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Read command

 
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# 1  
Old 05-17-2010
Read command
Hi everyone,

I have problem while writing a shell script for linux (Red Hat).

First I need to create a read command. I tried to google this but so far I can't sort this out. I hope you will be able to help me.

I have to read a file like this :

GESTION_DATA_SET_variable1_variable2

Variable1 could only be : ELS or IMA or NPI or NPD

variable2 could only be : 0 or 1 or 2

so I am writing step by step a script do to different things but fisrt the script should read the file wanted.

Code:
#!/bin/bash

# INSTRUMENT

instrument_name=$4
if [ "$instrument_name" == "" ]
then
   echo "Instrument Name (usage ELS ; IMA ; NPI ; NPD) : \c"
   read instrument_name
fi

# PHASE

phase_name=$5
if [ "$phase_name" == "" ]
then
   echo "phase name is numeric value (usage 0 ; 1 ; 2) : \c"
   read phase_name
fi


#------------------------------------------------------
# fonction

jboss () {
        rdate=$(cat GESTION_DATA_SET_${4}_${5} | awk '{printf "%s\n" ,$2"_"$3}')
        echo ${rdate}

}

#------------------------------------------------------

jboss

sleep 2

exit

so far the script is unable to complete the file name correctly as the output screen shows error that No such file or directory : GESTION_DATA_SET__

I hope you will be able to help a such dummies : )
# 2  
Old 05-17-2010
Insted of $4 and $5 use "$instrument_name" and "$phase_name".

i.e :

Code:
rdate=$(cat GESTION_DATA_SET_${instrument_name}_${phase_name} | awk '{printf "%s\n" ,$2"_"$3}')


Smilie
# 3  
Old 05-17-2010
Dear Reboot,

thanks for your help. here is what I have done. So far this work.

Please note I made a mistake, the script have to be in ksh.

Code:
#!/bin/ksh


#  instruments
liste_instruments[1]="ELS"
liste_instruments[2]="IMA"
liste_instruments[3]="NPI"
liste_instruments[4]="NPD"

#  phase
liste_phase[1]="0"
liste_phase[2]="1"
liste_phase[3]="2"
liste_phase[4]="3"


# INSTRUMENT

if [ "$id_instrument" == "" ]
then
   echo "id_instrument (usage ELS ; IMA ; NPI ; NPD) : \c"
   read id_instrument
fi

# PHASE

if [ "$id_phase" == "" ]
then
   echo "phase name is numeric value (usage 0 ; 1 ; 2 ; 3) : \c"
   read id_phase
fi

############################################################################
fct_verif_inst ()
{
#
# Check Instrument
#
i=1
while [ $i -lt 5 ]
do
  if [ $id_instrument = ${liste_instruments[$i]} ]
  then
    break
  else
    let i=$i+1
  fi
done
if [ $i -eq 5 ]
  then
  echo "   instrument \""$id_instrument"\" not valid (ELS, IMA, NPI ou NPD)"
  echo " "
  fct_usage
fi
}

echo "      Instrument  : "$id_instrument

############################################################################
fct_verif_phs ()
{
#
# Phase mission
#
i=1
while [ $i -lt 5 ]
do
  if [ $id_phase = ${liste_phase[$i]} ]
  then
    break
  else
    let i=$i+1
  fi
done
if [ $i -eq 5 ]
  then
  echo "   Phase mission \""$id_phase"\" not valid (0, 1, 2)"
  echo " "
  fct_usage
fi
}

echo "      Phase de la mission  : "$id_phase




############################################################################

        rdate=$(cat GESTION_DATA_SET_${id_instrument}_${id_phase} | awk '{printf "%s\n" ,$2"_"$3}')
        echo ${rdate}


#------------------------------------------------------



sleep 2

exit

 
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