View original (French)

Bash exercise

orque -  
Hello,
please, how to read from a file when working on the bash shell

the exercise is as follows for more information:
create a script called "convertisseur" that allows you to convert an amount in Francs passed as an argument into Euros. The conversion rate will be contained in a file named Taux in the form: Taux: 6.55957. Remember to test if this file exists and is readable by your process. If not, your script should display an error and exit with a return code of 1 
Configuration: Linux Suse Firefox 2.0

4 answers

  1. Rastablasta
    more 'the file name' to read a text file in bash.
    finally, for example, you also have vi, emacs, less, etc....

    good luck with your script :)
    0
    1. jisisv Moderator
      For the first part
      [johand@horus]~ $echo $SHELL
      /bin/bash
      [johand@horus]~ $echo $(basename $SHELL)
      bash

      Then use test, [ ... etc
      --

      Gates vous a donné les fenêtres.
      GNU nous a donné toute la maison. (Alexandrin)
      0
      1. $Dollar$
        I sketch a solution I'm not a pro in bash and I don't want to do your exercise :P
        place your convertisseur.sh script in the same directory as your taux.txt

        #!/bin/bash
        #converter

        function conversion () {
        let euros=$somme/$taux
        return euros
        }
        function assignrate {

        taux="more taux.txt | cut -d 'Rate :' " #selects the rate value from the taux.txt file
        if [ taux != ??]
        return 0
        }

        assignment ()
        echo "MACHINE CONVERTER BY THING"
        echo "What amount do you want to convert? (in Francs)"
        read somme

        assignment ()
        conversion (somme)

        echo "$somme"

        it must be full of errors: I don't remember how to pass parameters in a function in bash or how to check for the presence of the file... but it's always a lead ;)

        --
        omFg
        0
        1. sov^36 Contributor
          http://www-phase.c-strasbourg.fr/inform/linux/cours/user/cours.html
          http://www-phase.c-strasbourg.fr/inform/linux/cours/user/node12.html

          --
          @%$**¤!
          SPAM SPAM TROLL TROLL GODWIN POINT BANZAI !
          0