debian：除root用户外，所有用户的权限均被拒绝

我今天写了一个bash脚本，它可能会破坏我的某些用户设置和/或权限。现在，我知道在我的实时系统上测试脚本是很愚蠢的;）。

什么不起作用？以root用户以外的其他用户身份运行的每个进程（后缀，ftp，dovecot等）。

编辑：在所有者和权限的情况下，文件夹结构是多种多样的。因此，看起来好像我没有在根目录级别上进行任何更改。我也无法以新添加的用户身份登录或运行某些操作（请参见下面的测试）。proftpd日志显示了我Unable to open password file /etc/passwd for reading: Permission denied

你的测试

Cannot execute /bin/bash: Permission denied

ls -l

    drwxrwxr-x 23 root root 4096 Aug 15 15:26 /
   drwxr-xr-x  90 root root  4096 Aug 15 16:38 etc
    -rw-rw-r-- 1 root root 1971 Aug 15 16:25 /etc/passwd
    -rw-r----- 1 root shadow 2151 Aug 15 16:25 /etc/shadow
    drwxrwxr-x   2 root root  4096 Aug 15 16:38 bin
    -rwxr-xr-x 1 root root 941252 Sep 25  2014 /bin/bash

剧本

    #!/bin/bash
path="/var/www"
if [ $(id -u) -eq 0 ]; then
       echo "Enter directory name"
       read dirname
       pathdir="$path/$dirname"
       echo $pathdir
           echo "File doesn't exist. Creating now"
               mkdir $pathdir
               mkdir $pathdir/conf
               mkdir $pathdir/docs
               mkdir $pathdir/logs
               mkdir $pathdir/tmp
               mkdir $pathdir/php-fcgi

           echo "Folder structure created"

       read -p "Enter username : " username
       read -s -p "Enter password : " password
       egrep "^$username" /etc/passwd >/dev/null
       if [ $? -eq 0 ]; then
               echo "$username exists!"
               exit 1
       else
               pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
               useradd -d $pathdir -p $pass $username
               [ $? -eq 0 ] && echo "User has been added to system!" || echo "Failed to add a user!"
       fi
adduser www-data $username
chown root:$user $pathdir
chmod 750 $pathdir
chown $username:$username $pathdir/*
chmod 750 $pathdir/*
confdir=$pathdir/conf
chmod 550 $confdir
cp ./php.ini $confdir
sed -i -e 's#;open_basedir =#open_basedir = '$pathdir'/docs/:'$pathdir'/tmp/#g' $confdir/php.ini
sed -i -e 's#;upload_tmp_dir =#upload_tmp_dir = '$pathdir'/tmp/#g' $confdir/php.ini
sed -i -e 's#;session.save_path =#session.save_path = '$pathdir'/tmp/#g' $confdir/php.ini
chown $username:$username $confdir/php.ini
chmod 440 $confdir/php.ini
generate php-fcgi-starter
cat > $pathdir/php-fcgi/php-fcgi-starter << EOF
#!/bin/sh
PHPRC="${confdir}/"
export PHPRC
export TMPDIR=${pathdir}/tmp
exec /usr/bin/php5-cgi
EOF
chmod 750 $pathdir/php-fcgi/php-fcgi-starter
chattr +i -V $pathdir/php-fcgi/php-fcgi-starter
generate apache vhost
echo "Domain:"
read domain
cat > /etc/apache2/sites-available/$domain << EOF
<VirtualHost *:80>
   ServerAdmin [email protected]
   ServerName ${domain}
   ServerAlias www.${domain}
   SuexecUserGroup ${username} ${username}
   AddHandler fcgid-script .php
   DocumentRoot "${pathdir}/docs"
   DirectoryIndex index.htm index.html index.php
<Directory />
   Options FollowSymLinks
   AllowOverride None
</Directory>
<Directory "${pathdir}/docs">
   Options Indexes MultiViews FollowSymLinks +ExecCGI
   FCGIWrapper ${pathdir}/php-fcgi/php-fcgi-starter .php
   Order allow,deny
   allow from all
</Directory>
LogLevel warn
CustomLog ${pathdir}/logs/access.log combined
ServerSignature On
</VirtualHost>
EOF
a2ensite $domain

echo "Ready"

else
        echo "run as root"
        exit 2
fi