Commands using ssh sorted by votes

Commands using ssh (347)

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Easy Persistent SSH Connections Using Screen

Use as: $ s host1 Will ssh to remote host upon first invocation. Then use C-a d to detatch. Running "s host1" again will resume the shell session on the remote host. Only useful in LAN environment. You'd want to start the screen on the remote host over a WAN. Adapted from Hack 34 in Linux Server Hacks 2nd Addition.
This is sample output - yours may be different.
5

s() { screen -d -RR -m -S "$1" -t "$USER"@"$1" ssh "$1"; }

salamando · 2012-09-07 23:02:52 5
Reverse SSHfs mount,

While `sshfs $REMOTE_HOST:$REMOTE_PATH $LOCAL_PATH` "pulls" a directory from the remote server to the local host, the above command does the reverse and "pushes" a directory from the local host to the remote server. This makes use of the "slave" option of sshfs which instructs it to communicate over plain stdin/stdout and the `dpipe` tool from vde2 to connect the sftp-server stdout to the sshfs stdin and vice-versa.
This is sample output - yours may be different.
5

dpipe /usr/lib/openssh/sftp-server = ssh $REMOTE_HOST sshfs whatever:$LOCAL_PATH $REMOTE_PATH -o slave

em · 2014-03-25 17:40:34 7
Synchronize date and time with a server over ssh

Set Remote Server Date using Local Server Time (push) Show Sample Output
This is sample output - yours may be different.
```
Thu Mar 26 20:24:35 UTC 2015
```
5

ssh user@server sudo date -s @`( date -u +"%s" )`

daryltucker · 2015-03-26 20:25:23 11
vimdiff to remotehost

vimdiff to remotehost Show Sample Output
This is sample output - yours may be different.
```
vimdiff to remotehost
```
4

vimdiff tera.py <(ssh -A testserver "cat tera.py")

te · 2009-02-05 15:54:33 112
setup a tunnel from destination machine port 80 to localhost 2001, via a second (hub) machine.

this is handy when the hubmachine is the only machine that can connect to the destination machine (allowed on ip by firewall) and you want to access it from your laptop.
This is sample output - yours may be different.
4

ssh -N -L2001:localhost:80 -o "ProxyCommand ssh someuser@hubmachine nc -w 5 %h %p" someuser@destinationmachine

mischamolhoek · 2009-02-06 09:58:08 14
open a seperate konsole tab and ssh to each of N servers (konsole 4.2+)

creates a new tab for each of N servers in listofservers.txt and ssh's to said servers then, try the "send to all sessions" feature of konsole to do the same work on all servers at the same time. BIG time saver, but be careful!
This is sample output - yours may be different.
4

for i in $(cat listofservers.txt); do konsole --new-tab -e ssh $i; done

nottings · 2009-02-19 16:32:36 5
Execute a sudo command remotely, without displaying the password

The ssh command alone will execute the sudo command remotely, but the password will be visible in the terminal as you type it. The two stty commands disable the terminal from echoing the password back to you, which makes the remote sudo act as it does locally.
This is sample output - yours may be different.
4

stty -echo; ssh -t HOSTNAME "sudo some_command"; stty echo

jmcantrell · 2009-03-04 19:44:36 12
ensure your ssh tunnel will always be up (add in crontab)

I find it ugly & sexy at the same time isn't it ?
This is sample output - yours may be different.
4

[[ $(COLUMNS=200 ps faux | awk '/grep/ {next} /ssh -N -R 4444/ {i++} END {print i}') ]] || nohup ssh -N -R 4444:localhost:22 user@relay &

j0rn · 2009-03-31 09:39:59 10
remote diff with side-by-side ordering.

more information: man sdiff
This is sample output - yours may be different.
4

ssh $HOST -l$USER cat /REMOTE/FILE | sdiff /LOCAL/FILE -

ncaio · 2009-06-05 18:44:00 8
scp a good script from host A which has no public access to host C, but with a hop by host B

middlehost allows ssh access from where you are but not securehost. Use nice ssh piping to simulate scp through A => B => C setting up the shell function if left as an exercise for the reader. ;-) Agent forwarding should avoid password typing.
This is sample output - yours may be different.
4

cat nicescript |ssh middlehost "cat | ssh -a root@securehost 'cat > nicescript'"

syladmin · 2009-08-25 08:11:12 7
Get ssh server fingerprints

Get your server's fingerprints to give to users to verify when they ssh in. Publickey locations may vary by distro. Fingerprints should be provided out-of-band. Show Sample Output
This is sample output - yours may be different.
```
2048 b6:de:15:9b:00:c1:f5:f8:68:g9:43:9b:94:81:c5:c9 /etc/ssh/ssh_host_rsa_key.pub (RSA)
1024 e5:60:ff:6a:1f:0f:01:d0:14:6b:89:fa:64:f3:ae:2a /etc/ssh/ssh_host_dsa_key.pub (DSA)
```
4

ssh-keygen -l -f /etc/ssh/ssh_host_rsa_key.pub && ssh-keygen -l -f /etc/ssh/ssh_host_dsa_key.pub

