Questions tagged [programming]
Questions about tools for programming (compilers, IDE, etc.) For questions that involve programming, ask on Stack Overflow.
0
votes
0answers
25 views
Creating Graphics Pipeline in Vulkan API Causes Segmentation Fault
I'm following a tutorial in vulkan programming by Alexander Overvoorde, and came across a segmentation error. I have already ran GDB to find the error and this is what I got:
(gdb) bt
#0 ...
-8
votes
2answers
83 views
Error Shell Programming in Linux [closed]
I need to fix my code?
i=0; bil_genap=0;
bil_ganjil=0;
echo -n "Batas loop : ";
read batas;
if [ -z $batas ] | [ $batas -lt 0 ]; then
echo "Ops, tidak boleh kosong atau Batas loop ...
2
votes
0answers
61 views
Good projects for bash and awk [closed]
I am learning bash and awk programming, and have gotten to the point where I want some interesting projects to work on to improve my programming. At the minute, the beginner stuff is getting too easy, ...
5
votes
1answer
109 views
Command-line diff tool
So we all have the diff command installed by default. I certainly don't know how to use it well. But I would expect some reasonable default usage. But when I type diff file1 file2 I get ... a text ... ...
-1
votes
1answer
108 views
What is the highest level of indentation today and has ever merged into the Linux Kernel? [closed]
I was recently reviewing the Linux kernel coding style guideline, and this got me thinking:
1) Indentation
Tabs are 8 characters, and thus indentations are also 8 characters. There are heretic ...
1
vote
1answer
147 views
Can you edit address values in “/proc/$pid/mem” to reflect changes in that process?
I would like to see if I can edit a value in my program while it is running by directly changing the memory.
My thought process (untested) is to do the following:
Run the program.
Open up "System ...
1
vote
1answer
97 views
Is Linux a suitable platform for learning COBOL? [closed]
I am studying a college CIS degree. Next semester, I have a choice of either studying JAVA and COBOL or JAVA and PHP. I don't know much about COBOL and only have computers with Debian. The textbooks I ...
0
votes
2answers
166 views
Is there something similar or like “pass” in python in bash/shell programming?
I sometimes need a command like pass in Python in my bash scripts.
Like:
if grep something
then
pass
else
code
fi
In Python you have:
>>> for element in a:
... if not element:
...
1
vote
1answer
57 views
The $@ variable is not working in a for loop, trying to iterate through a users list
PROBLEM:
I can't get the $@ variable to do what I want in a for loop, the loop only sends one name into the file while looping, it should loop through all the arguments and write them to the file ...
1
vote
2answers
277 views
checking if iptables are set on a system in script [duplicate]
I'm writing a script in bash and I need to check if iptables are set...I have this:
if [ `iptables-save | grep '^\-' | wc -l` > 0 ]
then
echo "Iptables already set, skipping..........!"
else
...
0
votes
1answer
420 views
How to pass argv arguments to a C program using a file or python script in linux?
I used to be able to pass input to C program by first writing a python script and using pipe to send it to the C program as an input
or write the output of python script to a file and just doing r &...
2
votes
2answers
995 views
Getting access to a variable inside a sudo clause in a script with EOF
PROBLEM:
I need to have a variable here called $user:
chown $user:$user "$HOME"/.bashrc
but it doesn't have access to it from outside the sudo and EOF:
for user in "$@"
do
if [ "$user" = root ]...
1
vote
1answer
59 views
why $($var) gives an error?
I am trying to execute the following code in shell but I am not getting the output as expected. The command is as follows:
i=1
echo $($i)
I am getting an error:
Command not found error
I think it ...
0
votes
2answers
38 views
How to have access to script variables and environmental variables inside a sudo/EOF clause in a script…BASH
PROBLEM:
I am struggling with this cp always giving errors because the variables not there...
Here is my code:
if [ ! -z "$USER1" ]
then
sudo -u "$USER1" bash <<'EOF'
sleep 5
...
2
votes
1answer
136 views
sudo -u user bash works but $HOME is not changing accordingly
I'm writing a script to setup new debian install's.
The problem is in this code:
if [ ! -z "$USER1" ]
then
sudo -u "$USER1" bash <<-EOF
cp "$BASHRC $HOME"/.bashrc
wget https://raw....
1
vote
0answers
45 views
Fakeroot on macOS tries to delete system directories
I’m having a problem with fakeroot on macOS. I created a pacman fork. When I’d like to delete a package, pacman tries to delete /usr/ instead of a subdirectory. On Linux, it is working fine, though.
...
1
vote
1answer
32 views
vi with files/directories on the side?
I'm wondering if there's a plugin or a way to make vi/vim have collapseable folders/files on the left side like a regular IDE.
