A forum that I am an adminstrator for has been clamoring for an iPhone theme (style) for a long time now. In the past, I hadn’t seen any usable iPhone template for phpBB3, until now.
View this entire post to view my modifications to a theme switcher for mobile devices, so that the end user can disable a mobile theme for their login if they should choose to do so.
Categories: Code Samples,PHP,Software
We received a tip from blog readers Christian and Michael for alternatives to the command to delete all directories older than a certain period of time. These both work in bash and can be used in scripts to clean up old backup directories or any situation where you need to delete old directories from the command line. From Christian: find /home/backup/ -maxdepth 1 -type d -mtime +7 -exec rm -r {} \; From Michael: find /home/backup/ -maxdepth 1 -type d -mtime +7 -exec echo “Removing Directory => {}” \; -exec rm -rf “{}” \; The first one works quietly, while the second one will display what is being deleted. These are probably faster than putting it into a for loop, so feel free to use whatever works best in your particular situation!
Categories: Linux,Shell,System Administration
My professor sent us this little one liner (ok, I had to format it to 2 lines to fit in this blog. You know what I mean) which prints out the current directory tree: ls -R | grep “:$” | sed -e ‘s/:$//’ -e ‘s/[^-][^\/]*\//–/g’ \ -e ‘s/^/ /’ -e ‘s/-/|/’ What’s going on here?
Categories: Code Samples,Shell
The Bash command environment, which is the namesake of this blog, is very flexible in that it allows you to manipulate the filesystem in many ways. Awk and sed are very powerful tools that allow you to do this rename with a simple one line command. This post will walk you through doing this with a Comma Separated Value (CSV) file and also using a simple regular expression to rename many files.
Categories: Code Samples,Linux,Shell,System Administration
It is very easy to create a random file using the linux command line. Much like the command to fill a file with all zeros, for example a 1 Meg file: dd if=/dev/zero of=zero.filename bs=1024 count=1000 You do the same using /dev/urandom: dd if=/dev/urandom of=random.filename bs=1024 count=1000 Resulting in a 1MB file: 1000+0 records in 1000+0 records out 1024000 bytes (1.0 MB) copied, 0.0294247 s, 34.8 MB/s This is transferring random data from the virtual device urandom to the output file. We use /dev/urandom instead of /dev/random because the /dev/random source generates random data very slowly. urandom is much faster at this but remains very random, if not quite a random as /dev/random. This should work with any system with dd and /dev/urandom.
Categories: Code Samples,Linux,Security,Shell
Tagged: command line, Linux, tips
I was recently tasked with copying speaker’s presentations, files and handouts onto 100s of USB Drives (key drives) for a conference that work is hosting down in Washington, D.C. My first thought was that it was going to be a pain to have to copy/paste the files to each drive. I thought about creating a batch script to copy the files with a double click. But really, who wants to be doing all of that clicking and/or typing? Work smarter, not harder. Then I remembered a neat feature that SyncBackSE, a program I use at home for backups, has available. The backup program – which is basically a file copy process – can be triggered based on the insert of a drive, whether that be a USB Key Drive or an External Hard Drive. Using the program, the only action you need to do to trigger the copy process is….
Categories: Hardware,Other Code,Programs
Tagged: conference, key drive, tips, tricks, usb drive, usb key drive
You’ve flashed your old WRT54G or other vanilla router with the Tomato firmware. This itself turns your router into a lean, mean routing machine with QOS, SSH and more, but let’s say we want to take it a bit further. What it we want to get some more stats out of it? In order to do this, we first need to set up a way to pull this information from the router. The best way to do this is to install an SNMP (Simple Network Management Protocol) daemon on the system. The main roadblock we face here is that the system mainly runs in volatile system memory, meaning that every time the system is rebooted the filesystem is reset. Fortunately Tomato provides a way to get around this using CIFS shares. Follow the steps below (as modified from here) to install an SNMP server on a Tomato router. Create a….
Categories: Code Samples,Configurations,Hardware,Linux,Other Code,Other Technology,Programs,Shell,Software,System Administration
