Hello ... Friends today we are going to discus about Arrays in the shell scripting. like other programming language Arrays also having an important role in shell too.
so basically in shell the array is only one dimensional. & Ist element start with value [0] , not with [1] , it follows the same rule as C Language.
How to assign Array : there are mainly thee ways of assigning Array in shell
1. one at a time
2. all at once
3. by index
so now let's understand how to assign them in given ways
one at a Time : by this method we can assign array & values like as we define variables one at a time.
like :
numberarray [0]=zero
numberarray [1]=one
numberarray [2]=two
numberarray [3]=three
we can also define it as
numberarray [0]=zero
numberarray [1]=one
numberarray [3]=three
here we miss the value or array numberarray [2]=two
& we also can use space in values
if we have two part of values then we can add space too but need quote like
country [0]= India
country [1]= "United Kingdom"
country [2]= Canada
country [3]= "United State of America"
this is one dimensional Array
All at Once : we can also assign arrays in a single list by just separating values by space
team = ( Rabbit DeadMan Parth IHacker NullPort )
as we can see it is much more different then "One at a time" assign array we have some limitations in All at Once array like :
1. We do not use spaces between them if we have space then it will assign for other array
2. we have to know the value of arrays too
By Index :
By Index type array we need to provide the name of the variable every time.
example : nonprinting= ( [0]=NULL [1]=SOH [2]=STX [3]=ETX [4]=EOT ..........[15]=US) this is by Index array type.
thnx friends , Hope you like it & i will try to make it so easy that every one can understand this all & tiring to increase the complexity slowly . Thnx again :)
so basically in shell the array is only one dimensional. & Ist element start with value [0] , not with [1] , it follows the same rule as C Language.
How to assign Array : there are mainly thee ways of assigning Array in shell
1. one at a time
2. all at once
3. by index
so now let's understand how to assign them in given ways
one at a Time : by this method we can assign array & values like as we define variables one at a time.
like :
numberarray [0]=zero
numberarray [1]=one
numberarray [2]=two
numberarray [3]=three
we can also define it as
numberarray [0]=zero
numberarray [1]=one
numberarray [3]=three
here we miss the value or array numberarray [2]=two
& we also can use space in values
if we have two part of values then we can add space too but need quote like
country [0]= India
country [1]= "United Kingdom"
country [2]= Canada
country [3]= "United State of America"
this is one dimensional Array
All at Once : we can also assign arrays in a single list by just separating values by space
team = ( Rabbit DeadMan Parth IHacker NullPort )
as we can see it is much more different then "One at a time" assign array we have some limitations in All at Once array like :
1. We do not use spaces between them if we have space then it will assign for other array
2. we have to know the value of arrays too
By Index :
By Index type array we need to provide the name of the variable every time.
example : nonprinting= ( [0]=NULL [1]=SOH [2]=STX [3]=ETX [4]=EOT ..........[15]=US) this is by Index array type.
thnx friends , Hope you like it & i will try to make it so easy that every one can understand this all & tiring to increase the complexity slowly . Thnx again :)
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