Most Linux distributions do not enable TRIM by default for a variety of reasons. To get the best long-term performance from your SSDs you’ll want to enable it manually. The best way to do this is to occassionally run the
fstrim command on your SSD mount points.
Create a cron script that will run once a day:
sudo touch /etc/cron.daily/fstrim
Add the following to
/etc/cron.daily/fstrim. In this example I have two mount points that I want to TRIM on my SSD, / and /home:
#!/bin/sh LOG=/var/log/fstrim.log echo [ $(date) ] $(fstrim -v / 2>&1) >> $LOG echo [ $(date) ] $(fstrim -v /home 2>&1) >> $LOG
Save the file and then make it executable:
sudo chmod +x /etc/cron.daily/fstrim
It will run once a day and log to /var/log/fstrim.log:
[ Sat Oct 18 08:42:50 MDT 2014 ] /: 42.7 GiB (45856079872 bytes) trimmed [ Sat Oct 18 08:42:51 MDT 2014 ] /home: 101.5 GiB (108950966272 bytes) trimmed
If you’re using LVM or disk encryption the instructions will be different. In that case I recommend you read through the relevant sections in the Arch wiki page for solid state drives:
If your computer is booting with a UEFI BIOS you may notice that changes you make to
/etc/default/grub are not taking effect. This may be because you are generating
grub.cfg in the wrong location.
Make your changes to
/etc/default/grub (kernel options are set on the
GRUB_CMDLINE_LINUX= line). Now regenerate your grub.cfg, both in the standard location:
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
And in the location that your UEFI BIOS will actually use:
sudo grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
I’m running Firefox 32.0.2 on Fedora 21 and I noticed that sites that use Helvetica look very poorly. Here’s a side-by-side comparison of Firefox and Chrome showing the problem:
I found a lot of complaints online regarding this issue, dating back several years, so I doubt this is a recent bug that will be fixed anytime soon. Luckily there’s a simple fix via Firefox’s userContent.css file.
BitTorrent Sync is a powerful cross-platform file sharing application. Think of it as a decentralized version of Dropbox with no charges (it’s free), no limits, and no middle-man.
btsyncctl is a simple bash script I wrote to automate the process of starting, stopping, and checking the status of the BitTorrent Sync application (
btsync) running on a Linux desktop or server.
btsync runs as a non-privileged user and any user with adequate sudo privileges can use
btsyncctl to pass it basic controls like