I made a string key-value mapping struct in C, and functions to add and remove entries. I would also like to write a function to read in this file format:
Code:
key: value
another: another value
[code]...
just wondering is there a simple script to convert datetime to UTC format. I have been searching different forums but most answers are for converting UTC to datetime. For example what is a simple command/script to convert todays datetime to UTC format i.e. '2009-10-09 11:47:59'.
View 10 Replies View RelatedCode:
I'm trying to make several files: each named after the display and containing resolutions. But for some reason I get null when trying to read lines.
I have a binary file, which I need to process using my C++ application. Only thing I know is first chunk of the file is long, second chunk is int, third chunk is char etc... The binary file actually contains something like below. (which is represented in hex base).
D7 07 00 00 00 00 00 00 37 18 00 00 DE 07 ............ so on.....
I need to procees the file in the following way.
* I know the first data segment in my file is long. So it takes 4 bytes.
* so I need to read the first four bytes. That is D7 07 00 00.
* Then I need to reverse this as 00 00 07 D7.
* Finally I need to get the decimal value of above hexa decimal line. ( 00 00 07 D7)
* i.e. 00 00 07 D7 (in hex) = 7D7 (in hex- after removing leading 0 s) = 2007 (in decimal)
Like wise I need to process the whole file.
I know that this is a really simple thing to do but I just can't figure it out. How do I read a text file into an array in C++?
View 3 Replies View RelatedI have two files of data with different numbers of columns and rows. I want to read this two files in two arrays and then compare for example the second column of first data file with the third column of the other text file and if the difference between of two numbers is less than a threshold then the program print the information in the rows which fulfill this condition in the third text file. I have written below program but the problem is that it does not go through all rows of second file.
declare -a a
declare -a b
r=` awk '{n++} END {print n}' second.txt `
echo $r
awk '
{
[Code]....
Actually I have two data files one of them contains 44406 and the other one has 12066 rows and I want to check whether the difference between the components of two specific columns is less than a threshod but I have simplified it here. I had written this code and then I have realized that this code just goes through the number of rows as the same as the first.txt file and ignores the rest. I could not find the problem yet.
I need to Read a path of a file witch is written in Text file i used this
Code:
FILENAME=$1
while read line
do
echo $line
done < $FILENAME
it worked and showed me the Line witch was written in my file but now my problem is how am gonna use that line as a path i mean for example if am gonna execute a linux command on that file like dpkg -i /path/to/the/file how am gonna export it from The $Line variable and use it after the command.
I am trying to read certain lines within a file and give the output of the certain lines that dont equal my value, I think showing you would be easier. There is multiples of these inside one file...
Code:
LV Name /dev/vg00/lvol1
LV Status available/syncd
LV Size (Mbytes) 300lable/syncd
[code]....
I want to read everything in the file, if the status is not available then it should display the name (directly above status). If they are all availbale then do nothing. I think I know how to do it which includes putting the info in string form and placing in hash but it is proving to be out of my skill range.
To save on the writing of WAY to many files with very little in them, I want to put it all in one file and read a specific few lines. There will be six variables to be read at a time. Format is as such:
//Set 1
string name
5
12
[code]....
From name to 5th number is a set. The name will be of different lengths for each set. This will be a big file of probably 40+ sets. My problem lies in reading one and only one set be it set 5 or set 34. It needs to be done in C++.
I am trying to read a file character wise and trying to write the same character to another file. In this process, I unable to read and write white spaces successfully to the new file. The script reads the white spaces but while writing the white space is lost. The section of the code, is given below. Please advice how can i read and retain the white space while writing to a new file.
Code:
if [ -s f_test.txt ] && [ -f f_test.txt ]; then
echo "File Exists !!"
while read -n1 char; do
[code]....
how to program in bash, an i have a problem, i am trying compare values in between 2 values (from another file), so far my solution is to make a nested for loop, but that causes it to compare every value. Here is a visulization of what i want
file.a 2,3,4,5
file.b
3 5
[code]...
i want the values 2, 3, 4, 5 from file.a to be compared inbetween values 3 5, 6 9,1 2, 4 7 from file.b (var1 is the value im comparing, var2 is the less value, var 3 is the greater value)
for i in $var1
do
for k in $var2
do
[code]....
my problem with the above code is it compares EVERYINNG, not the values inbetween what i want (which is 3 5, 6 9 etc).
There is the Archive::Zip I think I can use with Perl 5.10 but I don't know how. I don't want to read or write any files, just zip something in memory, with best compression, like
$text = "this is a test";
$zippedtext = &Zip($text);
sub Zip {
[code]...
I guess it's only a few lines.
I wanted to read out the absolute file-path (filename) as sorted in a folder (on Linux). The reading the file-paths is ok but I have problems in sorting.
Code:
selectedDirectory = fl_dir_chooser ("Select Imagedirectory:",NULL,0); //This is just a widget to show the folder.
DIR *d;
dirent *de;
[code]....
The files -105.dcm, -106.dcm, -107.dcm lie in the folder at the bottom and -36.dcm, -37.dcm- at the top. The program compares 1 and 3 of 105 and 37, 1 is lesser than 3, then prints out first, but does not know that 105 is three digits and 37 is two digits.
