Rename multiple files
for filename in *.jpg; do newname=<code>echo $filename | sed 's/xxx/yyy/g'</code>; mv $filename $newname; done
#Linux
How to disable password authentication for SSH
In file /etc/ssh/sshd_config Uncomment the second line, and, if needed, change yes to no. Then run
Mount encrypted volumes from command line with Luks
Your volume is probably encrypted with LUKS, here’s how to mount it: You need: sudo apt-get install cryptsetup To decrypt the volume: sudo cryptsetup luksOpen /dev/sda1 my_encrypted_volume Now…
How to mount a HFS partition in Ubuntu as Read/Write?
First, make sure that you have hfsprogs installed. Example installation command: Next, mount or remount the HFS+ drive; commands need to be as follows: Finally, if the drive was improperly…
Change extension to multiple files
for i in *.pdf; do mv $i ${i/pdf/jpg}; done
How to take MySql dump (backups)
mysqldump –add-drop-table -a -u username -p database | gzip > prod-db-dump.sql.gz Note: The password is not passed to the command line, but it will asked at the prompt
Preserve bash history in multiple terminals
dd the following to ~/.bashrc # Avoid duplicates export HISTCONTROL=ignoredups:erasedups # When the shell exits, append to the history file instead of overwriting it shopt -s histappend #…
How to take mysql dump
mysqldump –add-drop-table -a -u <user> -p <dbname> | gzip > db-dump.sql.gz
Run one process (or more) into tmux
Let’s say you need to run a process like a lightweight private npm proxy registry such as Verdaccio and you do not want to use a Docker container.…
Check DNS nameservers information about host addresses
You might want to find information about a particular domain and check where it is hosted. i.e.: You could have a domain hosted by Godaddy and have your…