variable intialization


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting variable intialization
# 1  
Old 10-29-2009
variable intialization

I have one file that contain some file path in multiple line.Number of line is not constant.I want to store this multiple path into variables so that i can use this path for later use

file that store path contain multiple line in this way:
line1
line2
line3
.
.
.

i want to store this line into variable in this way

var1=line1
var2=line2
var3=line3
.
.
.
Please tell how I can do that.

Note: that number of line and number of variable is not fixed. I also want to print this variable to confirm their initializations.

Thanks in advance.
# 2  
Old 10-29-2009

Code:
n=1
while read val
do
  eval "var$n=\$val"
  n=$(( $n + 1 ))
done < "$file"

# 3  
Old 10-29-2009
something like this :

Code:
cou=1
for i in `cat file_name.txt`
do
a[cou]=$i
cou=`expr $cou + 1`
done

# 4  
Old 10-29-2009
Thanks for prompt reply

Pranyam

Thanks for your reply.How to print the array value because i am printing the array value just to confirm initialization.I am doing in this way

echo "$cou: ${a[$cou]}"

but output will be
2:
3:
4:
# 5  
Old 10-29-2009
The while loop is more efficient then the for loop with cat (UUC) and it prevents problems with spaces:

Code:
c=1
while read i
do
  a[$c]="$i"
  echo ${a[$c]}
  c=$(( $c + 1 ))
done < file_name.txt

# 6  
Old 10-29-2009
Thanks Franklin.It works.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Passing variable as input & storing output in other variable

I have a below syntax its working fine... var12=$(ps -ef | grep apache | awk '{print $2,$4}') Im getting expected output as below: printf "%b\n" "${VAR12}" dell 123 dell 456 dell 457 Now I wrote a while loop.. the output of VAR12 should be passed as input parameters to while loop and results... (5 Replies)
Discussion started by: sam@sam
5 Replies

2. Shell Programming and Scripting

[Solved] How to increment and add variable length numbers to a variable in a loop?

Hi All, I have a file which has hundred of records with fixed number of fields. In each record there is set of 8 characters which represent the duration of that activity. I want to sum up the duration present in all the records for a report. The problem is the duration changes per record so I... (5 Replies)
Discussion started by: danish0909
5 Replies

3. Red Hat

How to pass value of pwd as variable in SED to replace variable in a script file

Hi all, Hereby wish to have your advise for below: Main concept is I intend to get current directory of my script file. This script file will be copied to /etc/init.d. A string in this copy will be replaced with current directory value. Below is original script file: ... (6 Replies)
Discussion started by: cielle
6 Replies

4. Shell Programming and Scripting

Variable not found error for a variable which is returned from stored procedure

can anyone please help me with this: i have written a shell script and a stored procedure which has one OUT parameter. now i want to use that out parameter as an input to the unix script but i am getting an error as variable not found. below are the unix scripts and stored procedure... ... (4 Replies)
Discussion started by: swap21783
4 Replies

5. Shell Programming and Scripting

Not able to store command inside a shell variable, and run the variable

Hi, I am trying to do the following thing var='date' $var Above command substitutes date for and in turn runs the date command and i am getting the todays date value. I am trying to do the same thing as following, but facing some problems, unique_host_pro="sed -e ' /#/d'... (3 Replies)
Discussion started by: gvinayagam
3 Replies

6. Shell Programming and Scripting

assign awk's variable to shell script's variable?

Dear All, we have a command output which looks like : Total 200 queues in 30000 Kbytes and we're going to get "200" and "30000" for further process. currently, i'm using : numA=echo $OUTPUT | awk '{print $2}' numB=echo $OUTPUT | awk '{print $5}' my question is : can I use just one... (4 Replies)
Discussion started by: tiger2000
4 Replies

7. Shell Programming and Scripting

Split variable length and variable format CSV file

Dear all, I have basic knowledge of Unix script and her I am trying to process variable length and variable format CSV file. The file length will depend on the numbers of Earnings/Deductions/Direct Deposits. And The format will depend on whether it is Earnings/Deductions or Direct Deposits... (2 Replies)
Discussion started by: chechun
2 Replies

8. Shell Programming and Scripting

How to define a variable with variable definition is stored in a variable?

Hi all, I have a variable say var1 (output from somewhere, which I can't change)which store something like this: echo $var1 name=fred age=25 address="123 abc" password=pass1234 how can I make the variable $name, $age, $address and $password contain the info? I mean do this in a... (1 Reply)
Discussion started by: freddy1228
1 Replies

9. Shell Programming and Scripting

Insert a line including Variable & Carriage Return / sed command as Variable

I want to instert Category:XXXXX into the 2. line something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong: sed "2i\\${n}Category:$cat\n" Sample: Titel Blahh Blahh abllk sdhsd sjdhf Blahh Blah Blahh Blahh Should look like... (2 Replies)
Discussion started by: lowmaster
2 Replies

10. Shell Programming and Scripting

Sed variable substitution when variable constructed of a directory path

Hello, i have another sed question.. I'm trying to do variable substition with sed and i'm running into a problem. my var1 is a string constructed like this: filename1 filerev1 filepath1 my var2 is another string constructed like this: filename2 filerev2 filepath2 when i do... (2 Replies)
Discussion started by: alrinno
2 Replies
Login or Register to Ask a Question