SCP (Secured Copy)
scp relies on ssh to operate. scp is used to securely copy files/directories from/to remote location. The syntax of scp is identical to cp.
Syntax: scp -arg source destination
# scp 192.168.10.1:/root/f1 /home/sarmed | Copies the file ‘f1’ from remote host 192.168.10.1 to local directory /home/sarmed |
# scp f2 192.168.10.2:/home/sarmed | Copies the local file ‘f2’ to remote host 192.168.10.2 in the location /home/sarmed |
# scp –r localdir 192.168.10.2:/home/sarmed | Copies local ‘localdir’ to remote host 192.168.10.2 in the location /home/sarmed |
# scp -P 87 192.168.10.1:/root/f3 /home/sarmed | Same as the first example. However, this time scp connects to port 87 instead of default ssh port 22. |
# scp –P 87 sarmed@192.168.10.1:/home/sarmed/f4 /root | Same as the 4th example. Communicates with the remote host 192.168.10.1 at port 87 and as user sarmed. Copies the file f4 from the remote machine to /root in local host. |
Mount
To access any physical device, it must be mounted to some logical location. By accessing the logical location, we actually access the physical device.
Syntax: command -arg source destination
# mount /dev/sdb1 /mnt | Mounts the physical partition /dev/sdb1 to logical location /mnt |
# mount /dev/sdc2 /media | Mounts the physical partition /dev/sdc2 to logical location /media |
# mount -t nfs 192.168.10.1:/share /newshare | Mounts the directory /share located in remote host 192.168.10.1 using NFS (network file system) to local /newshare. (NFS must be preconfigured in 192.168.10.1 for this command to work) |
# mount –o remount rw / | Often used in recovery mode. –o = option. This command remounts / directory in rw mode |
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