Using the output of a command to generate an ssh login
I've got a script that I like a lot which generates a two-hopper ssh + port forwarded command.
ssh -N -f -o 'ControlMaster Auto' -o 'ControlPath /tmp/gimme_access' -o 'ControlPersist 1m' -L 6473:33.22.0.0:22 -i /home/sink/.ssh/id_dsa -o 'UserKnownHostsFile /home/sink/.ssh/known_hosts' -p 6000 sink@33.22.177.16 ; ssh -p 6473 -l noc -i /home/my_boy/.ssh/id_rsa -o 'StrictHostKeyChecking no' 127.0.0.1
this gets me on a number of disparate gizmos and I could re-rewrite it to just log me on to those machines, but I prefer that the command just output the connection string.
Is there anything that I can pipe the command that generates the above string and leave me logged in. I tried just piping to bash, but that logged me out right away.
bash ssh pipe
asked Dec 19 '18 at 19:51
Peter Turner
5631825
|
show 1 more comment
I've got a script that I like a lot which generates a two-hopper ssh + port forwarded command.
ssh -N -f -o 'ControlMaster Auto' -o 'ControlPath /tmp/gimme_access' -o 'ControlPersist 1m' -L 6473:33.22.0.0:22 -i /home/sink/.ssh/id_dsa -o 'UserKnownHostsFile /home/sink/.ssh/known_hosts' -p 6000 sink@33.22.177.16 ; ssh -p 6473 -l noc -i /home/my_boy/.ssh/id_rsa -o 'StrictHostKeyChecking no' 127.0.0.1
this gets me on a number of disparate gizmos and I could re-rewrite it to just log me on to those machines, but I prefer that the command just output the connection string.
Is there anything that I can pipe the command that generates the above string and leave me logged in. I tried just piping to bash, but that logged me out right away.
bash ssh pipe
asked Dec 19 '18 at 19:51
Peter Turner
5631825
Can't you justevalthe string?
– nohillside
Dec 19 '18 at 19:52
@nohillside "| eval" leaves me with ssh'ed in with a locked up console
– Peter Turner
Dec 19 '18 at 19:54
eval $string:-)
– nohillside
Dec 19 '18 at 19:55
Or probably rathereval $(command-which-produces-string)
– nohillside
Dec 19 '18 at 19:56
@nohillside , that'll do ! sweet - thanks. You want to make that an answer or is this too dumb of a question for a person who thinks they "know unix" to ask?
– Peter Turner
Dec 19 '18 at 19:57
|
show 1 more comment
I've got a script that I like a lot which generates a two-hopper ssh + port forwarded command.
ssh -N -f -o 'ControlMaster Auto' -o 'ControlPath /tmp/gimme_access' -o 'ControlPersist 1m' -L 6473:33.22.0.0:22 -i /home/sink/.ssh/id_dsa -o 'UserKnownHostsFile /home/sink/.ssh/known_hosts' -p 6000 sink@33.22.177.16 ; ssh -p 6473 -l noc -i /home/my_boy/.ssh/id_rsa -o 'StrictHostKeyChecking no' 127.0.0.1
this gets me on a number of disparate gizmos and I could re-rewrite it to just log me on to those machines, but I prefer that the command just output the connection string.
Is there anything that I can pipe the command that generates the above string and leave me logged in. I tried just piping to bash, but that logged me out right away.
bash ssh pipe
asked Dec 19 '18 at 19:51
Peter Turner
5631825
I've got a script that I like a lot which generates a two-hopper ssh + port forwarded command.
ssh -N -f -o 'ControlMaster Auto' -o 'ControlPath /tmp/gimme_access' -o 'ControlPersist 1m' -L 6473:33.22.0.0:22 -i /home/sink/.ssh/id_dsa -o 'UserKnownHostsFile /home/sink/.ssh/known_hosts' -p 6000 sink@33.22.177.16 ; ssh -p 6473 -l noc -i /home/my_boy/.ssh/id_rsa -o 'StrictHostKeyChecking no' 127.0.0.1
this gets me on a number of disparate gizmos and I could re-rewrite it to just log me on to those machines, but I prefer that the command just output the connection string.
Is there anything that I can pipe the command that generates the above string and leave me logged in. I tried just piping to bash, but that logged me out right away.
bash ssh pipe
bash ssh pipe
asked Dec 19 '18 at 19:51
Peter Turner
5631825
asked Dec 19 '18 at 19:51
Peter Turner
5631825
asked Dec 19 '18 at 19:51
Peter Turner
5631825
asked Dec 19 '18 at 19:51
Peter Turner
5631825
asked Dec 19 '18 at 19:51
Peter Turner
5631825
5631825
Can't you justevalthe string?
– nohillside
Dec 19 '18 at 19:52
@nohillside "| eval" leaves me with ssh'ed in with a locked up console
– Peter Turner
Dec 19 '18 at 19:54
eval $string:-)
– nohillside
Dec 19 '18 at 19:55
Or probably rathereval $(command-which-produces-string)
– nohillside
Dec 19 '18 at 19:56
@nohillside , that'll do ! sweet - thanks. You want to make that an answer or is this too dumb of a question for a person who thinks they "know unix" to ask?
