shell script at ssh login screen
up vote
0
down vote
favorite
I want to run this command when there is an ssh login.
The command is
watch -n 5 'zen-cli getinfo | grep blocks'
I have already added this line by doing this
sudo crontab -e
I added @reboot watch -n 5 'zen-cli getinfo | grep blocks' in crontab
But it does not solve my problem. I want to show this specefic output at the startup screen when there is ssh login like the following:
Welcome to Ubuntu 18.04.1 LTS (GNU/Linux 4.4.154-1124-rockchip-ayufan-ged3ce4d15ec1 aarch64)
_ __ _ _
_ __ ___ ___| | ___ __ _ __ ___ / /_ | || |
| '__/ _ / __| |/ / '_ | '__/ _ | '_ | || |_
| | | (_) | (__| <| |_) | | | (_) | (_) |__ _|
|_| ___/ ___|_|_ .__/|_| ___/ ___/ |_|
|_|
* Documentation:
* Management:
* Support:
System information as of Wed Dec 5 06:58:25 UTC 2018
System load: 0.28 Processes: 163
Usage of /: 24.1% of 58.39GB Users logged in: 0
Memory usage: 26% IP address for eth0: 192.168.100.82
Swap usage: 0%
* MicroK8s is Kubernetes in a snap. Made by devs for devs.
One quick install on a workstation, VM, or appliance.
Current zen blocks are synced at
When I run my sh code it returns
rock64@rockpro64:/etc/update-motd.d$ sh 90-figlet
+ zen-cli getinfo
+ grep blocks
+ printf Current zen blocks are synced at "blocks": 424064,
but when I exit and login again, at login it shows this Current zen blocks are synced at <blank>
This is my sh code
#!/bin/sh
set -x
printf "Current zen blocks are synced at $(zen-cli getinfo | grep blocks)"
ssh motd
asked Dec 5 at 7:38
Rakib Fiha
135
|
show 3 more comments
up vote
0
down vote
favorite
I want to run this command when there is an ssh login.
The command is
watch -n 5 'zen-cli getinfo | grep blocks'
I have already added this line by doing this
sudo crontab -e
I added @reboot watch -n 5 'zen-cli getinfo | grep blocks' in crontab
But it does not solve my problem. I want to show this specefic output at the startup screen when there is ssh login like the following:
Welcome to Ubuntu 18.04.1 LTS (GNU/Linux 4.4.154-1124-rockchip-ayufan-ged3ce4d15ec1 aarch64)
_ __ _ _
_ __ ___ ___| | ___ __ _ __ ___ / /_ | || |
| '__/ _ / __| |/ / '_ | '__/ _ | '_ | || |_
| | | (_) | (__| <| |_) | | | (_) | (_) |__ _|
|_| ___/ ___|_|_ .__/|_| ___/ ___/ |_|
|_|
* Documentation:
* Management:
* Support:
System information as of Wed Dec 5 06:58:25 UTC 2018
System load: 0.28 Processes: 163
Usage of /: 24.1% of 58.39GB Users logged in: 0
Memory usage: 26% IP address for eth0: 192.168.100.82
Swap usage: 0%
* MicroK8s is Kubernetes in a snap. Made by devs for devs.
One quick install on a workstation, VM, or appliance.
Current zen blocks are synced at
When I run my sh code it returns
rock64@rockpro64:/etc/update-motd.d$ sh 90-figlet
+ zen-cli getinfo
+ grep blocks
+ printf Current zen blocks are synced at "blocks": 424064,
but when I exit and login again, at login it shows this Current zen blocks are synced at <blank>
This is my sh code
#!/bin/sh
set -x
printf "Current zen blocks are synced at $(zen-cli getinfo | grep blocks)"
ssh motd
asked Dec 5 at 7:38
Rakib Fiha
135
2
Watch is a command that doesn't terminate on its own. Do you want the account to be unable to do anything on the machine (other than seeing the output ofwatch)?
– Ulrich Schwarz
Dec 5 at 7:43
I do not needwatchi think, I just use it manually for convenience. I am doing some memory intensive work on this device andwatchis not the primary function, just need it to make things convenient so that the users do not have to runzen-cli getinfo | grep blocksevery-time they log in. and also to make sure that the server is running
– Rakib Fiha
Dec 5 at 7:50
1
Seeing as you're running ubuntu, just put your script in /etc/update-motd.d/ ... ?