Mikelifeguard · 2009-10-26 17:52:41 4
ssh: change directory while connecting

Useful to create an alias that sends you right in the directory you want : alias server-etc="ssh -t server 'cd /etc && $SHELL'"
This is sample output - yours may be different.
4

ssh -t server 'cd /etc && $SHELL'

dooblem · 2010-04-02 19:34:09 6
Install your ssh key file on a remote system
This is sample output - yours may be different.
4

ssh user@remote 'cat >> ~/.ssh/authorized_keys2' < ~/.ssh/id_rsa.pub

yababay · 2010-08-27 07:47:05 5
Create a persistent remote Proxy server through an SSH channel

Create a persistent remote Proxy server through an SSH channel. Show Sample Output
This is sample output - yours may be different.
```
No output
```
4

ssh -fND localhost:PORT USER@SSH_ENABLED_SERVER

2dvisio · 2010-12-01 14:42:13 5
eavesdrop

Record off the microphone on a remote computer and listen to it live through your speakers locally. Show Sample Output
This is sample output - yours may be different.
```
Recording WAVE '-' : Unsigned 8 bit, Rate 8000 Hz, Mono
Playing WAVE 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Mono
```
4

ssh USER@REMOTESYSTEM arecord - | aplay -

mu_mind · 2011-01-31 16:49:45 100
Screenshot pipe to remote host, adding URL to clipboard, notifying when done. (without saving locally)

Requires you to have password free login to remote host ;) Requires xclip and notify-send (If you want to put into clipboard and be notified when action is completed). DATE=$(date +%Y-%m-%d_%H-%M-%S)-$(($(date +%N)/10000000)); HOST="ssh host of your choice"; DEST="destination folder without trailing slash"; URL="URL for file if uploaded to web enabled dir ie. import -window root png:- | ssh $HOST "cat > $DEST/screenshot_$DATE.png"; echo $URL | xclip; notify-send -u low "Screenshot Taken" "Entire screen.\nCopied to clipboard" Show Sample Output
This is sample output - yours may be different.
```
DATE=$(date +%Y-%m-%d_%H-%M-%S)-$(($(date +%N)/10000000)); HOST=swordfischer.com; DEST=/home/swordfischer/public_html; URL=https://swordfischer.com/upload/screenshot_$DATE.png; import -window root png:- | ssh $HOST "cat > $DEST/screenshot_$DATE.png"; echo $URL | xclip; notify-send -u low "Screenshot Taken" "Entire screen.\nCopied to clipboard"

https://swordfischer.com/upload/screenshot_2011-08-13_02-32-55-74.png
```
4

DATE=$(date +%Y-%m-%d_%H-%M-%S)-$(($(date +%N)/10000000)); HOST=ssh_host; DEST=file_dest; URL=url/screenshot_$DATE.png; import -window root png:- | ssh $HOST "cat > $DEST/screenshot_$DATE.png"; echo $URL | xclip; notify-send -u low "Title" "Message"

DELETETHISACCOUN · 2011-08-13 00:40:36 5
Copy your ssh public key to a server from a machine that doesn't have ssh-copy-id

This one is a bit more robust -- the remote machine may not have an .ssh directory, and it may not have an authorized_keys file, but if it does already, and you want to replace your ssh public key for some reason, this will work in that case as well, without duplicating the entry.
This is sample output - yours may be different.
4

cat ~/.ssh/id_rsa.pub | ssh <REMOTE> "(cat > tmp.pubkey ; mkdir -p .ssh ; touch .ssh/authorized_keys ; sed -i.bak -e '/$(awk '{print $NF}' ~/.ssh/id_rsa.pub)/d' .ssh/authorized_keys; cat tmp.pubkey >> .ssh/authorized_keys; rm tmp.pubkey)"

tamouse · 2011-09-30 07:39:24 18
SSH Auto-login with password

You need to install "sshpass" for this to work. apt-get install sshpass
This is sample output - yours may be different.
4

sshpass -p "YOUR_PASSWORD" ssh -o StrictHostKeyChecking=no YOUR_USERNAME@SOME_SITE.COM

o0110o · 2013-05-24 14:33:38 12
Run a command on a remote machine

This counts the number of httpd processes running. Show Sample Output
This is sample output - yours may be different.
```
36
```
3

ssh user@host "ps aux | grep httpd | wc -l"

root · 2009-01-27 00:46:17 305
get a directory from one machine to another using tar and ssh
This is sample output - yours may be different.
3

ssh somemachine "cd some dir; tar zcpf - somedirname" |tar zxpf -

mischamolhoek · 2009-02-05 09:10:56 30
Send a backup job to a remote tape drive on another machine over SSH

