1. UNIX for Dummies Questions & Answers

I'm trying to have a loop print out statistics every X number of seconds. How can I add a specific number of seconds to a time variable and make a comparison? Thanks ahead of time. For example: startTime = `date +%H%M%S` currentTime = $startTime executeTime = startTime + X # X is equal... (5 Replies)

2. Shell Programming and Scripting

hi i have a script that is taking the difference of multiple columns in a file from a value from a single row..so far i have a loop to do that.. all the data is floating point..fin has the difference between array1 and array2..array1 has 700 x 300= 210000 values and array2 has 700 values.. ... (11 Replies)

3. Shell Programming and Scripting

HI i have following problem, i need to use split command to split files each should be cca 700 lines but i dont know how to inplement it in the scripts becasuse each time the origin file will be various size , any body got any idea cheers (2 Replies)

4. Shell Programming and Scripting

Hi guys, I need for the bash code below a little bit help: cat script.sh #!/bin/bash 5_MYVALUE="test" echo "$5_MYVALUE" If I try to run the script, got follow failure: ./script.sh ./script.sh: line 4: 5_MYVALUE=test: command not found _MYVALUE My questions are how... (4 Replies)

5. Shell Programming and Scripting

How to convert string into an integer or number For example : % set tim = `date` % echo $tim Tue Feb 22 16:25:08 IST 2011 here How to increment time by 10 hrs like 16+10 , here 16 is a string in date cmd. .. how to convert 16 to an integer and added to a another nimber ? Thanks... (3 Replies)

6. Shell Programming and Scripting

Hi, I have data in the following form: AB001 10 AB002 9 AB003 9 etc AB200 5 What I need to do is sum up the second value according to groups of the first, i.e. AB001 to AB030 the total being X, AB031 to AB050 the total being Y etc (there are 5 AB ranges of different sizes). I'm sure... (3 Replies)

7. UNIX for Dummies Questions & Answers

i need to do camparisions like the below. For the case when first=10 and second=9.9 the scripts displays process failed. I need to be able to convert the values to integer before doing the comparision. Like 9.9 should be rounded over to 10 before doing comparision. Please advice how can... (3 Replies)

8. Shell Programming and Scripting

hi, how to I do this? i="4.000" if ; then echo "smaller" fi how do I convert the "4.000" to 4? Thanks! (4 Replies)

9. Shell Programming and Scripting

I have 2 numbers xmin = 0.369000018 xmax = 0.569000006 and want to calculate (xmax- xmin) / 5.0 I have tried using $(( )) but is always giving an error (8 Replies)

10. Shell Programming and Scripting

Hi, I am new to shell/bash script. I am trying to run below script #!/bin/bash a=0 b=10 if then echo "a is equal to be" else echo "a is not equal to be" fi MAX=10 while do echo $a a='expr $a + 1' done (1 Reply)