Programming :: Extract 2 Numbers From A Same File?

Dec 22, 2010

I am trying to extract 2 numbers from a same file and my goal is to print them both in another file, on the same line, separated with a space. I have to do that for 20 files and I would like to have therefore 20 lines like this in the output file. It would look like this :


number1_file1 number2_file1
number1_file2 number2_file2
number_1_file20 number2_file20

So far, I did only extract one number and got an output file like this :



And I did this by running a bash script with the following content :


ls execution$1$2*.* | while read filename
cat $filename | grep -e "Total aborts:" | cut -d " " -f3 >> abort$1$2.dat

$1 and $2 are just strings to identify the different files I want to consider in this loop. This script works well to extract a number which is the 3rd field of a line starting with "Total aborts:".Now, how could I change this script to do what I mentioned above (i.e. extracting two numbers from two different lines) ? The second number is the 3rd field of a line starting with "Total throughput:"

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General :: Parsing Columns In Bash / Extract The First Set Of Numbers And Get Them To Appear Only Once?

Sep 28, 2009

as a result of a find command, i have

852065 72: /bin/gunzip
852065 72: /bin/gzip
852065 72: /bin/zcat

(the first column is inode number and the second is size if you're curious)

I want to be able to format it in a way such that:
852065 72:

I know I can get the bottom half using awk- but I can't figure out how to extract the first set of numbers and get them to appear only once

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Programming :: Read A File That Counts Each Line And Numbers

May 13, 2010

I ran into it while google Segmentation Fault. I'm writing a simple C program that reads a file that counts each line and numbers it then writes to a file called sdout. I copyed my program mostly from the text book but im still having problems. Heres my code:

#include <stdio.h>
#include <stdlib.h>
void new_line(FILE *, FILE *);
int main(char *argv)


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Programming :: Extract Part Of File Name?

Mar 26, 2010

I have this string ./DAT000728-652523058.job.I want to extract the no between DAT and - sign. I want 728. I dont want 000728.echo ./DAT000725-560162365.job | cut -d'T' -f2 | cut -d'-' -f1 I am getting 000728.string can be ./DAT326822-652523058.job also. then i need 326822

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Programming :: Use Awk And Sed To Extract Height And Width Of File

Aug 3, 2010

I am trying to write commands that extracts the height and width of a video file via ffmpeg. I have the following working so far:

This gives the following answer in widthxheight format with an extra , 720x480,

How can I instead run 2 separate commands that give me height and width separately? I want some command to give me 720 and another command to give me 480 and I dont need the x or the ,

If you need to know this is what ffmpeg -i 2>&1 gives as output

Seems stream 0 codec frame rate differs from container frame rate:

At least one output file must be specified

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Programming :: Extract Specific Lines From A Flat File?

Mar 10, 2011

I'm trying to extract specific lines from a flat file. I need lines that fall within a range of coordinates. The -F can be either ! or = If the line is in this set range I need all of the data on that line. ranges lat 36 to 39 and longitude -74 to -84

awk -F '=' '{lat=substr($2,1,2); lon=substr($2,10,3); (lat >36 && lat <39) && (lon >-74 && lon <-84); print lat"--"lon}' < net.log

example line from the flat file
K4MQF-3>APN383,VA2-2,qAR,N3HF-5:!3818.65NS07800.17W#PHG77306/W3,VA3/Clarke Mnt

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Programming :: Extract Extra Packages In A Separate File?

Mar 6, 2009

I have two files containing list of packages using


dpkg --get-selections > file-name


Now I would like to create a third file which contains only those packages which are present in package-a.txt but NOT in package-b.txt. The file should look like this:



Note: The world "install" is also to be removed for all packages. Using diff command I could get something like this:


temp# diff -yb package-a.txt package-b.txt | grep "<"
package2 install <
package4 install <

But not sure how to remove instances of "install" and "<".

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Programming :: Create Inverted Files To Associate Files To Numbers ( Numbers Being The Index Of My Paths )?

