linux - how to execute ssh comand on .sh file? -

i trying create .sh file execute things "pwd" or "ls" command. problem when execute .sh file. seems not recognize tasks tried use echo example : echo 'lsapps' or echo "lsapps" prints name of task instead execute comand

for example want execute .ssh file makes pwd

var_1=pwd echo $var_1 

but prints me pwd instead current path ... idea?

echo used print on screen (man page reference). if echo 'isapps' take string , print it. if want execute command can doing isapps (acutes not quotes, acute below escape key). execute command , show output on screen. if want store output of command in variable, can

<variable_name>=`isapps` 

this store output in variable. note there no space between variable name , command. also, not quotes instead acutes. print variable on screen can use echo doing echo $<variable_name>

if don't want see output @ all. can do

isapps > /dev/null 

this execute command not see stdout on screen.

as far ssh concerned, ssh-keygen , ssh-copy-id user@remote_ip set ssh keys don't have enter password ssh. once have done that, can use ssh user@remote_ip in shell script.