usage of scp

[etaf]

usage of scp

scp is a tool like cp in linux.The different is,scp copy file between PCs.

copy a file1 from A to B:

A~:  scp -p file1 username@B's IP : ~/file1
eg:
scp -p test.txt [email protected]:~/tset.txt

here -p measn to preserve the modify time ,access time,mode from original file.

copy a directory from A to B

A~:  scp -pr dir1 username@B's IP : ~/dir1
eg:
scp -p test_dir [email protected]:~/tset_dir

here -r means copy a directory

other option see :

man scp

scp without password

on the above step,each scp need you offer the password of the target PC.
Now there is a way to avoid the password step: by ssh certification.

A -> B whithou password

in PC A:
ssh-keygen -t rsa
scp ~/.ssh/id_rsa.pub [email protected]:~/.ssh/authorized_keys

the same for B->A