Pass variable to spawn

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3
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I want to pass server name which is listed in a file (servers_list) as variable to spawn command which is in another script (user_create_script). Purpose of this script is to create user(david) in multiple servers.



#cat servers_list
server1
server2
server3


#cat user_create_script
 spawn ssh -t user@$i sudo /usr/sbin/useradd david
 expect "password:"
 send "pass123r"
 interact


Can anyone help me to achieve this.






shell scripting expect







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  • would you please read this answer unix.stackexchange.com/questions/187339/spawn-command-not-found
    – Goro
    2 hours ago






  • 1




    @Goro, thanks alot. Given link is very helpful. My Problem solved. Thanks aton
    – Dev
    1 hour ago














up vote
3
down vote

favorite












I want to pass server name which is listed in a file (servers_list) as variable to spawn command which is in another script (user_create_script). Purpose of this script is to create user(david) in multiple servers.



#cat servers_list
server1
server2
server3


#cat user_create_script
 spawn ssh -t user@$i sudo /usr/sbin/useradd david
 expect "password:"
 send "pass123r"
 interact


Can anyone help me to achieve this.






shell scripting expect







share|improve this question







New contributor




Dev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.



















  • would you please read this answer unix.stackexchange.com/questions/187339/spawn-command-not-found
    – Goro
    2 hours ago






  • 1




    @Goro, thanks alot. Given link is very helpful. My Problem solved. Thanks aton
    – Dev
    1 hour ago












up vote
3
down vote

favorite









up vote
3
down vote

favorite











I want to pass server name which is listed in a file (servers_list) as variable to spawn command which is in another script (user_create_script). Purpose of this script is to create user(david) in multiple servers.



#cat servers_list
server1
server2
server3


#cat user_create_script
 spawn ssh -t user@$i sudo /usr/sbin/useradd david
 expect "password:"
 send "pass123r"
 interact


Can anyone help me to achieve this.






shell scripting expect







share|improve this question







New contributor




Dev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











I want to pass server name which is listed in a file (servers_list) as variable to spawn command which is in another script (user_create_script). Purpose of this script is to create user(david) in multiple servers.



#cat servers_list
server1
server2
server3


#cat user_create_script
 spawn ssh -t user@$i sudo /usr/sbin/useradd david
 expect "password:"
 send "pass123r"
 interact


Can anyone help me to achieve this.






shell scripting expect




shell scripting expect






share|improve this question







New contributor




Dev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







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Dev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question






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asked 3 hours ago









Dev

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New contributor





Dev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






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Check out our Code of Conduct.











  • would you please read this answer unix.stackexchange.com/questions/187339/spawn-command-not-found
    – Goro
    2 hours ago






  • 1




    @Goro, thanks alot. Given link is very helpful. My Problem solved. Thanks aton
    – Dev
    1 hour ago
















  • would you please read this answer unix.stackexchange.com/questions/187339/spawn-command-not-found
    – Goro
    2 hours ago






  • 1




    @Goro, thanks alot. Given link is very helpful. My Problem solved. Thanks aton
    – Dev
    1 hour ago















would you please read this answer unix.stackexchange.com/questions/187339/spawn-command-not-found
– Goro
2 hours ago




would you please read this answer unix.stackexchange.com/questions/187339/spawn-command-not-found
– Goro
2 hours ago




1




1




@Goro, thanks alot. Given link is very helpful. My Problem solved. Thanks aton
– Dev
1 hour ago




@Goro, thanks alot. Given link is very helpful. My Problem solved. Thanks aton
– Dev
1 hour ago










1 Answer
1






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up vote
3
down vote













You'd have
user_create_script like this



#!/usr/bin/expect -f
set fh [open servers_list r]
while [gets $fh server_name] != -1 
 spawn ssh -t user@$server_name sudo /usr/sbin/useradd david
 expect "password:"
 send "pass123r"
 expect eof

close $fh


I assume your remote user does not require a password for sudo.



More documentation about Tcl (upon which expect is built), including tutorials, is here: https://tcl.tk/doc/






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    up vote
    3
    down vote













    You'd have
    user_create_script like this



    #!/usr/bin/expect -f
    set fh [open servers_list r]
    while [gets $fh server_name] != -1 
     spawn ssh -t user@$server_name sudo /usr/sbin/useradd david
     expect "password:"
     send "pass123r"
     expect eof

    close $fh


    I assume your remote user does not require a password for sudo.



    More documentation about Tcl (upon which expect is built), including tutorials, is here: https://tcl.tk/doc/






    share|improve this answer
























      up vote
      3
      down vote













      You'd have
      user_create_script like this



      #!/usr/bin/expect -f
      set fh [open servers_list r]
      while [gets $fh server_name] != -1 
       spawn ssh -t user@$server_name sudo /usr/sbin/useradd david
       expect "password:"
       send "pass123r"
       expect eof

      close $fh


      I assume your remote user does not require a password for sudo.



      More documentation about Tcl (upon which expect is built), including tutorials, is here: https://tcl.tk/doc/






      share|improve this answer






















        up vote
        3
        down vote










        up vote
        3
        down vote









        You'd have
        user_create_script like this



        #!/usr/bin/expect -f
        set fh [open servers_list r]
        while [gets $fh server_name] != -1 
         spawn ssh -t user@$server_name sudo /usr/sbin/useradd david
         expect "password:"
         send "pass123r"
         expect eof

        close $fh


        I assume your remote user does not require a password for sudo.



        More documentation about Tcl (upon which expect is built), including tutorials, is here: https://tcl.tk/doc/






        share|improve this answer












        You'd have
        user_create_script like this



        #!/usr/bin/expect -f
        set fh [open servers_list r]
        while [gets $fh server_name] != -1 
         spawn ssh -t user@$server_name sudo /usr/sbin/useradd david
         expect "password:"
         send "pass123r"
         expect eof

        close $fh


        I assume your remote user does not require a password for sudo.



        More documentation about Tcl (upon which expect is built), including tutorials, is here: https://tcl.tk/doc/







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 1 hour ago









        glenn jackman

        49k467105




        49k467105




















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