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Bash exercise

orque Posted messages 17 Registration date   Status Member Last intervention   -  
sov^36 Posted messages 3624 Registration date   Status Contributor Last intervention   -
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 Posted messages 64 Status Member 56
     
    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
  2. jisisv Posted messages 3678 Status Moderator 936
     
    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
  3. $Dollar$ Posted messages 11 Status Member 1
     
    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
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  4. sov^36 Posted messages 3624 Registration date   Status Contributor Last intervention   717
     
    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