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I need to convert .byt file to .txt, I believe it can only be done in matlab. I used this code, but this doesn't seem to work:
img = fopen('myfile.byt','r');
save('myfile.txt','img');
fid = fopen('myfile.byt','r');
data = fread(fid,inf,'single');
fclose(fid);
% Manipulate your data, then...
fid = fopen('myfile_new.byt','w');
fwrite(fid,data(:),'single');
fclose(fid);
I should see how your data looks like if you want me to figure out how to save it in txt format.
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I have been asked to make a program named easter.c Now this program involves file handling. Now whenever I try to run the redirection, the terminals shows a message
zsh: command not found: easter
Following is the screenshot. Kindly view the screenshot and help.
./easter
or
export PATH=.:$PATH
Ideally, we should add the complete path of the current directory instead of .
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Closed 2 years ago.
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I have to edit the exec syscall inside the Minix OS, in a way that every process created by it should print the program file path + program name:
for example, if I type ls inside the terminal, the next line should show me path/to/ls/ls
always in this format: filepath/programName.
I already managed to print the program name, but I am having problems with the file path. Can somebody show me how can I print it?
here is the code for sys_exec.c:
#include "syslib.h"
#include "stdio.h" //I included this library
int sys_exec(endpoint_t proc_ep, vir_bytes stack_ptr, vir_bytes progname,
vir_bytes pc, vir_bytes ps_str)
{
/* A process has exec'd. Tell the kernel. */
message m;
m.m_lsys_krn_sys_exec.endpt = proc_ep;
m.m_lsys_krn_sys_exec.stack = stack_ptr;
m.m_lsys_krn_sys_exec.name = progname;
m.m_lsys_krn_sys_exec.ip = pc;
m.m_lsys_krn_sys_exec.ps_str = ps_str;
//edited by me
puts((char*)progname);//this prints the program name
return _kernel_call(SYS_EXEC, &m);
}
and some image as reference:
this is what happens when I type ls
I was on the wrong path, the file I needed to edit was \usr\src\minix\minix\servers\vfs\exec.c, I was trying to edit \usr\src\minix\minix\lib\libsys\sys_exec.c.
Inside the right file I had access to a variable called fullpath inside the get_read_vp function. I imported stdio.h and then typed printf("executing: %s\n", fullpath); inside the function.
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I have tried to reading a text file but the array stores only the last line of the text file.
char cleanedText[10000]={'\0'};
while(!feof(fileptr))
{
fgets(cleanedText, 10000 , fileptr);
}
But,the cleanedText stores only the last sentence which is written in the text line.
For example these two is written in the text,
asdasdasd
thisisus
When i print the cleanedText.
The screen just shows thisisus.
What is the problem?
Each call to fgets writes into the same place, overwriting what was there previously.
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I am trying to read all the content of a .c file and print out in another .o file all the source code of the first file, replacing all the #include <....> in this way:
Input: #include<string.h>
Ouput: "string.h"
I have to work in pure C, without the chance to use any C++ libraries
Can someone please help me with this issue?
A simple sed on your file maybe?
sed 's/.*#include *\(<|"\)\(.*\)\(>|"\).*/"\2"/' < input.c > output.o
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Cheers, I've isolated the error but I'm not sure how to fix it. Apparently, this line of code,(C language):
parse(getenv("QUERY_STRING"));
It does successfully compile, however when I run the executable the following pops up: puu.sh/nQi41/40e81c4494.png
When I simply comment out that specific line, the code compiles and runes perfectly.
Any possible solutions to this? Thanks in advance
Replace:
parse(getenv("QUERY_STRING"));
by:
char *querystring = getenv("QUERY_STRING");
if (querystring == NULL)
{
printf("Could not get querystring");
exit(1);
}
parse(querystring);
... and read the documentation of getenv.