ssh

How to list all available repositories on a Git server via ssh 12

 in Bash / GNU/Linux / HowTos  tagged bash / git / gitolite / GNU/Linux / howtos / ssh by

ssh [email protected] info

The above ssh call will connect to a Git hosting server that has gitolite installed and will return the list of repositories that are available to your account along with the access rights of each.

Note: This command should work even if remote login via ssh is blocked on the server.

The command should return a list similar to this:

hello bytefreaks, this is git@git running gitolite3 v3.5.3.1-1-gf8776f5 on git 1.7.1

 R W	Repo1
 R W	Repo2
 R W	Repo3
 R  	Repo4

The first column in the results is the read flag, the second the write flag and the third column is the name of the repository.

In order to clone (get a local copy) a repository from the above list (for the example lets use Repo1) you have to issue the following command


git clone ssh://[email protected]/Repo1

To clone all of the repositories in the current directory with one command, as it is shown in this guide, issue the following command:


ssh [email protected] info | cut -f 2 | tail -n +3 | xargs -I {} -n 1 git clone ssh://[email protected]/{}

How to call ‘top’ on a remote machine using ssh 8

 in Bash / GNU/Linux / HowTos  tagged bash / GNU/Linux / head / howtos / remote access / ssh / top by

Some times it is not straight forward to call some remote commands using ssh (example of syntax here). Commands like top will not execute as is because they need some environment variables modified due to their interactive nature.

Usage example of wrong remote call to top and its result:

ssh remoteMachine 'top'
TERM environment variable not set.

We cannot really describe all of the solutions available but since we are talking about top, we will present a very simple solution.
Luckily, top can be executed in batch mode, which is used for sending output from top to other programs or files by invoking the -b parameter and thus changing the command syntax to:

ssh remoteMachine 'top -b'

This will work just fine but give you a full page of results which might be too much info. To limit the results that you are receiving you can filter the top command results with other commands like head. In the following example we use head to limit the number of rows retrieved to 8, so that we get the system status and the most computational intensive command of our system.

ssh remoteMachine 'top -b | head -n 8'

Which will result to something like this:

top - 07:29:38 up 1:04, 0 users, load average: 2.85, 2.83, 2.24
Tasks: 62 total, 2 running, 60 sleeping, 0 stopped, 0 zombie
Cpu(s): 27.8%us, 0.4%sy, 0.0%ni, 71.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1022116k total, 68960k used, 953156k free, 4364k buffers
Swap: 3905532k total, 0k used, 3905532k free, 22776k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
842 userName 20 0 32212 1320 1120 R 188 0.1 46:51.91 application.binary