escaping awk with remote ssh command and bash that is already escaped

Question

Hello.

ssh ufk@10.0.0.2  "bash -lc 'pm2 list | grep app | awk { print $3} '"

I need to run the command I pasted here. the problem is that i'm already escaping twice... the bash with " and the pm2 with '. how can i escape awk ?

i know that it will work if i escape it with awk '{ print $3 }' but the all command is already escaped twice... so .. what do i do ?

update

i created the following bash command:

PM2_APP_ID=`$REMOTE_SRV_SSH_COMMAND "bash -lc \"pm2 list | grep app | grep -v 'pm2 show' | awk '{ print \\\$4 }'\""`;

here i get the all pm2 list relevant line, it's like awk is never been executed.

Answer 1

You can't backslash-escape single quotes inside single-quoted strings, but you can backslash-escape double quotes inside a double-quoted string. So you could do this:

ssh ufk@10.0.0.2  "bash -lc \"pm2 list | grep app | awk '{ print \\\$3 }'\""

You need to escape the $ in the awk program twice to avoid the $3 from being expanded, first by local shell and then by the remote one.

Answer 2

thanks @dave_thompson_085 for your comment, that helped me resolve the issue.

i'm using the following command:

PM2_APP_ID=`$REMOTE_SRV_SSH_COMMAND "bash -lc 'pm2 list'" | grep app | grep -v 'pm2 show' | awk '{ print $4 }'`;

as you can see here i use pm2 list on remove server, and the rest i'm doing locally. no hassle with escaping things and it works properly.