– tink
Dec 5 at 8:08
I tried that, but it does not work
– Rakib Fiha
Dec 5 at 8:33
Did you make the script executable withchmod +x? Also, you probably want to remove that entry from the crontab. It tells the system to run the watch command on Boot, but it doesn't print its output anywhere as there is no session (it's useless).
– Panki
Dec 5 at 9:08
|
show 3 more comments
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I want to run this command when there is an ssh login.
The command is
watch -n 5 'zen-cli getinfo | grep blocks'
I have already added this line by doing this
sudo crontab -e
I added @reboot watch -n 5 'zen-cli getinfo | grep blocks' in crontab
But it does not solve my problem. I want to show this specefic output at the startup screen when there is ssh login like the following:
Welcome to Ubuntu 18.04.1 LTS (GNU/Linux 4.4.154-1124-rockchip-ayufan-ged3ce4d15ec1 aarch64)
_ __ _ _
_ __ ___ ___| | ___ __ _ __ ___ / /_ | || |
| '__/ _ / __| |/ / '_ | '__/ _ | '_ | || |_
| | | (_) | (__| <| |_) | | | (_) | (_) |__ _|
|_| ___/ ___|_|_ .__/|_| ___/ ___/ |_|
|_|
* Documentation:
* Management:
* Support:
System information as of Wed Dec 5 06:58:25 UTC 2018
System load: 0.28 Processes: 163
Usage of /: 24.1% of 58.39GB Users logged in: 0
Memory usage: 26% IP address for eth0: 192.168.100.82
Swap usage: 0%
* MicroK8s is Kubernetes in a snap. Made by devs for devs.
One quick install on a workstation, VM, or appliance.
Current zen blocks are synced at
When I run my sh code it returns
rock64@rockpro64:/etc/update-motd.d$ sh 90-figlet
+ zen-cli getinfo
+ grep blocks
+ printf Current zen blocks are synced at "blocks": 424064,
but when I exit and login again, at login it shows this Current zen blocks are synced at <blank>
This is my sh code
#!/bin/sh
set -x
printf "Current zen blocks are synced at $(zen-cli getinfo | grep blocks)"
ssh motd
asked Dec 5 at 7:38
Rakib Fiha
135
I want to run this command when there is an ssh login.
The command is
watch -n 5 'zen-cli getinfo | grep blocks'
I have already added this line by doing this
sudo crontab -e
I added @reboot watch -n 5 'zen-cli getinfo | grep blocks' in crontab
But it does not solve my problem. I want to show this specefic output at the startup screen when there is ssh login like the following:
Welcome to Ubuntu 18.04.1 LTS (GNU/Linux 4.4.154-1124-rockchip-ayufan-ged3ce4d15ec1 aarch64)
_ __ _ _
_ __ ___ ___| | ___ __ _ __ ___ / /_ | || |
| '__/ _ / __| |/ / '_ | '__/ _ | '_ | || |_
| | | (_) | (__| <| |_) | | | (_) | (_) |__ _|
|_| ___/ ___|_|_ .__/|_| ___/ ___/ |_|
|_|
* Documentation:
* Management:
* Support:
System information as of Wed Dec 5 06:58:25 UTC 2018
System load: 0.28 Processes: 163
Usage of /: 24.1% of 58.39GB Users logged in: 0
Memory usage: 26% IP address for eth0: 192.168.100.82
Swap usage: 0%
* MicroK8s is Kubernetes in a snap. Made by devs for devs.
One quick install on a workstation, VM, or appliance.
Current zen blocks are synced at
When I run my sh code it returns
rock64@rockpro64:/etc/update-motd.d$ sh 90-figlet
+ zen-cli getinfo
+ grep blocks
+ printf Current zen blocks are synced at "blocks": 424064,
but when I exit and login again, at login it shows this Current zen blocks are synced at <blank>
This is my sh code
#!/bin/sh
set -x
printf "Current zen blocks are synced at $(zen-cli getinfo | grep blocks)"
ssh motd
ssh motd
asked Dec 5 at 7:38
Rakib Fiha
135
asked Dec 5 at 7:38
Rakib Fiha
135
edited Dec 6 at 7:27
asked Dec 5 at 7:38
Rakib Fiha
135
asked Dec 5 at 7:38
Rakib Fiha
135
asked Dec 5 at 7:38
Rakib Fiha
135
135
2
Watch is a command that doesn't terminate on its own. Do you want the account to be unable to do anything on the machine (other than seeing the output ofwatch)?
