1. Shell Programming and Scripting

I'm new at scripting but I thought I was getting pretty good at it. I've hit a snag. I try to use expr to compute a fraction say: expr 3 / 4, and I'm getting zero. I guess it's just truncating to the integer, in this case 0, but I need the decimal 0.75. What can I do to compute this value in... (2 Replies)

2. 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)

3. Shell Programming and Scripting

hi all, was wondering if there is another way to do calculations in ksh scripts other than using bc ?? i am using a script to calculate average response time and my script errors out after running for a bit. e.g code i am using : averageTime=$(print "$totalTime / $numberOfEntries" |... (2 Replies)

4. 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)

5. UNIX for Dummies Questions & Answers

I need to be able to use the current date and calculate 7 days ago to be stored in another variable to be passed to a file in my Unix shell script. I need the date in the following format: date '+%m/%d/%Y' or 05/16/2006 How do I calculate date minus 7 days or 1 week ago? (8 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

Hello, I have to turn: Apple Inc.:325,64:329,57 into Apple Inc.:325,64:329,57:3,93 3,93=329,57-325,64. My code: cat beurs.txt | sed 's/\(*\):\(*\),*\(*\):\(*\),\(*\)/\4\.\5-\2\.\3/' beurs.txt | bc| tr '.' ',' | sed 's/^-*,/0,/' > winstmarges.txt; paste -d: beurs.txt winstmarges.txt; rm... (5 Replies)

8. Shell Programming and Scripting

grep Quality abc.txt | awk -F"=" '{print $2}' o/p is given as 70/70 49/70 I want in the below format (percentage format) 100% 70% help me!!!!:confused::confused::confused: ---------- Post updated at 09:59 AM ---------- Previous update was at 09:57 AM ---------- Cell 01 -... (3 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. UNIX for Beginners Questions & Answers

Hello. I'm writing an awk script that looks at a .csv file and calculates the weighted grade for each student based on the scores and categories in the file. I am able to get the script to run the only issue however is that the same score for each student is the same. I'm self-teaching myself the... (1 Reply)