将变量传递给cat

盐水

我在bash脚本中只有一个变量,${PHP_V}并试图像这样传递nginx配置文件:

cat <<'EOF' > /etc/nginx/sites-available/default
server {
    listen 80 default_server; 
    listen [::]:80 default_server; 

    listen 443 ssl default_server; 
    listen [::]:443 ssl default_server; 

    root /vagrant/webroot; 

    index index.php; 

    server_name _; 

    ssl_certificate /etc/nginx/certs/vagrantbox.crt; 
    ssl_certificate_key /etc/nginx/certs/vagrantbox.key;  

    location / { 
        try_files $uri $uri/ /index.php?$args; 
    } 

    location ~ \.php$ { 
        try_files $uri =404; 
        include fastcgi_params; 
        fastcgi_pass unix:/run/php/php${PHP_V}-fpm.sock; 
        fastcgi_index index.php; 
        fastcgi_intercept_errors on; 
        fastcgi_param SCRIPT_FILENAME 
        $document_root$fastcgi_script_name; 
    }
}
EOF

但没有成功。怎么做?

jesse_b

您需要取消报价EOF

如果对单词的任何部分加引号,则应通过对单词执行引号删除来形成定界符,并且此处文档行不得扩展。否则,定界符应为单词本身。

如果未引用单词的任何部分,则应扩展本文档的所有行,以进行参数扩展,命令替换和算术扩展。

请参阅:2.7.4此处文档


但是请注意,您的here文档中有几件事需要单独进行转义以防止扩展:

cat <<EOF > /etc/nginx/sites-available/default
server {
    listen 80 default_server; 
    listen [::]:80 default_server; 

    listen 443 ssl default_server; 
    listen [::]:443 ssl default_server; 

    root /vagrant/webroot; 

    index index.php; 

    server_name _; 

    ssl_certificate /etc/nginx/certs/vagrantbox.crt; 
    ssl_certificate_key /etc/nginx/certs/vagrantbox.key;  

    location / { 
        try_files \$uri \$uri/ /index.php?\$args; 
    } 

    location ~ \.php\$ { 
        try_files \$uri =404; 
        include fastcgi_params; 
        fastcgi_pass unix:/run/php/php${PHP_V}-fpm.sock; 
        fastcgi_index index.php; 
        fastcgi_intercept_errors on; 
        fastcgi_param SCRIPT_FILENAME 
        \$document_root\$fastcgi_script_name; 
    }
}
EOF

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