02-22-2012
Well, gnu parallel can do it in parallel, but generally, unless you make all home dirs a mount of some common dir, you do N copies. It should be a one time deal, usually, but it can be scripted in case you want to move it.
The ssh command scp is nice for this. If you set up one ~/.ssh/* so 'ssh localhost pwd' works password free, and then scp -rp ~/.ssh that to all the other hosts, then you can scp password free, great for scripts. (Ironically, the lines added for localhost in known_hosts will fail elsewhere, but just remove them and it will make new ones.) Everywhere you copy your ~/.ssh, you will extend password-free ssh and scp (and even sftp if you must) access to all other such hosts. It generally needs to be copied even less often than the .profile file.
10 More Discussions You Might Find Interesting
1. IP Networking
hello i have a ubuntu ssh server that i can acess from any of my comnputers but only if they are on the same wireless network as the server. i tested trhis my tehtehring my samsung blackjack to my windows partition and installing openssh to windows it works when windows is on the wireless but no... (1 Reply)
Discussion started by: old noob
1 Replies
2. IP Networking
Hi,
how can i sftp or scp between 2 servers, when only i am able to ping to them.
they are on different network
10.130.170.31 -- server 1
10.130.230.141 -- server 2
i need to transfer data files from 1 to 2.
need your suggestions or help on these.
Regards
saha (4 Replies)
Discussion started by: saha
4 Replies
3. UNIX for Dummies Questions & Answers
Hello,
is there any tool where I can scan my netwrk and get all types of Unix servers? (2 Replies)
Discussion started by: fsmadi
2 Replies
4. Shell Programming and Scripting
Hi Experts,
I am new to scripting. We have around 400 Linux servers in our environment. I want to add a new user to a perticular group on all the servers using SSH.
Requirements:
1) Need to take the server names from a text file.
2) Login into each server and check whether perticular... (1 Reply)
Discussion started by: Satya1983
1 Replies
5. UNIX for Dummies Questions & Answers
Hi,
Need to Collect IP Details in the following format
ServerName ; IPADDR1 ; NETMASK1 ; IPADDR2 ; NETMASK2 ; IPADDR3 ; NETMASK3 ;
Could you please give me the suggesstions.
Thanks (1 Reply)
Discussion started by: rajasekg
1 Replies
6. Red Hat
I have a tar file uploaded in a FTP server and it needs to be deployed in some 300 linux machines in a path like /opt/oracle/scripts and untar the file. it needs to be executed with one shell script by executing on all the the servers. this tar needs to deployed by doing pbrun su - user.... (4 Replies)
Discussion started by: appoo4
4 Replies
7. Shell Programming and Scripting
Hello,
I have a requirement to check the tcp network connectivity between server it's running on and the list of host's and ports combination.
i have written the below code but it doesn't work, but when i execute the nc command outside the script it works fine.
please help me where i am... (8 Replies)
Discussion started by: sknovice
8 Replies
8. IP Networking
ello,
i am new to the networking side.
I have a requirement to check the tcp network connectivity between server it's running on and the list of host's and ports combination.
please help me where i am going wrong.
my code:
#!/bin/bash
#read the file line by line
cd "$1"
cat... (17 Replies)
Discussion started by: sknovice
17 Replies
9. Shell Programming and Scripting
Hello All,
I need help writing a bash script that will run on 500 LINUX servers and do the following:
1. Capture the ipa_server name from /etc/sssd/sssd.conf on a list of 500 servers in the ipahosts file.
2. Write to a file outputing only server name and IPA server name.
Root ssh keys... (3 Replies)
Discussion started by: vtowntechy
3 Replies
10. Ubuntu
Since a few weeks i use Ubuntu 16 on my laptop:
# uname -a
Linux xxxx 4.8.0-52-generic #55~16.04.1-Ubuntu SMP Fri Apr 28 14:36:29 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Because i want to use a custom name server i set the properties in the "Edit Connections" dialogue to the following:
... (2 Replies)
Discussion started by: bakunin
2 Replies
SCP(1) BSD General Commands Manual SCP(1)
NAME
scp -- secure copy (remote file copy program)
SYNOPSIS
scp [-346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file] [-l limit] [-o ssh_option] [-P port] [-S program] [[user@]host1:]file1 ...
