Find top/largest files and directories on a Linux server 3

Find top/largest files and directories on a Linux server

To find the largest files and directories on a linux server, type the command bellow… and grab a cup of coffee afterwards. Change head -n $top_num to your liking to get the top x files and/or directories.

 

Ubuntu 18.04 disable predictable network names 4

Ubuntu 18.04 disable predictable network names

Cloud-init doesn’t work with predictable network names … So In favor of cloud-init automated network set up disable them. In: /etc/default/grub Change to: GRUB_CMDLINE_LINUX=”net.ifnames=0 biosdevname=0″ source

Find files or directories owned by user/group and permission bits 5

Find files or directories owned by user/group and permission bits

Find files or directories owned by user/group and permission bits   Find all files not owned by user

  Find all files not owned by group

Find all files that don’t have specific permissions

  Examples: Find all files that don’t have 755 permissions

Combine all parameters: Find all python files […]

Find and Delete log files on a linux system 6

Find and Delete log files on a linux system

Find and Delete log files on a linux system. Think before you act.

 

Mount disk and install grub boot loader 7

Mount disk and install grub boot loader

Mount disk and install grub boot loader

 

Delete all lines of a file containing a regex pattern using sed 8

Delete all lines of a file containing a regex pattern using sed

Delete all lines of a file containing a regex pattern using sed. For example you can delete all commented lines of a default configuration file. Take a look on my basic regex cheat sheet  

 

Replace a string with a new one in all files using sed and xargs 9

Replace a string with a new one in all files using sed and xargs

Replace a string with a new one in all files using sed and xargs

     

comment specific line using sed command 10

comment specific line using sed command

Comment specific line using sed command can be used to configuration files …

 

Import large .sql file into MySQL database 11

Import large .sql file into MySQL database

Should be used for really huge database imports like tens of GB … Note: remember to navigate to the directory where your .sql file lives so you can use source on it later …

Note: if you’re not sure what these options do, please, do some research  first.