por Miguel | Ago 28, 2018 | linux
The Epson TM-U220B (model M188B) is a receipt printer with a DB25-DB9 cable. It will be connected to the host via Serial port and recognized in Linux as /dev/ttyS[X] In this post is explained how to find out which device was detected by the operative system. In my...
por Miguel | Ago 24, 2018 | linux
My system has been freezing from time to time, today it became totally unresponsive even after a restart. I saw many services failing in the boot loading process. After checking the disk I found that /var was at 100%, checking the logs we must thank Chrome for such...
por Miguel | Ago 13, 2018 | linux
Scenario of this document: At corporate level our users have laptops, depending on where they are Firefox should detect the proxy settings if: The user is using the laptop with an Ethernet cable (at the office) The user is using the laptop via Wi-Fi (at the office)...
por Miguel | Jul 5, 2018 | linux
When working with a Linux system being loaded through PXE / tftpboot / NFS in a device without hard disk it could happen that we need to understand or fix problems at boot time process, part of it is initramfs. The procedure to unpack an initrd.img is simple: # create...
por Miguel | Jun 22, 2018 | bash, linux
Today I’ve found a nice problem to solve in stack overflow. There was this guy claiming why unix utility grep didn’t parse this file in his Linux. Long story short the file was being somehow «recognized» as binary for grep, because it had four NUL values....
por Miguel | Jun 6, 2018 | linux
I’ve been working with terminator for years and one of the best things you can do is personalize your own layout with custom commands in each window. Be careful, terminator version 1.90 won’t render layouts properly. I’m using terminator 1.91 In my...
