BashConfig

Content

Project description
SSH
Tips

Project description

Bash config files

SSH

Create ssh key on local device

ssh-keygen
Save to ~/.ssh
Enter passphrase
Copy content of ~/.ssh/id_rsa.pub key to remote ~/.ssh/authorized_keys

Add aliases for ssh to ~/.ssh/config:

Host host_name
   HostName ip
   Port 22
   User root
   IdentityFile ~/.ssh/id_rsa

Using aliases:

ssh host_name
sftp host_name

White and black lists

add white list to /etc/hosts.allow:

sshd: 10.83.33.77/32, 10.63.152.9/32, 10.12.100.11/28, 10.82.192.0/28

add black list to /etc/hosts.deny:

sshd: ALL

Tips

Bash

Command	Description
`Alt + .` `Esc + .`	Last object
`Ctrl + r`	Search by bash_history
`Ctrl + l`	Clear, like command clear

rm -rf BashConfig
git clone https://github.com/thek4n/BashConfig
BashConfig/setup.sh
rm -rf BashConfig

$RANDOM - Return random 0-32767
/command - Without using alias
df -h / - Size

Vim

Command	Description
`Ctrl + [`	Analog Esc
`d -> Ctrl + End`	Delete from cursor to end of file
`u`	Undo
`Ctrl + r`	Redo
`22G`	Go to line 22

Autostart

create /etc/systemd/system/<service>.service

sudo vim /etc/systemd/system/<service>.service
sudo systemctl daemon-reload
sudo systemctl start <service>.service
sudo systemctl status <service>.service
sudo systemctl enable <service>.service

Cron

crontab -e

0 0 1 1 * command.sh - Every year in 1 January 00:00:00
*/1 * * * * command.sh - Every minute
0 */3 * * 2,5 command.sh - One time per 3 hours in Tue and Fri
0 0,12 1 */2 * command.sh - At minute 0 past hour 0 and 12 on day-of-month 1 in every 2nd month

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