Apr 4, 2011

am writing a small search program for my class. I have decided to use indexing for my program. Ive researched online about indexing and how search engines do it. If im gonno do that I need to create inverted files to associate files to numbers ( numbers being the index of my paths ) . Now I was wondering what would be the best way to create an inverted file ? I was going to create sql tables using mysql api in C but then again there is no array data type or vectors to store few numbers in a single column in mysql and it is not advised to use Enum or SET

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Programming :: Extract A Part Of Flat File In Shell Script?

Feb 12, 2010

My rquirement is I have a flat file with lot of lines on it.example:



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Ubuntu :: PCMan File Manager File/folder Numbers In Wrong Order?

Jul 25, 2011

I have recently switched to using LXDE on my PC and I am on the whole pretty pleased with it. However,PCMan is giving me a really odd problem. Some of the files/folders are being displayed in the wrong order where they contain numbers. They are being ordered by their first digit not the whole number.


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Programming :: Get A Number Between Two Numbers?

Feb 1, 2010

I have some code that opens a directory and reads in the names of files which are e.g. 0001, 0002, 0003 up to 9999I need to get all these numbers and then generate a new number that is not one of these numbers is my code to check the files in the directory

DIR *d;
struct dirent *dir;
int i = 0;


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Programming :: Sum The Numbers Between And Including A And B?

Feb 11, 2010

write a script in bash or shell to add the numbers between and including two numbers

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Programming :: Perl - Interpreter For Fib Numbers

Apr 1, 2010

As some of you know that I am new to this forum. I have another problem that I got stuck on. I have this file called "Fib.rbb" and my instructor told us to write an interpreter program by using Fib.rbb.

"You are to write an interpreter in Perl for Rongs Basic Basic (RBB) as explained in class. The BNF description for RBB and a test file called Fib.rbb are part of the file which is available in the Course Documents folder on blackboard. If you call your interpreter, you would execute the program via perl Fib.rbb

Code: Print "A few Fibonacci numbers:"

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Programming :: Code To Add 5 Numbers In Assembly?

Mar 28, 2011

Looking for code to add 5 numbers in assembly? I want to use array for input of those 5 numbers. No problem if the output is 1 digit(0....9).

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Programming :: Date Subtraction Using Numbers

Nov 15, 2010

I want the get the date of the oldest log in this directory and compare it with current date.Time of the each log can be seen before ".Z" prefix.I have written the following piece of code. However, it is not working for the following case:

TODAY= 20101201

Difference is 72, which is not correct, since these are dates.

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Programming :: Generating Prime Numbers In C?

Mar 9, 2011

I'm trying to write a program that generates a random number and then tells if it is prime or not. I have doe some research about how to calculate prime and random numbers but I'm still having trouble. I don't really get how to calculate a prime number. I know a prime number is a number that is divisible by 1 and and itself. how to calculate a prime number in C?

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Programming :: Matching Numbers With Nawk

May 11, 2011

I am struggling to understand why nawk matches values that are either 1 or 2 digits in length, but not 100 (3 digits).

Am I missing something obvious ? Should I use substr to remove the % ?

I am sure it's something to do with character and string matching behaviour with nawk.


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Programming :: Storing Numbers In QByteArray?

Dec 15, 2010

I have a program that sends QByteArray datagrams over a udp socket. I would like to have 4 bytes of the datagram that contain a 32 bit integer. When saving numbers to the QByteArray, I have tried the static function number(int) and member function setNum(int), but they convert the integer to its decimal string representation and save that in the byte array. So if the number were 10, it takes 2 bytes, if it were 10,000,000 it takes 8 bytes. This wastes space, and makes it more difficult to get the number when it is packed with a few other pieces of data in the same datagram. Is there a standard way of doing this in Qt?

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Programming :: Allowing Export To Take Numbers As Variables?

