perl小程序
#!/usr/bin/perl $count=0;while($count < 100){
print "\n\n\n\n";
print "please input password: \n";
$count+=2;
#print "$count \n";
$ftp=1;
$news=2;
$zhaoyun=3;
$postfix=4;
$oracle=5;
$ntp=6;
$line=;
if($line eq "$ftp\n"){
print "ftp \n";
$a=`cat /etc/passwd |grep ftp | sed -n 1p`;
print $a;}else{
if($line eq "$news\n"){
$a=`cat /etc/passwd |grep news | head -n 1`;
print $a;
print "news \n";}else{
if($line eq "$zhaoyun\n"){
$a=`cat /etc/passwd |grep zhaoyun | head -n 1`;
print $a;
print "zhaoyun \n";}else{
if($line eq "$postfix\n"){
$a=`cat /etc/passwd |grep postfix | head -n 1`;
print $a;
print "postfix \n";}else{
if($line eq "$oracle\n"){
$a=`cat /etc/passwd |grep oracle | head -n 1`;
print $a;
print "oracle \n";
}else{
if($line eq "quit\n"){
exit;}else{
if($line eq "$ntp\n"){
$a=`cat /etc/passwd |grep ntp | head -n 1`;
print $a;
print "ntp \n";}else{
print "password input error! \n";
}
}
}
}
}
}
}
}
实现输入对应的数字，打印相应的内容。
# ./test
please input password:
1
ftp
ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
please input password:
2
news:x:9:13:news:/etc/news:
news
please input password:
3
zhaoyun:x:500:501::/home/zhaoyun:/bin/bash
zhaoyun
please input password:
fd
password input error!
please input password:
quit
#
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