' -o 'quit' -o 'Quit' ];then 
 echo "Quiting" 
 exit 0 
else 
 echo "Unknown Error" 

赏

谢谢你请我吃糖果

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