Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Using arrays outside the loop

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Using arrays outside the loop
# 1  
Old 04-07-2009
Using arrays outside the loop
set -A town_name india pakistan srilanka india
set -A town
m=0
n=0
while [ $m -lt ${#town_name[*]} ]
do
t1=`echo ${town_name[$m]}`
town[$n]= $t1
echo ${town[$n]}
n=$((n+1))
m=$((m+1))
done
t2=`echo ${town[3]}`
echo $t2


i m trying to get the value of town array outside the loop but i m nt getting it..
Could u plz help meSmilie
# 2  
Old 04-07-2009
if this is your code -- you're nuking the array in the 2nd line...
# 3  
Old 04-07-2009
Code:
set -A town_name india pakistan srilanka india
### set -A town
m=0
n=0
while [ $m -lt ${#town_name[*]} ]
do
t1=`echo ${town_name[$m]}`
town[$n]=$t1
echo ${town[$n]}
n=$((n+1))
m=$((m+1))
done
t2=`echo ${town[3]}`
echo $t2

spacing problems also.
# 4  
Old 04-07-2009
Your problem is the space after the equals sign on the line "town[$n]= $t1"

Code:
#!/bin/ksh93

set -A town_name india pakistan srilanka india
set -A town
m=0
n=0

while [ $m -lt ${#town_name[*]} ]
do
   t1=`echo ${town_name[$m]}`
   town[$n]=$t1
   echo ${town[$n]}
   n=$((n+1)) 
   m=$((m+1))
done

t2=`echo ${town[3]}`
echo $t2

You could also write the loop more compactly as
Code:
while (( m < ${#town_name[*]} ))
do
   town[$n]=${town_name[$m]}
   echo ${town[$n]}
   ((n++))
   ((m++))
done

# 5  
Old 04-08-2009
The compact code is giving error
n++ more tokens expected...
first i have tried with the same code but when this error appeared i changed the format.
# 6  
Old 04-08-2009
oops, sorry:

Code:

set -A town_name india pakistan srilanka india


m=0

while (( $m < ${#town_name[*]} ))
do
   town[$m]=${town_name[$m]}
   echo ${town[$m]}
   ((m = m + 1 ))
done

echo town=${town[3]}

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Multiple arrays in variable using for loop

Hi, I'm trying to get the number of files inside same kind of folders on each disks and assigning each values in to a variable named with same folder and disk name so that it'll be easy for me to identify each time.But somehow I'm not able to assign those values in that specific name variable... (1 Reply)
Discussion started by: ratheeshp
1 Replies

2. Shell Programming and Scripting

Loop over multiple arrays

Hi All I need really really help with this :- I have two files ( File1 , File 2) both files are output of two different scripts. File1 usually has a list of names ( sometimes 3 names sometimes 5 sometimes more , depends about the output of the script) File2 usually has a list of numbers... (2 Replies)
Discussion started by: samsan
2 Replies

3. Shell Programming and Scripting

Bash for loop with arrays second variable?

I am fairly new to bash and am not sure how to resolve this: I have a series of geographical long/lat points eg. 50/-30 listed on separate lines in a file called junk2. I have input these into an array and am then using that array in a for loop. Towards the end of the loop I create a file called... (4 Replies)
Discussion started by: lily-anne
4 Replies

4. Shell Programming and Scripting

Loop through array of arrays of string with spaces

Hi I'm trying to loop through an array that contains other arrays and these arrays consist of strings with spaces. The problem is that I can't seem to preserve the spacing in the string. The string with spaces are either divided into multiple items if I change IFS to \n or all the elements of... (4 Replies)
Discussion started by: kidmanos
4 Replies

5. Shell Programming and Scripting

Problem with arrays and loop

Hello , im sorry for my english . im trying to create a dynamic menu that will display if the interface is ACTIVE OR STOPPED/FAILED for some reason i cant get it to work properly start_interface_func() { i=0 for interface_chk in 11 71 73 72 12 47 48 49 50 20 23 24 25 46 21 22 27 28... (5 Replies)
Discussion started by: visiown
5 Replies

6. Shell Programming and Scripting

Iterating through two arrays in a single loop

Hey everyone. Is it possible to use two arrays in a loop? Basically what I am trying to do is iterate through the elements in an array, and, based on a condition, use the current position in the array to point to that index in the array. Here's the loop structure I'm looking for: ... (1 Reply)
Discussion started by: msarro
1 Replies

7. Shell Programming and Scripting

does bash have arrays that i can push into and run a for loop against?

Hi I have a bash script where i need to push some values into an array and when finished, run a for loop against that array for example myfile sausages|meat beef| meat carrot| veg ... ... for LINE in `cat myfile`; do FOOD=`echo $LINE | cut -d\| -f1` TYPE=`echo $LINE | cut... (4 Replies)
Discussion started by: rethink
4 Replies

8. Programming

Perl arrays and loop through array

Hi All I need to get <STDIN> from a user. the <STDIN> is a range of number delimited by "," (comma) and can be with range delimited by "-". Example: 1,2,3,4-9,12,15,34-36,70 Now I need to get this from the user and go on each number and "Do something"... but when trying to do this as above... (2 Replies)
Discussion started by: RedGrinGo
2 Replies

9. Shell Programming and Scripting

How to access the elements of two arrays with a single loop using the inbuilt index.

Hi all, I wanted to access two arrays (of same size) using one for loop. Ex: #!/bin/bash declare -a num declare -a words num=(1 2 3 4 5 6 7) words=(one two three four five six seven) for num in ${num} do echo ":$num: :${words}:" done Required Output: :1: :one: (11 Replies)
Discussion started by: 14341
11 Replies

10. Shell Programming and Scripting

Nested Loop to Echo Multiple Arrays

I have three arrays which hold three elements each. I have a fourth array which contains the names of those three arrays. I'm having difficulty creating a nested loop that can loop through each array and echo their values. script #!/bin/ksh # array of locations (usa, london, australia)... (1 Reply)
Discussion started by: yongho
1 Replies
Login or Register to Ask a Question