ubuntu-server

问题 My question is: is there a way to set up a virtual display as default display on a linux server (so that all GUI application launched will be displayed on that display, if no counter indication is made)? I tried using this: xvfb-run java -jar autoclick.jar , which produces the following output : searching graphic devices is Headless:false screen N°1 width:1600 height:900 just 1 robot click: Magic button clicked ! and here's the autoclick code : System.out.println("searching graphic devices");

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Cron job on Ubuntu for php I am running and ubuntu server and wanted to run a php script every day. I have done some research and found that cron is the best way of doing this however, this is where i got stuck, a lot of the information on the internet about cron is very hard to follow and understand. So i wanted to execute a simple php script once a day, the script i made for testing simply just deletes a

问题 I have installed mongo on machine1( Ubuntu 14.04.3 LTS server ) in my local network. I have also opened the port 27017 as mentioned in this guide using following commands: sudo iptables -A INPUT -p tcp --destination-port 27017 -m state --state NEW,ESTABLISHED -j ACCEPT sudo iptables -A OUTPUT -p tcp --source-port 27017 -m state --state ESTABLISHED -j ACCEPT Current rules are ( iptables -L ): Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT tcp -- anywhere anywhere tcp dpt

问题 UPDATE: Just occurred to me: Is it possible that pgAdmin counts not the actual time of the query, but the time required to draw the results in the grid? I just executed the query using the command line (psql) and output the results in a txt file and it was very swift (1-2 seconds tops). In that case, the issue is not a postgresql / ubuntu server configuration; it is rather a display adapter's problem. Am I right or searching in the wrong direction? On my "old" PC (Core 2 Duo, 4GB RAM, 250GB

问题 I have gone through the whole process of downloading Oracle instant client, SDK, etc. in a Ubuntu Server 17.04. Then converted rpm packages to deb with alien, installed, set the paths, downloaded pecl oci8, compiled and installed (w/o errors), etc. and then added the line: extension=/usr/lib/php/20151012/oci8.so And restarted. When I check the /var/log/apache2/error.log I see: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/20151012/oci8.so' - libmql1.so: cannot open

问题 I’m trying to run the code below to create a virtual Python environment from a YAML file. I’m running the code in the command line on Ubuntu server. The virtual environment is named py36. When I run the code below, I get the message below. The environment also doesn’t get created. Is this problem caused because I have several packages that I had to install using pip instead of Anaconda? Does anyone know how to solve this issue? I created the YAML file following the example from: https:/

问题 I want to setup Apache and Glassfish on Ubuntu 16.04 server. I have installed apache2 libapache2-mod-jk glassfish The following are the steps I have followed Configuring the MPM module Set MaxRequestWorkers to 400 in /etc/apache2/mods-available/mpm_event.conf Configuring the JK Module <IfModule mod_jk.c> JkWorkersFile /usr/share/glassfish4/glassfish/domains/<domain-doamin1>/config/workers.properties JkLogFile /var/log/apache2/mod_jk.log JkLogLevel error JkLogStampFormat "[%a %b %d %H:%M:%S %Y

问题 I've a VM Ubuntu15.04 server and I've configured nginx to listen requests on port 80 and forward them to respective applications on different ports. I have a simple node.js service running over port 3000 which has one GET and POST service. I have started it by using PM2 and added a proxy_pass to localhost:3000/ in my nginx default conf. The problem is when i try to use a GET request it is working fine but in case of POST it is showing 404 error. I've tried to use the POST service through

问题 I have this code in file called index.html in directory /var/www/html/index.html . <html> <body> <?php echo phpinfo(); ?> </html> </body> But when I try to see what it prints on the browser it doesn't show anything at all, or sometimes it downloads a file. This is what browser prints (Nothing). If I try to look the source code and it seems like this. I'm not sure what I'm doing wrong. I searched a lot and tried a few things, but nothing really seemed to work. I'd really appreciate if someone

问题 I have a .jar which I can run perfectly via the command line. I need this to be running continuosly every 5 mins, so i did crontab -e where I added this line */5 * * * * java -jar /var/www/java/executable.jar if I go grep CRON /var/log/syslog I do see where the job was executed, but it never was since I have a logger inside the java file and the first thing it does is append to the logger the time, which is not doing so. What can be the possible error? 回答1: The most common error is that the