I've searched on here for a bit and can't find someone who is going through this issue.
I have a tool/script I am building that uses sshpass to login to a remote host and pull logs, restart, etc... If I run the function within the main script it runs with no issues. If I source the script with the function, then it runs well if its accessing a windows IOT Core remote host, but will not execute commands if the remote host is linux.
My device:
Macbook Pro 2018
macOs Mojave 10.14.2
Application
Terminal
Here's what works:
mainFile.sh:
#!/bin/bash
function pullWindowsLog {
sshpass -p 'password' ssh [email protected] <<EOF
powershell.exe
Get-Content c:\Path\To\Log\Log.log -tail 10
EOF
}
function pullLinuxLog {
sshpass -p 'password' ssh [email protected] <<EOF
echo 'password' | sudo -S docker logs --tail 10 container
EOF
}
function mainMenu {
local PS3="What would you like to do?"
local options=("Pull Windows Log" "Pull Linux Logs" "Quit")
select opt in "${options[@]}"
do
case $opt in
"Pull Windows Log")
pullWindowsLog
;;
"Pull Linux Logs")
pullLinuxLog
;;
"Quit")
clear
break
;;
*) echo "\ninvalid option \n";;
esac
done
}
mainMenu
Output:
1) Pull Windows Log
2) Pull Linux Logs
3) Quit
What would you like to do?1 # <- user input
Pseudo-terminal will not be allocated because stdin is not a terminal.
Microsoft Windows [Version 0.0.0.0]
Copyright (c) Microsoft Corporation. All rights reserved.
user@WindowsDevice C:\Data\Users\User>powershell.exe
Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
PS C:\Data\Users\User> Get-Content c:\Path\To\Log\Log.log -tail 10
00:00:00.0000 Log line 1
00:00:00.0000 Log line 2
00:00:00.0000 Log line 3
00:00:00.0000 Log line 4
00:00:00.0000 Log line 5
00:00:00.0000 Log line 6
00:00:00.0000 Log line 7
00:00:00.0000 Log line 8
00:00:00.0000 Log line 9
00:00:00.0000 Log line 10
PS C:\Data\Users\User>
What would you like to do?2 # <- user input
Pseudo-terminal will not be allocated because stdin is not a terminal.
Welcome to Ubuntu 00.00.00
System information as of Day Mon 0 00:00:00 xxx Year
System load: 0.00 Users logged in: 0
Usage of /: 00.0% of 00.00GB IP address for eth0: 00.00.00.00
Memory usage: 00% IP address for eth1: 00.00.00.00
Swap usage: 0% IP address for eth2: 00.00.00.00
Processes: 000
0 packages can be updated.
0 updates are security updates.
[sudo] password for user:
00:00:00.0000 Log line 1
00:00:00.0000 Log line 2
00:00:00.0000 Log line 3
00:00:00.0000 Log line 4
00:00:00.0000 Log line 5
00:00:00.0000 Log line 6
00:00:00.0000 Log line 7
00:00:00.0000 Log line 8
00:00:00.0000 Log line 9
00:00:00.0000 Log line 10
What would you like to do?3 # <- user input
What I would prefer, but is not working:
MainFile.sh:
#!/bin/bash
source pullWindowsLog.sh
source pullLinuxLog.sh
function mainMenu {
local PS3="What would you like to do?"
local options=("Pull Windows Log" "Pull Linux Logs" "Quit")
select opt in "${options[@]}"
do
case $opt in
"Pull Windows Log")
pullWindowsLog
;;
"Pull Linux Logs")
pullLinuxLog
;;
"Quit")
clear
break
;;
*) echo "\ninvalid option \n";;
esac
done
}
mainMenu
pullWindowsLog.sh:
#!/bin/bash
function pullWindowsLog {
sshpass -p 'password' ssh [email protected] <<EOF
powershell.exe
Get-Content c:\Path\To\Log\Log.log -tail 10
EOF
}
pullLinuxLog.sh:
#!/bin/bash
function pullLinuxLog {
sshpass -p 'password' ssh [email protected] <<EOF
echo 'password' | sudo -S docker logs --tail 10 container
EOF
}
Output:
1) Pull Windows Log
2) Pull Linux Logs
3) Quit
What would you like to do?1 # <- user input
Pseudo-terminal will not be allocated because stdin is not a terminal.
Microsoft Windows [Version 0.0.0.0]
Copyright (c) Microsoft Corporation. All rights reserved.
user@WindowsDevice C:\Data\Users\User>powershell.exe
Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
PS C:\Data\Users\User> Get-Content c:\Path\To\Log\Log.log -tail 10
00:00:00.0000 Log line 1
00:00:00.0000 Log line 2
00:00:00.0000 Log line 3
00:00:00.0000 Log line 4
00:00:00.0000 Log line 5
00:00:00.0000 Log line 6
00:00:00.0000 Log line 7
00:00:00.0000 Log line 8
00:00:00.0000 Log line 9
00:00:00.0000 Log line 10
PS C:\Data\Users\User>
What would you like to do?2 # <- user input
Pseudo-terminal will not be allocated because stdin is not a terminal.
What would you like to do?3 # <- user input
For anyone concerned with security, I do not have any passwords hardcoded in the script. I just wrote it this way for the question. I am not having issues with passing variables, just how sshpass is acting when being sourced. I don't understand why there would be a difference on the remote host OS, but it is the only thing that is different. I tried running just an ls or echo and nothing. I also tried sshpass -p 'password' ssh [email protected] <command> and didnt even get a Pseudo-terminal will not be allocated because stdin is not a terminal.. As you can see in the first output, the linux system information is loaded. This is not happening in the second output.
I understand that I could just have everything in one script, but I am hoping to expand on this tool and would rather just add a menu item when the tool is ready. Also keeping the environment clean will allow me to easily pass this on to someone else to expand.
I hope I provided enough information (probably TMI at this point) for some terminal genius to figure this out.
Thank you in advance.
Figured it out. I feel like I should have known this, but somehow it slipped my mind. I had to add -t -oStrictHostKeyChecking=no on sshpass. so the command should be
sshpass -p 'password' ssh -t -oStrictHostKeyChecking=no "[email protected]" <<EOF
echo 'password' | sudo -S docker logs --tail 10 container
EOF
Hopefully someone finds this and it helps them.