Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Increments in a loop

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Increments in a loop
# 1  
Old 10-26-2010
Increments in a loop
Hi All,
I am trying to implement a for loop in a .sh file and execute it.
My for loop is

Code:
for i in 1, 200, 400, 600, 800, 1000, 1200,......100000
do
...
..
..
done

As you could see there is an increment of 200 in each for loop until it reaches 100,000
Instead of specifying all the values is there a way to shorten it
I tried
for i in {1..100,000,200}
it didn't work.
please let me know.

LA
# 2  
Old 10-26-2010
Code:
for i in 1 $(seq 200 200 10000)
do
  echo $i
done

Note that your first step is 199, not 200 so need to be specified separately.
This User Gave Thanks to jlliagre For This Post:
michaelrozar17
# 3  
Old 10-26-2010
OMG who needs such a goofy loop Smilie LoL
# 4  
Old 10-27-2010
Sorry it didn't work
# 5  
Old 10-27-2010
What shell and operating system are you using ?
# 6  
Old 10-27-2010
#!/bin/bash and Mac OS
# 7  
Old 10-27-2010
Code:
i=0
while [ $i -lt 100000 ]
do 
    let i+=200 # increase value 
    echo $i     # do something here
done

This User Gave Thanks to danmero For This Post:
Lucky Ali
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

Celisus & fahrenheit table converter with fields + increments

no longer needed, please delete thread. (0 Replies)
Discussion started by: xtina
0 Replies

2. Shell Programming and Scripting

awk loop using array:wish to store array values from loop for use outside loop

Here's my code: awk -F '' 'NR==FNR { if (/time/ && $5>10) A=$2" "$3":"$4":"($5-01) else if (/time/ && $5<01) A=$2" "$3":"$4-01":"(59-$5) else if (/time/ && $5<=10) A=$2" "$3":"$4":0"($5-01) else if (/close/) { B=0 n1=n2; ... (2 Replies)
Discussion started by: klane
2 Replies

3. Shell Programming and Scripting

Reset while loop to loop same file multiple times

Hi, I want to read file multiple times. Right now i am using while loop but that is not working. ex. While read line do while read line2 do echo stmt1 #processing some data based on data., done < file2.txt done < file1.txt # This will have 10... (4 Replies)
Discussion started by: tmalik79
4 Replies

4. Shell Programming and Scripting

Array Variable being Assigned Values in Loop, But Gone when Loop Completes???

Hello All, Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....? I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping through a string containing some of these "Illegal Characters". Now... (5 Replies)
Discussion started by: mrm5102
5 Replies

5. Shell Programming and Scripting

Averaging in increments using awk & head/tail

Hi, I only have a very limited understanding and experience with writing code and I was hoping I could get some help. I have a dataset of two columns (txt format, numbers in each row separated by a tab) Eg. 1 5 2 5 3 6 4 7 5 6 6 6 7 ... (5 Replies)
Discussion started by: Emred_Skye
5 Replies

6. Shell Programming and Scripting

Null Handling in Until loop. . .loop won't stop

Hi Im running this script, which is supposed to find the max value build some tables and then stop running once all the tables are built. Thing is , it keeps assigning a null value to $h and then $g is null so it keep building tables i.e. testupdateNUL. How can I stop this? Here is what I have: ... (4 Replies)
Discussion started by: brandono66
4 Replies

7. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

8. UNIX for Dummies Questions & Answers

Want to process file in 1000 record increments

I have a file that varies in the # of records. I want to read 1000 records, do something, read the next 1000 records, do something, going in 1000 increment chunks, and then finish up with whatever is left over at end of file. (1 Reply)
Discussion started by: Tsamp
1 Replies

9. Programming

ip address octet increments

Hi all, Situation is as below. I would get an IP address and port from eithe r a file or command line. It probably would be as char * or string. So was wondering how I could accept this and increment the last octets? Incrementing the port is fine. I could get that into an integer by atoi()... (8 Replies)
Discussion started by: Naanu
8 Replies

10. Shell Programming and Scripting

Working with field increments

I have a new challenge that I need some help with. Each morning I have two files that contain working units and failed units that I join together to form file3 which is FTP to server for comparison against billing system. My problem, I would like to take joined data in file3 and add a field... (2 Replies)
Discussion started by: greengrass
2 Replies
Login or Register to Ask a Question