I am trying to do this:
1. Read csv delimited file line1 and store all values in array
2. Use the values stored in the array and replace values in other text file with them
3. read line2 in the cvs file and repeat the process
4. Do above for all lines in the cvs file
for example:
file1.cvs content:
text1,text2,text3,"text 4"
a1,a2,3,"a 4"
file.txt content:
some text $array1$ some text
some text $array2$ some text
1. read line 1 - text1,text2,text3,"text 4" put each value in array X[] lines that contain spaces in cvs will have double quotes
2. read x[1] and replace value $array1$ (in file.txt) with x[1]read x[2] and replace value $array2$ (in file.txt) with x[2] and so on
Can above be accomplished in BASH and how?
I'm writing a script and I'm stuck. I need to read from keyboard to ask for confirmation while Im reading from a file. My code is this:
while read linea
do #code
echo "you sure? (y/n)"
read answer
#code
done < $"agenda.dat"
The problem is that stdinput has been redirected to file agenda.dat so when I do "read answer" it reads the next line from the file.
I need to read a binary file using my C++ application. That binary file may contain arbitary characters and it also contains 0 at some places. I need to read the file without considering null terminating character. (i.e. considering 0 as a normal byte and not as the end of the string)Can some one suggest me a method to read the buffer while ignoring the null terminated character.
View 4 Replies View RelatedI would like to read unix file permissions into a bash array for processing but tbh I have no idea how to do this. Then I will check for each individual access right l, d, x etc.
View 11 Replies View Relatedi'm a college student studying pc programing, and i was given today a special work and i have to program using miranda... which i've never used it >.< can anyone give me a hand to where to download, how to compile, and a simple tutorial for making a simple program or something?
View 3 Replies View RelatedI am working on a script to convert a comma seperated text file into html code line by line. The text file is like so:
Code:
link url, image url, description and I want it to output this:
Code:
<td><a href=�link url�><img src="image url" alt=�description" /></a></td>
Here is what I have so far:
Code:
#!/bin/bash
var1='<td><a href=
var2='><img src="'
var3='" alt=�thumbnail image" /></a></td>'
[code].....
It puts the entire line into the html so its no good. I'll probably need to use awk (I think).
I have a folder of 2 many files that the old ls just hangs.
I am trying to write some log files such as;
I don't mind doing one at a time, but I am just playing and even getting the listing I am not getting the date stamp, I have the following;
That does create the file, but all the files look like this;
So basically it's just sticking that ls inside the log file and not actually running the ls, so how can I use the above type to get files just created per year?
So the above is the error message I am receiving when trying to compile (at make stage when error received) binutils 2.20.1. I am compiling in Virtualbox and the base machine is SourceMage 64bit.
View 4 Replies View RelatedI don't understand the results of a simple performance test I ran using two basic scripts (running on a high end server):
perfVar.zsh :
#!/bin/zsh -f
MYVAR=`cat $1`
for i in {1..10}
[code]...
Performance test result:
> time ./perfVar.zsh BigTextFile > /dev/null
./perfVar.zsh FE > /dev/null 6.86s user 0.32s system 100% cpu 7.177 total
> time ./perfCat.zsh BigTextFile > /dev/null
./perfCat.zsh FE > /dev/null 0.01s user 0.10s system 91% cpu 0.118 total
I would have thought that accessing a VARIABLE was way faster than reading a FILE on the file system... Why this result ?Is there a way to optimize the perfCat.zsh script by reducing the number of accesses to the file system ?
Here is the issue. I am reading in a outside text file and putting in the string on that line into a char array that is already allocated.
Code:
int main(int argc, char *argv[])
{
[code]....
I am trying to scan in a file which has the format of
Quote:
username:password
hello:world
right now my program says
Code:
Scanner fin = null;
try
{
fin = new Scanner(new FileReader("proj1/passwd.txt"));
[Code]...
How do i correctly use delimiter to take in only the strings on one line?
I want to change data format in a file using bash. The orignal is like:
Code:
1 abc 6 pqr
2 def 7 stu
3 ghij 8 vwx
4 kl 9 yz
[Code]....
I am trying to have GNU assembler produce object file COFF format? I did not find relevant information from GNU assembler's manual.
View 1 Replies View RelatedI am using C. I have a fuction that returns a string
Code:
I need to format this string so that I can create a text file like so:
So I'm trying:
Code:
But I get errors like:
I was wondering, what would be a good, open-source file format for a beginner in the field, like me, to start editing sound files? This file format would have to be well documented, preferibly open-source, lossless and, most of all, convertible to more popular file formats, such as mp3 or wav maybe. I would like to design my own sound effects through directly editing the binary sequence of a sound file. I imagine this editing would have the purpose of adjusting the voltage variations of the sound device's output in time. It would be perhaps something like a PC-controlled signal generator. I'm thinking I might be able to do this in linux with something like
Code:
$ dd if=mysound.raw of=/dev/audio
But then, which book or resource woule be a good and through explenation of the relationship between the bit sequence in mysound.raw and the signal function generated in the output of, say, my computer's sound card.
I am trying to compile a software using a provided sdk. I suspect that the sdk has some mismatch of the platform library, but I am not sure.
The error I got is
Code:
The libidata.so.42 is there in that folder. I guess the file might be in a big endian. Is there a way to check if the libidata.so.42 i have might be a big endian format, rather than little endian?
If my guess is incorrect, This is a c++ code on fedora x86 machine.
I have a code over there. It reads a line from file and converts contents of it to double.
Code:
/*
* fileRead.c
[code]...