– Ulrich Schwarz
Dec 5 at 7:43
I do not needwatchi think, I just use it manually for convenience. I am doing some memory intensive work on this device andwatchis not the primary function, just need it to make things convenient so that the users do not have to runzen-cli getinfo | grep blocksevery-time they log in. and also to make sure that the server is running
– Rakib Fiha
Dec 5 at 7:50
1
Seeing as you're running ubuntu, just put your script in /etc/update-motd.d/ ... ?
– tink
Dec 5 at 8:08
I tried that, but it does not work
– Rakib Fiha
Dec 5 at 8:33
Did you make the script executable withchmod +x? Also, you probably want to remove that entry from the crontab. It tells the system to run the watch command on Boot, but it doesn't print its output anywhere as there is no session (it's useless).
– Panki
Dec 5 at 9:08
|
show 3 more comments
2
Watch is a command that doesn't terminate on its own. Do you want the account to be unable to do anything on the machine (other than seeing the output ofwatch)?
– Ulrich Schwarz
Dec 5 at 7:43
I do not needwatchi think, I just use it manually for convenience. I am doing some memory intensive work on this device andwatchis not the primary function, just need it to make things convenient so that the users do not have to runzen-cli getinfo | grep blocksevery-time they log in. and also to make sure that the server is running
– Rakib Fiha
Dec 5 at 7:50
1
Seeing as you're running ubuntu, just put your script in /etc/update-motd.d/ ... ?
– tink
Dec 5 at 8:08
I tried that, but it does not work
– Rakib Fiha
Dec 5 at 8:33
Did you make the script executable withchmod +x? Also, you probably want to remove that entry from the crontab. It tells the system to run the watch command on Boot, but it doesn't print its output anywhere as there is no session (it's useless).
– Panki
Dec 5 at 9:08
2
2
Watch is a command that doesn't terminate on its own. Do you want the account to be unable to do anything on the machine (other than seeing the output of
watch)?– Ulrich Schwarz
Dec 5 at 7:43
Watch is a command that doesn't terminate on its own. Do you want the account to be unable to do anything on the machine (other than seeing the output of
watch)?– Ulrich Schwarz
Dec 5 at 7:43
I do not need
watch i think, I just use it manually for convenience. I am doing some memory intensive work on this device and watch is not the primary function, just need it to make things convenient so that the users do not have to run zen-cli getinfo | grep blocks every-time they log in. and also to make sure that the server is running– Rakib Fiha
Dec 5 at 7:50
I do not need
watch i think, I just use it manually for convenience. I am doing some memory intensive work on this device and watch is not the primary function, just need it to make things convenient so that the users do not have to run zen-cli getinfo | grep blocks every-time they log in. and also to make sure that the server is running– Rakib Fiha
Dec 5 at 7:50
1
1
Seeing as you're running ubuntu, just put your script in /etc/update-motd.d/ ... ?
– tink
Dec 5 at 8:08
Seeing as you're running ubuntu, just put your script in /etc/update-motd.d/ ... ?
– tink
Dec 5 at 8:08
I tried that, but it does not work
– Rakib Fiha
Dec 5 at 8:33
I tried that, but it does not work
– Rakib Fiha
Dec 5 at 8:33
Did you make the script executable with
chmod +x? Also, you probably want to remove that entry from the crontab. It tells the system to run the watch command on Boot, but it doesn't print its output anywhere as there is no session (it's useless).– Panki
Dec 5 at 9:08
Did you make the script executable with
chmod +x? Also, you probably want to remove that entry from the crontab. It tells the system to run the watch command on Boot, but it doesn't print its output anywhere as there is no session (it's useless).– Panki
Dec 5 at 9:08
|
show 3 more comments
1 Answer
1
active
oldest
votes
up vote
0
down vote
This seems to be an issue with the environment not being fully initialized.