– Peter Turner
Dec 19 '18 at 19:57
|
show 1 more comment
Can't you justevalthe string?
– nohillside
Dec 19 '18 at 19:52
@nohillside "| eval" leaves me with ssh'ed in with a locked up console
– Peter Turner
Dec 19 '18 at 19:54
eval $string:-)
– nohillside
Dec 19 '18 at 19:55
Or probably rathereval $(command-which-produces-string)
– nohillside
Dec 19 '18 at 19:56
@nohillside , that'll do ! sweet - thanks. You want to make that an answer or is this too dumb of a question for a person who thinks they "know unix" to ask?
– Peter Turner
Dec 19 '18 at 19:57
Can't you just
eval the string?– nohillside
Dec 19 '18 at 19:52
Can't you just
eval the string?– nohillside
Dec 19 '18 at 19:52
@nohillside "| eval" leaves me with ssh'ed in with a locked up console
– Peter Turner
Dec 19 '18 at 19:54
@nohillside "| eval" leaves me with ssh'ed in with a locked up console
– Peter Turner
Dec 19 '18 at 19:54
eval $string :-)– nohillside
Dec 19 '18 at 19:55
eval $string :-)– nohillside
Dec 19 '18 at 19:55
Or probably rather
eval $(command-which-produces-string)– nohillside
Dec 19 '18 at 19:56
Or probably rather
eval $(command-which-produces-string)– nohillside
Dec 19 '18 at 19:56
@nohillside , that'll do ! sweet - thanks. You want to make that an answer or is this too dumb of a question for a person who thinks they "know unix" to ask?
– Peter Turner
Dec 19 '18 at 19:57
@nohillside , that'll do ! sweet - thanks. You want to make that an answer or is this too dumb of a question for a person who thinks they "know unix" to ask?
– Peter Turner
Dec 19 '18 at 19:57
|
show 1 more comment
1 Answer
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votes
You can use eval to run a command stored in a string (or based on the output of another program):
eval 'echo Hello World'
eval $(magic-ssh-commmand-generator)
From man bash:
eval [arg ...]
The args are read and concatenated together into a single command.
This command is then read and executed by the shell, and its exit status
is returned as the value of eval. If there are no args, or only null
arguments, eval returns 0.
answered Dec 19 '18 at 20:00
nohillside
2,292819
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can use eval to run a command stored in a string (or based on the output of another program):
eval 'echo Hello World'
eval $(magic-ssh-commmand-generator)
From man bash:
eval [arg ...]
The args are read and concatenated together into a single command.
This command is then read and executed by the shell, and its exit status
is returned as the value of eval. If there are no args, or only null
arguments, eval returns 0.
answered Dec 19 '18 at 20:00
nohillside
2,292819
add a comment |
You can use eval to run a command stored in a string (or based on the output of another program):
eval 'echo Hello World'
eval $(magic-ssh-commmand-generator)
From man bash:
eval [arg ...]
The args are read and concatenated together into a single command.
This command is then read and executed by the shell, and its exit status
is returned as the value of eval. If there are no args, or only null
arguments, eval returns 0.
answered Dec 19 '18 at 20:00
nohillside
2,292819
add a comment |
You can use eval to run a command stored in a string (or based on the output of another program):
eval 'echo Hello World'
eval $(magic-ssh-commmand-generator)
From man bash:
eval [arg ...]
The args are read and concatenated together into a single command.
This command is then read and executed by the shell, and its exit status
is returned as the value of eval. If there are no args, or only null
arguments, eval returns 0.
answered Dec 19 '18 at 20:00
nohillside
2,292819
You can use eval to run a command stored in a string (or based on the output of another program):
eval 'echo Hello World'
eval $(magic-ssh-commmand-generator)
From man bash:
eval [arg ...]
The args are read and concatenated together into a single command.
This command is then read and executed by the shell, and its exit status
is returned as the value of eval. If there are no args, or only null
arguments, eval returns 0.
answered Dec 19 '18 at 20:00
nohillside
2,292819
answered Dec 19 '18 at 20:00
nohillside
2,292819
answered Dec 19 '18 at 20:00
nohillside
2,292819
answered Dec 19 '18 at 20:00
nohillside
2,292819
2,292819
add a comment |
add a comment |
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Can't you just
evalthe string?– nohillside
Dec 19 '18 at 19:52
@nohillside "| eval" leaves me with ssh'ed in with a locked up console
– Peter Turner
Dec 19 '18 at 19:54
eval $string:-)– nohillside
Dec 19 '18 at 19:55
Or probably rather
eval $(command-which-produces-string)– nohillside
Dec 19 '18 at 19:56
@nohillside , that'll do ! sweet - thanks. You want to make that an answer or is this too dumb of a question for a person who thinks they "know unix" to ask?
– Peter Turner
Dec 19 '18 at 19:57