Using scp (Secure Copy) to Copy Files from Remote Server

Copy a file from a remote host to a local machine

$ scp username@example.com:/home/kabalweg/my_archive.ta.gz /home/kabalweg/local

Copy a file from a local machine to a remote host

$ scp /home/kabalweg/local/my_archive.tar.gz username@example.com:/home/kabalweg

 

Compress/Uncompress in Linux/Unix

Compress the folder named sites inside the /home/kabalweg directory:

$ tar -zcvf my_archive.tar.gz /home/kabalweg/sites

Uncompress file into the current directory:

$ tar -zxvf my_archive.tar.gz

Where: 

z = compress archive using gzip program

c = create archive 

v = verbose i.e display progress while creating archive
f = archive File name 

x = extract files

Watching Log Files Using tail and less

Watch the error log and filter the output to the screen (using grep).

tail -f /var/log/apache/error.log | grep -v Exception | grep -v 'PHP Notice'

Output the error log to the screen, filter it before doing so (using grep).

less +F /var/log/apache/error.log | grep -v Exception | grep -v 'PHP Notice'

Note:

-v parameter in grep is reverse look up. It mean, all text except 'Exception' and 'PHP Notice'

Forward and Backward Search in less

/ – search for a pattern which will take you to the next occurrence. 

? – search for a pattern which will take you to the previous occurrence. 

n – for next match in backward direction 

N – for previous match in forward direction

Shift F - similar to tail -f

How to Connect to a Server via SSH

ssh -p 800 user@kabalweg.com

where:

kabalweg.com = is the server

user = the user defined in that server

800 = connection port to that server

How to scp (Secure Copy) File from a Server to Local Machine

The console command below will copy the file from the remote server to the desktop using the same filename.

scp root@remote_server:/var/lib/backup/server_backup.gz ~/Desktop

where: 

root = the user to that server

remote_server = host entry in you ~/.ssh/config file