[[user@]host2:]file2
DESCRIPTION
scp copies files between hosts on a network. It uses ssh(1) for data transfer, and uses the same authentication and provides the same secu-
rity as ssh(1). scp will ask for passwords or passphrases if they are needed for authentication.
File names may contain a user and host specification to indicate that the file is to be copied to/from that host. Local file names can be
made explicit using absolute or relative pathnames to avoid scp treating file names containing ':' as host specifiers. Copies between two
remote hosts are also permitted.
The options are as follows:
-3 Copies between two remote hosts are transferred through the local host. Without this option the data is copied directly between the
two remote hosts. Note that this option disables the progress meter.
-4 Forces scp to use IPv4 addresses only.
-6 Forces scp to use IPv6 addresses only.
-B Selects batch mode (prevents asking for passwords or passphrases).
-C Compression enable. Passes the -C flag to ssh(1) to enable compression.
-c cipher
Selects the cipher to use for encrypting the data transfer. This option is directly passed to ssh(1).
-F ssh_config
Specifies an alternative per-user configuration file for ssh. This option is directly passed to ssh(1).
-i identity_file
Selects the file from which the identity (private key) for public key authentication is read. This option is directly passed to
ssh(1).
-l limit
Limits the used bandwidth, specified in Kbit/s.
-o ssh_option
Can be used to pass options to ssh in the format used in ssh_config(5). This is useful for specifying options for which there is no
separate scp command-line flag. For full details of the options listed below, and their possible values, see ssh_config(5).
AddressFamily
BatchMode
BindAddress
CanonicalDomains
CanonicalizeFallbackLocal
CanonicalizeHostname
CanonicalizeMaxDots
CanonicalizePermittedCNAMEs
CertificateFile
ChallengeResponseAuthentication
CheckHostIP
Ciphers
Compression
ConnectionAttempts
ConnectTimeout
ControlMaster
ControlPath
ControlPersist
GlobalKnownHostsFile
GSSAPIAuthentication
GSSAPIDelegateCredentials
HashKnownHosts
Host
HostbasedAuthentication
HostbasedKeyTypes
HostKeyAlgorithms
HostKeyAlias
HostName
IdentitiesOnly
IdentityAgent
IdentityFile
IPQoS
KbdInteractiveAuthentication
KbdInteractiveDevices
KexAlgorithms
LogLevel
MACs
NoHostAuthenticationForLocalhost
NumberOfPasswordPrompts
PasswordAuthentication
PKCS11Provider
Port
PreferredAuthentications
ProxyCommand
ProxyJump
PubkeyAcceptedKeyTypes
PubkeyAuthentication
RekeyLimit
SendEnv
ServerAliveInterval
ServerAliveCountMax
StrictHostKeyChecking
TCPKeepAlive
UpdateHostKeys
UsePrivilegedPort
User
UserKnownHostsFile
VerifyHostKeyDNS
-P port
Specifies the port to connect to on the remote host. Note that this option is written with a capital 'P', because -p is already
reserved for preserving the times and modes of the file.
-p Preserves modification times, access times, and modes from the original file.
-q Quiet mode: disables the progress meter as well as warning and diagnostic messages from ssh(1).
-r Recursively copy entire directories. Note that scp follows symbolic links encountered in the tree traversal.
-S program
Name of program to use for the encrypted connection. The program must understand ssh(1) options.
-v Verbose mode. Causes scp and ssh(1) to print debugging messages about their progress. This is helpful in debugging connection,
authentication, and configuration problems.
EXIT STATUS
The scp utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
sftp(1), ssh(1), ssh-add(1), ssh-agent(1), ssh-keygen(1), ssh_config(5), sshd(8)
HISTORY
scp is based on the rcp program in BSD source code from the Regents of the University of California.
AUTHORS
Timo Rinne <tri@iki.fi>
Tatu Ylonen <ylo@cs.hut.fi>
BSD May 3, 2017 BSD