If you want to swap two variables, you would normally require a temporary third variable. But how to swap them without using a third variable? This is quite often a popular interview question for programming jobs.
In the computer networking field, traceroute is a diagnostic tool for displaying the hops and the round-trip time for each hop. Ping, on the other hand, computes round-trip times only from the destination point. But if you are just interested in finding out the number of hops to a destination and not the round-trip times, ping is an alternative utility to traceroute.
Linux uptime command will show how long the system has been running. But if you want to find out the boot time of the system instead, you will have to perform a bit of arithmetic – subtract the output of the uptime command from the current time. Sounds too troublesome? There’s an easier way to do it using the Linux proc filesystem.
Follow the steps below to export your Facebook Friends’ birthdays to Google Calendar in less than 10 minutes!
If you need to run scripts on specific weeks on a UNIX machine, then there is a easy way to determine this.
I use Google Calendar for both personal and business use but it lacks a critical piece of information by default – the week number. Week numbers are important when it comes to project schedules and also to track major milestones. But there is a way to add this missing feature and it’s quite simple actually.
The IMEI (International Mobile Station Equipment Identity) is a 15-digit number to uniquely identify a mobile phone device. IMEISV (IMEI Software Version) is a 16-digit number with the IMEI and an additional software version number.
The tree command has been around in Windows for a very long time to print out the directory structure but this is still not available in most of the Unix variants. Most of the new Linux distributions do seem to have the tree command available.
Tunneling a FTP connection over SSH is not something that is straight forward. To understand the problem better, we need to analyse how FTP works.
After posting the Workaround for Juniper VPN Split Tunneling Restriction article more than 4 years back, I am still getting email requests for help on patching the Juniper Network Connect binary. Therefore I have decided to come up with a table with the offsets to patch for every version that I have come across.
