1. UNIX for Dummies Questions & Answers

Hi! Is there is any way to divide the screen when I use UNIX shells (I have RedHat 7.1)? I have to see the command promt and process some data from very long file at the same time (I work with PThreads). Some "pseudo-windows" in text mode, huh? =) Thanks in advance and don't be angry =) (4 Replies)

2. Programming

Hi .. I have a file which contains a list of numbers like.. 1923,1924,1925,1926,1927,1928,1929,1930,1931,1932,2015,2016,2017,2018,2019,2020,2021,2022,2023,2024,2025,2026,2027, 2028,2029,2030,2031,2032,2115,2116,2117,2118,2119,2120,2121,2122,2123,2124,2125,2126,2127,2128,2129,2130,2131,2132,... (2 Replies)

3. UNIX for Dummies Questions & Answers

Hi I know its a dumb question but can any one please explain me the difference of executing a shell script in the following 2 ways. . script.sh sh script.sh I have a problem if I execute the following code as sh script.sh DB_CNT_ALW=0.20 SCT_VAR=0.05 if ; then echo "== Difference... (3 Replies)

4. UNIX for Dummies Questions & Answers

Hi! Is there an easy way (maybe using awk??) to divide the values of one column of the file by it's first entry.. If I have a column: 3 4 5 6 7 I would like to divide it by 3. I want to do this for more than 100 files, so it wouldn't be practical to open file by file and... (26 Replies)

5. Shell Programming and Scripting

Hi, I have a file containing 28048 lines and I would like to split it into a a file with 3506 lines and 8 columns? In column 1, I would like to have the first 3506 lines, in columns 2 the second 3506 lines and so on. I've been looking around in the forum but I found very specific cases. Is... (1 Reply)

6. Shell Programming and Scripting

Hi, I do have a very simple task to divide 2 variables and display the result. I CANNOT use bc when i try var1=2 var2=4 var3=$(($var1 / $var2)) echo $var3 the output is always 0 What can I change to get a dotted decimal result such as 0.5 ? Thanks! (5 Replies)

7. Shell Programming and Scripting

Hi, I have written this code the division of two numbers and multiply it by hundred (to get the percent) echo "script running for the 1st time" cp value_directory_present.txt /home/mysql_cnbc/value_directory_past.txt rm -f test6.txt value_directory_present.txt else y1=`awk '{print $1}'... (5 Replies)

8. Shell Programming and Scripting

Hello, I am using Awk in UBUNTU 12.04. I have a file as follows, the first column represents the name of populations, in my real file, I have 47 populations and 2172 lines in total with about 47000 fields. ABO_1 1 2 ABO_1 1 2 ABO_2 1 1 GPO_1 1 1 GPO_1 2 2 GPO_2 1 0 GPO_2 2 0 I want... (3 Replies)

9. Shell Programming and Scripting

Does anyone know how to include as a script maybe an "echo" warning that explains that if a user uses the second number "zero" when dividing, that the result will BE "zero." I need, example: 5/0 (second number) = 0, in script form. current script: echo "Enter a number" read num1 echo... (4 Replies)

10. Shell Programming and Scripting

Hi! I have a file as below: 0.000145 5.82056e-08 0.000146 6.82088e-08 0.000150 7.42115e-08 0.000156 8.52142e-08 0.000176 8.82169e-08 0.000178 9.82197e-08 I'd like to divide the values of the second column by its last entry (here 9.82197e-08). I would be thankful if someone could... (6 Replies)