Hi, In data mercoledì 24 giugno 2015 15:20:09, Priyanka Ranjan ha scritto: guestfish is shell exposing the libguestfs APIs, but without many actual shell features. If you need to do more complex logic than just executing commands one after the other, then most probably there are two options: (a) split the job in different guestfish calls. Pro: you can do using guestfish different operations depending on the results, etc. Contra: the appliance is booted once each guestfish run, so disks are remounted every time, and you need to parse the string output of guestfish yourself. (b) switch to some programming language API for the job you are doing. Anything among C, OCaml, Python, Perl, etc, should be equivalent. Pro: complex language API available, with data structures, conditionals, etc. Contra: more than a simple shell script, and will require to rewrite the current guestfish-using shell script. Between the two choices, my personal recommendation would be (b). -- Pino Toscano