Help fixing my database script Post: 302867163

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Homework and Emergencies Homework & Coursework Questions Help fixing my database script Post 302867163 by gamernerd101 on Wednesday 23rd of October 2013 02:35:59 PM

10-23-2013

Registered User

Help fixing my database script

1. The problem statement, all variables and given/known data:
I need help I get a variant of syntax errors when compiling my script to maintain a database. It's a simple database meant to create/view/maintain vehicles.

2. Relevant commands, code, scripts, algorithms:
my if statements have many syntax errors and I'm lost as to why. One key lines is line 8 my first if statement. Thanks in advance.

3. The attempts at a solution (include all code and scripts):

Code:

#! /bin/bash
# Automobile database

db=arg1
command=arg2
case $db in
    #create:
if [ -f "$db" ]; then
echo "DATABASE EXSISTS"

 if [ $arg3 != "" ]
 echo $arg3 > db

else
echo "Automobile Database" > db
echo "New database created"
fi
  esac

#add

read -p "Make of the car: " make

read -p "Model of the car: " model

read -p "Year of the car: " year

read -p "Color of the car: " color


if $year < 1870 || $year > 2020
echo "Error with $year"
fi
echo "$make, $model, $year, $color" >> db
echo "Successfully added a record to the database"

case $arg3:
 max=$( wc -l db )
 #all:
 cat db

 if $arg4 > $max
 echo "Error"
 fi
 sed -ne "1p;arg4p" db

#range:
if $arg4 > $max || $arg5 > $max || $arg4 > $arg5
error
fi
sed -ne "1p;arg4,arg5p" $db
esac



#delete:
        case $arg3:
        max=$( wc -l db )
      sed -ie '2,$d' db
     single:
     if $arg4 > $max
     echo "error"
     fi

     sed -ie "$arg4d" db


     range:
     if $arg4 > $max || $arg5 > $max || $arg4 > $arg5
           echo "Error"
           fi
     sed -ie "arg4,arg5d" db
esac

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
NIU, dekalb il USA, Ege, CSCI 330

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

gamernerd101

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shevek_ristring

shevek::ristring(3)					     Library Functions Manual					       shevek::ristring(3)

NAME

       shevek::ristring -

       shevek::ristring is identical to shevek::istring, but it uses std::string instead of Glib::ustring.

SYNOPSIS

       #include <iostring.hh>

   Public Member Functions
       ristring ()
	   Create a new istring with no data.
       ristring (std::string const &str)
	   Create a new istring with data.
       void init (std::string const &str)
	   Set new data to an existing istring.
       void push ()
	   Push the current position to the stack so it can be restored later.
       int pop (bool keep=false)
	   Pop the last pushed position from the stack.
       void reset ()
	   Set the current position to 0, but don't change the stack.
       std::string rest () const
	   Get remaining string.
       void skip (std::string::size_type p)
	   Skip some characters.
       bool operator() (std::string const &format)
	   Read a constant string from the input.
       template<typename T1 > bool operator() (std::string const &format, T1 &arg1)
	   Read a string containing one argument from the input.
       template<typename T1 , typename T2 > bool operator() (std::string const &format, T1 &arg1, T2 &arg2)
	   Read a string containing two arguments from the input.
       template<typename T1 , typename T2 , typename T3 > bool operator() (std::string const &format, T1 &arg1, T2 &arg2, T3 &arg3)
	   Read a string containing three arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 > bool operator() (std::string const &format, T1 &arg1, T2 &arg2, T3 &arg3,
	   T4 &arg4)
	   Read a string containing four arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 , typename T5 > bool operator() (std::string const &format, T1 &arg1, T2
	   &arg2, T3 &arg3, T4 &arg4, T5 &arg5)
	   Read a string containing five arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 > bool operator() (std::string const &format, T1
	   &arg1, T2 &arg2, T3 &arg3, T4 &arg4, T5 &arg5, T6 &arg6)
	   Read a string containing six arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 > bool operator() (std::string
	   const &format, T1 &arg1, T2 &arg2, T3 &arg3, T4 &arg4, T5 &arg5, T6 &arg6, T7 &arg7)
	   Read a string containing seven arguments from the input.
       template<typename T1 , typename T2 , typename T3 , typename T4 , typename T5 , typename T6 , typename T7 , typename T8 > bool operator()
	   (std::string const &format, T1 &arg1, T2 &arg2, T3 &arg3, T4 &arg4, T5 &arg5, T6 &arg6, T7 &arg7, T8 &arg8)
	   Read a string containing eight arguments from the input.

   Static Public Member Functions
       template<typename T > static T direct (std::string const &data, std::string const &format, T def=T())
	   Read a variable from given data and return it.

Detailed Description
       shevek::ristring is identical to shevek::istring, but it uses std::string instead of Glib::ustring.

Member Function Documentation
   template<typename T > static T shevek::ristring::direct (std::string const &data, std::string const &format, Tdef = T ()) [inline, static]
       Read a variable from given data and return it. This allows using a shevek::istring in an expression without the need to create a new
       variable for it. If the input doesn't match the format, def is returned.

   int shevek::ristring::pop (boolkeep = false)
       Pop the last pushed position from the stack. If keep is true or not given, the current position is restored to the last position. If it is
       false, the current position is not changed.

Author
       Generated automatically by Doxygen for libshevek from the source code.

libshevek							  Fri May 11 2012					       shevek::ristring(3)