I use this all the time for taking manual backups of stuff i want to keep but not important enough to backup regularly.
This is sample output - yours may be different.
3

tar cvzf - /directory/ | ssh root@host "cat > /dev/nst0"

Tuxmania · 2009-02-18 07:12:54 6
"hidden" remote shell

opens a "hidden" remote shell (login will not appear in "last" for example). This is not really hidden, because the login will be shown in auth.log and the process is visible anyways. ssh -T = Disable pseudo-tty allocation. bash -i = interactive shell
This is sample output - yours may be different.
3

ssh -T user@host /bin/bash -i

Bender · 2009-03-02 21:39:30 8
Get the version of sshd on a remote system

I used this to confirm an upgrade to an SSH daemon was successful Show Sample Output
This is sample output - yours may be different.
```
$ ssh -vN hostname 2>&1 | grep "remote software version" 
debug1: Remote protocol version 2.0, remote software version OpenSSH_3.6.1p2-CERT-patched
```
3

ssh -vN hostname 2>&1 | grep "remote software version"

sud0er · 2009-03-31 18:28:41 5
Duplicating service runlevel configurations from one server to another.

And then to complete the task: Go to target host; ssh host Turn everything off: for i in `chkconfig --list | fgrep :on | awk '{print $1}'` ; do chkconfig --level 12345 $i off; done Create duplicate config: while read line; do chkconfig --level $line on; done < foo
This is sample output - yours may be different.
3

chkconfig --list | fgrep :on | sed -e 's/$^.*$*0:off/\1:/g' -e 's/$.$:on/\1/g' -e 's/.:off//g' | tr -d [:blank:] | awk -F: '{print$2,$1}' | ssh host 'cat > foo'

catawampus · 2009-05-13 21:17:39 11
Paste OS X clipboard contents to a file on a remote machine

Redirects the contents of your clipboard through a pipe, to a remote machine via SSH.
This is sample output - yours may be different.
3

pbpaste | ssh user@hostname 'cat > ~/my_new_file.txt'

mikedamage · 2009-07-14 16:32:03 3
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Silently ensures that a FS is mounted on the given mount point (checks if it's OK, otherwise unmount, create dir and mount)

In my example, the mount point is /media/mpdr1 and the FS is /dev/sdd1 /mountpoint-path = /media/mpdr1 filesystem=/dev/sdd1 Why this command ? Well, in fact, with some external devices I used to face some issues : during data transfer from the device to the internal drive, some errors occurred and the device was unmounted and remounted again in a different folder. In such situations, the command mountpoint gave a positive result even if the FS wasn't properly mounted, that's why I added the df part. And if the device is not properly mounted, the command tries to unmount, to create the folder (if it exists already it will also work) and finally mount the FS on the given mount point.

Generate random valid mac addresses

First set the variable $hexchars: $hexchars="0123456789ABCDEF" Change the number in the first for loop if you need less then 1200 mac addresses

Test http request every second, fancy display.

Use the command watch, which is really hard to pass nested quotes to, and insert newlines where they are supposed to go in the HTTP request. that is after 1.1 after the host and two newlines at the end before the EOF. i use this all day what? no support for HEREDOCs on commandlinefu's interface? need more fu.

File rotation without rename command

Rotates log files with "gz"-extension in a directory for 7 days and enumerates the number in file name. i.e.: logfile.1.gz > logfile.2.gz I needed this line due to the limitations on AIX Unix systems which do not ship with the rename command.

Bind a key with a command

Now type Ctrl-l and it will list all files

gawk gets fixed width field

firefox: how many eat?

display a smiling smiley if the command succeeded and a sad smiley if the command failed

you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;)

Check a nfs mountpoint and force a remount if it does not reply after a given timeout.

Based on the execute with timeout command in this site. A more complex script: #!/bin/sh # This script will check the avaliability of a list of NFS mount point, # forcing a remount of those that do not respond in 5 seconds. # # It basically does this: # NFSPATH=/mountpoint TIMEOUT=5; perl -e "alarm $TIMEOUT; exec @ARGV" "test -d $NFSPATH" || (umount -fl $NFSPATH; mount $NFSPATH) # TIMEOUT=5 SCRIPT_NAME=$(basename $0) for i in $@; do echo "Checking $i..." if ! perl -e "alarm $TIMEOUT; exec @ARGV" "test -d $i" > /dev/null 2>&1; then echo "$SCRIPT_NAME: $i is failing with retcode $?."1>&2 echo "$SCRIPT_NAME: Submmiting umount -fl $i" 1>&2 umount -fl $i; echo "$SCRIPT_NAME: Submmiting mount $i" 1>&2 mount $i; fi done

find an unused unprivileged TCP port

Not really better - just different ;) There's probably a really simple solution out there somewhere...

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Commands using ssh (347)

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