Your DD-WRT enabled router can be configured to block ads as described in the Ad Blocking article. For non-Micro DD-WRT versions the ad blocking hosts file on the router can be updated automatically by a custom shell script that you then execute as a cron job, all on the router itself. However, the Micro...
Read more →If you need to automatically start/stop Tomcat each time you start/stop/reboot your Linux server, you can do so by creating a start/stop script under the /etc/init.d directory. The sample script below is called /etc/init.d/tomcat and runs Tomcat as a user called “tomcat” – because most likely you do not want Tomcat to run as...
Read more →By default, Ubuntu uses DHCP in order to get an IP address. If you need a static IP instead, you need to update your interface configuration. This is done in file /etc/network/interfaces By default, the contents of this file will probably look similar to this: Most likely, your main interface will be eth0 (or...
Read more →If you need to recover files and/or partitions on Linux, TestDisk and PhotoRec may be useful. Both are very powerful and free tools that run on Linux and may also work if you need to recover data from USB Hard Drives, USB Memory Drives, Memory Cards, CD-ROMS, iPod, etc. Despite its name “PhotoRec”, this...
Read more →Unlike on the Ubuntu Desktop edition, USB devices are not automatically mounted on Ubuntu Server. You will have to do it manually. Luckily it’s quite simple. First, you need to find out which device needs to be mounted: sudo fdisk -l Most likely, your USB Hard Drive will be /dev/sdb1. Now we create a...
Read more →You just installed DB2 as non-root user on Linux and when you attempt to start your instance with the db2start command, you get the following message: "SQL1220N The database manager shared memory set cannot be allocated." Depending on which version of DB2 you’re using, and who knows what else, you could try one or...
Read more →To search and replace a string globally in the vi editor, use the following syntax: :%s/search_string/replacement_string/g
Read more →If you need to convert a DOS text file to a UNIX text file, and the dos2unix command is not available on your platform, you can achieve the same result by using the tr command to remove the carriage return (CR) byte from each line: cat mydosfile.txt | tr -d '\015' > myunixfile.txt On...
Read more →The example below shows how you can exclude file “somefile.txt” and directory “subfolder6″ from the tar command:
Read more →Although there are several ways to achieve this, the way I most often tar and gzip files using a single command line is as follows: tar cvf - myfile | gzip -9 > myfile.tar.Z
Read more →