Issue When Virtual Machine boots it complains that UUID's are incorrect. From dracut shell run the following: Now mount the primary disk: mount /dev/sda1 /mnt Or depending on what disk drivers you are using: mount /dev/vda1 /mnt Bind the directories which grub needs to detect the other operating systems: mount --bind /dev /mnt/dev && mount […]

If you get the following error when trying to login to an account on a Linux OS the likelihood is that the account has been locked out / expired: To re-enable an expired Unix account that has been locked out due to a timer you can run the following command via root or sudo user: […]

Nightly Database Backups Bitwarden will automatically take nightly backups of the mssql container database. These database backups are kept in the ./bwdata/mssql/backups directory. Nightly database backups are kept in this directory for 30 days. In the event of data loss, you can restore one of these daily backups. I wanted to sync these backups to a remote […]

Locate mssql container: docker ps Login to the container: docker exec -it cc86c04b61bc "bash" Login to MSSQL: /opt/mssql-tools/bin/sqlcmd -S localhost -U SA Show existing databases: 1> SELECT NAME FROM sys.sysdatabases 2> go Select the database: 1> use vault 2> go Changed database context to 'vault'. Show the database tables: 1> SELECT * FROM information_schema.tables; 2> […]

Introduction This is a quick overview of some very basic firewalld related commands that can be run on Linux. With firewalld there is no need to remove iptables as it should be run along side it. All firewalld will do is provide us a much simpler command structure, ultimately anything applied in firewalld gets placed […]

Having dealt with many hacked websites over the years it is common knowledge that hackers love to use base64 encoded files and eval function to take control of websites and exploit them to the best of their ability. Scanning For Base64 If you are dealing with a hacked website you can scan for files containing […]

First change directory to the one containing the files you wish to bulk rename: Example of files inside of a directory: We are looking to remove everything but the unique string and the file extension at the end. For example "125 - Mexico - 39579375938789.jpg" would turn into "39579375938789.jpg". Lets try return a list of […]

RFC4821 proposes a mechanism to detect ICMP black holes and tries to adjust the path MTU in a smart way rather than performing DF set pings etc. On Linux implementation of this mechanism is pretty straightforward and on recent distributions it comes built into the OS by default. Enable TCP MTU Probing First check to […]

We were running a bash script containing a while loop to process a large amount of data. The basics of the script looked like the following: When running the script whenever a line was reached that successfully connected via SSH and the else part of the script was run, e.g: ssh -q -o ConnectTimeout=30 $IP_ADDRESS […]