$ help suspendsuspend: suspend [-f]    Suspend shell execution.    Suspend the execution of this shell until it receives a SIGCONT signal.How should I send a SIGCONT signal to a shell suspended by suspend in a gnome terminal tab?
How to resume a suspended shell?
bash;shell
Send SIGCONTThe only way to resume the suspended shell is to send the SIGCONT signal, presumably from another shell. You'll need to know the PID (process ID) of the shell.kill -cont $shellpidIf you don't know the PID already, try this:ps x | grep bashFor example, when I suspended my shell, I saw this with ps x | grep bash: 6147 pts/14   S+     0:00 grep --color bash 6172 pts/14   Ss     0:01 /bin/bash15085 pts/0    Ss+    0:00 /bin/bash15121 pts/12   Ts+    0:01 /bin/bashLook at that third column. The shell you want is the one with the T, and that one has a PID (first column) of 15121. Of course the PID in your case will differ; this was just an example. Once you find the PID (let's say it is 15121), then run:kill -cont 15121