The following works for me:
#!/bin/sh
# set -x
blocks=`sudo zen-cli getinfo | grep "blocks"`
printf "n"
printf "Current zen blocks are synced at $blocksn"
answered Dec 5 at 13:07
Djo
12
I have just tried it but did not work. It is strange because when I runrun-parts /etc/update-motd.d/it works, but when I exit and re login via ssh, it does not. I mean the line ends after.....synced at
– Rakib Fiha
Dec 6 at 7:34
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
This seems to be an issue with the environment not being fully initialized.
The following works for me:
#!/bin/sh
# set -x
blocks=`sudo zen-cli getinfo | grep "blocks"`
printf "n"
printf "Current zen blocks are synced at $blocksn"
answered Dec 5 at 13:07
Djo
12
I have just tried it but did not work. It is strange because when I runrun-parts /etc/update-motd.d/it works, but when I exit and re login via ssh, it does not. I mean the line ends after.....synced at
– Rakib Fiha
Dec 6 at 7:34
add a comment |
up vote
0
down vote
This seems to be an issue with the environment not being fully initialized.
The following works for me:
#!/bin/sh
# set -x
blocks=`sudo zen-cli getinfo | grep "blocks"`
printf "n"
printf "Current zen blocks are synced at $blocksn"
answered Dec 5 at 13:07
Djo
12
I have just tried it but did not work. It is strange because when I runrun-parts /etc/update-motd.d/it works, but when I exit and re login via ssh, it does not. I mean the line ends after.....synced at
– Rakib Fiha
Dec 6 at 7:34
add a comment |
up vote
0
down vote
up vote
0
down vote
This seems to be an issue with the environment not being fully initialized.
The following works for me:
#!/bin/sh
# set -x
blocks=`sudo zen-cli getinfo | grep "blocks"`
printf "n"
printf "Current zen blocks are synced at $blocksn"
answered Dec 5 at 13:07
Djo
12
This seems to be an issue with the environment not being fully initialized.
The following works for me:
#!/bin/sh
# set -x
blocks=`sudo zen-cli getinfo | grep "blocks"`
printf "n"
printf "Current zen blocks are synced at $blocksn"
answered Dec 5 at 13:07
Djo
12
edited Dec 5 at 13:33
answered Dec 5 at 13:07
Djo
12
answered Dec 5 at 13:07
Djo
12
answered Dec 5 at 13:07
Djo
12
12
I have just tried it but did not work. It is strange because when I runrun-parts /etc/update-motd.d/it works, but when I exit and re login via ssh, it does not. I mean the line ends after.....synced at
– Rakib Fiha
Dec 6 at 7:34
add a comment |
I have just tried it but did not work. It is strange because when I runrun-parts /etc/update-motd.d/it works, but when I exit and re login via ssh, it does not. I mean the line ends after.....synced at
– Rakib Fiha
Dec 6 at 7:34
I have just tried it but did not work. It is strange because when I run
run-parts /etc/update-motd.d/ it works, but when I exit and re login via ssh, it does not. I mean the line ends after .....synced at– Rakib Fiha
Dec 6 at 7:34
I have just tried it but did not work. It is strange because when I run
run-parts /etc/update-motd.d/ it works, but when I exit and re login via ssh, it does not. I mean the line ends after .....synced at– Rakib Fiha
Dec 6 at 7:34
add a comment |
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2
Watch is a command that doesn't terminate on its own. Do you want the account to be unable to do anything on the machine (other than seeing the output of
watch)?– Ulrich Schwarz
Dec 5 at 7:43
I do not need
watchi think, I just use it manually for convenience. I am doing some memory intensive work on this device andwatchis not the primary function, just need it to make things convenient so that the users do not have to runzen-cli getinfo | grep blocksevery-time they log in. and also to make sure that the server is running– Rakib Fiha
Dec 5 at 7:50
1
Seeing as you're running ubuntu, just put your script in /etc/update-motd.d/ ... ?
– tink
Dec 5 at 8:08
I tried that, but it does not work
– Rakib Fiha
Dec 5 at 8:33
Did you make the script executable with
chmod +x? Also, you probably want to remove that entry from the crontab. It tells the system to run the watch command on Boot, but it doesn't print its output anywhere as there is no session (it's useless).– Panki
Dec 5 at 9:08