Jan 26, 2011

I'm playing around with some shell scripting and I've got a directory call CS005 and I'm trying to write a script to I can locate to the directory really quick and easy.

export CS005DIR=/home/stud/0/043234/CS005

Now I get this error

CS005DIR=/home/stud/0/043234/CS005 No such file or directory.

This is because I've got numerical values within my variable.

Is there a way to allow numbers for variable names?

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Programming :: Append Numbers To A Word List?

Dec 30, 2010

If I do:

for i in $(cat names); do seq -f "$i%03.0f" 0 999; done > output5.txt

I got ( tail snipped):


If I do:

for i in $(cat names); do seq -f "%03.0f$i" 0 999; done > output4.txt

I got:


How I can get numbers from 000 to 999 appended like:


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Programming :: Bash Rounding Up Numbers With Printf

Feb 2, 2010

For eg: $NUMBEROFPASSES=6.19 to round up I use NUMBEROFPASSES=$(printf %.0f $NUMBEROFPASSES) What I need to do is round up from eg: 6.10 to be 7 and if lower than 6.10 round down to 6

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Programming :: C - Check If An Input Char Contain Numbers?

Mar 19, 2010

I would like to create a small C tool. I encounter a problem of how to make a function to check an input chars contains numbers (started from the second element).

Some samples:

char *mychar= "a3547"; (The result of function checking this is true)
char *another_char = "t6548"; (The result of function checking this is true)
char *next_char = "appl3"; (The result of function checking this is false)
char *new_char = "b1aa3"; (The result of function checking this is false)

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Programming :: Generating Series Of Numbers Of Sequence?

Mar 19, 2011

I am trying to generate sequence of number in the order of :



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Programming :: Find The Average Of First 12 Numbers In The Third Column Using 'awk'

Nov 20, 2010

I have a text file with 4 columns and 18 rows. All are integers. I wish to find the average of first 12 numbers in the third column using 'awk'.

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Programming :: Loop Produces Wierd Numbers

Aug 13, 2010

I'm learning c but then when i tried looping as i follow a tutorial, the numbers are wierd that it seems not right..

This is the example.


When i run it, it outputs this.



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Programming :: Random Float Numbers In BASH

Mar 27, 2011

I'm learning shell scripting using bash and I want to generate 4 floating point number with 5 decimal places and write them to a file and a variable. I've done all this except the $RAMDOM enviroment variable does not generate a float number but a integrer.


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Programming :: Replacing Numbers In Bash Scripts?

May 25, 2010

I have lines in some files that look exactly as below, and the line numbers they occur in are always the same. (Lines 136-139)

W 0.00000000 0.00000000 2.00000000
W 0.50000000 0.50000000 2.50000000
W 0.00000000 0.00000000 3.00000000


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Programming :: Sed To Remove Non-numerics From Phone Numbers?

Jan 26, 2011

Can sed remove non-numerics (apart from an optional leading +) from phone numbers when prefixed with text that must be retained? The need is to make phone numbers exported from an Orage address book to a .ldif file suitable for gnokii to send to a mobile phone. Here are sample lines:

facsimiletelephonenumber: +91 (123) 1234567
telephoneNumber: +44 (123) 1234567

They have to end up as:

facsimiletelephonenumber: +911231234567
telephoneNumber: +441231234567

I could do it in awk but am curious to learn if sed can do it.

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Programming :: Bash - Test If First 2 Characters In A Filename Are Numbers?

Oct 21, 2010

I have a directory with files like this:


And what I'd like is to have the files renamed like this:


How could I code it so that it removes the numerical part of the filename (at the beginning), even with different patterns (like the 01 - artist vs the 01-artist)?

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Programming :: Subtract Two Non-real (aka Decimal'd) Numbers Via Bash?

Apr 28, 2010

I just need to perform a simple operation of subtracting two numbers - that aren't whole numbers, i.e 200.56 - 67.24attempting to use expr i merely get "expr: non-numeric argument"

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