0
votes
0answers
74 views
How to install HTML5/JavaScript to Netbeans?
I installed the NetBeans Connector plugin to Chromium on my MacBook. That worked perfectly. I could create new projects in HTML5/Javascript.
I tried to do the same on my Linux Mint 18.3 computer. But ...
1
vote
1answer
61 views
LibreOffice placeholder fields documentation
I have to modify a LibreOffice template with a number of conditional statements.
I managed to figure out one can add such statements through Insert > Fields > More fields, tab Functions, type ...
5
votes
4answers
14k views
How do I run .c file from the command line [duplicate]
I am beginning to work with micro controllers and programming them using C language.
All my programming experience is with Python language.
I know that if I want to test a script I have written in ...
22
votes
6answers
4k views
Is it possible for a program to get number of spaces between command line arguments in POSIX?
Say if I wrote a program with the following line:
int main(int argc, char** argv)
Now it knows what command line arguments are passed to it by checking the content of argv.
Can the program detect ...
3
votes
1answer
240 views
How to organize 3rd-party libraries for Python?
I am new in Python. I want to install many 3rd-party libraries (I think they are also called packages?) like, for example, "AstroPy". But I am not sure where the new source code will be stored (I mean,...
1
vote
3answers
1k views
How can I make my Linux server sleep and wake on LAN when not in use?
I have recently purchased myself an HP rack server for use as a personal fileserver. This server currently lives under my bed as I have nowhere else to put it. For those not aware (as I was not ...
-2
votes
1answer
43 views
Remove the gap pattern from files [closed]
I want to remove gaps (-). if gap found continuous >10 in all >Tem at the same position then remove the all gaps and also remove the sequences or gap from the query at the same position which are in ...
3
votes
2answers
2k views
Writing C# in Debian
I want to learn C# on a Debian system.
What do I have to install?
Is there something like an interactive prompt where I can try running snippets of code?
I have to learn C# and I have a dual boot ...
0
votes
1answer
39 views
How to output the display from an application to a vnc viewer? [closed]
How to I write a program on a machine with a high end graphics card and a desired platform so that other computers on a network can view the video output of the program on a separate monitor?
Like ...
1
vote
2answers
6k views
sh: 1: program not found
I have written a script to execute files one by one by calling a installed program. The same program is executing from terminal, like procheck abc.pdb, then it's working fine. But when I execute this ...
1
vote
0answers
308 views
how to get dark theme or look for netbeans?
Not quite sure how to get dark themes for Netbeans:
would like something similar to this look:
just without the "side" window.
0
votes
1answer
35 views
netbeans has preview tile or window — how to remove that preview?
How I get the "preview" window on the far right hand side to minimize or disappear?
so that the class extends fully to the right hand side.
0
votes
1answer
18 views
Having multiple computers on network access file?
Say I have a program being run on multiple computers all on the same network (and all on the same account). Every once in a while the program needs to read/write a file save.dat. The actual file ...
1
vote
0answers
554 views
High iowait while the throughput and IOPS are low
I'm new to programming & Linux.
After I finished my programs(do some IO), I found iowait is very high(~65%) while the throughput(~5M/s read + ~5M/s write) and IOPS(50~100 QPS) are low.
iostat -...
0
votes
2answers
333 views
What was the reason for lseek function to return file descriptors as long integer? [closed]
According to the book Advanced Programming in the Unix Environment :-
"The character l in the name lseek means ‘‘long integer.’’ Before the introduction of the off_t data type, the offset argument ...
0
votes
1answer
705 views
distribute the JVM across a cluster of machines
Grasping at straws for search parameters and terminology.
The key attribute to the JVM is the V for virtual (at least within the context of this question). How do you span a JVM across a cluster of ...
-1
votes
1answer
59 views
How Mount a datastore on linux in python [closed]
I need to mount xyz/pqr/ datastore on my linux mychine for in my python script.
1
vote
1answer
412 views
The most used language for Debian [closed]
What is the programming language mostly used to develop most parts of the Debian?
2
votes
2answers
659 views
How to get a list of all installed programming languages on arch linux / any linux? [closed]
Is there a way to check what programming languages are installed on a given Linux system?
For example, I have recently installed Arch Linux on my host and just for informational purposes I would like ...
-1
votes
1answer
471 views
Shell script to move files and rename it with index [closed]
Consider two directories A and B.
A contains a text file A.txt which changes its contents every 3 seconds.
The shell script is to move A.txt to directory B and rename it to A_1.txt.
After 3 seconds ...
19
votes
7answers
8k views
How can I run BASIC code in a terminal?
I would like to run BASIC code, like you used to do on older computers, in Linux.
(I am looking for a BASIC Interrupter that can run OS functions natively)
What options do I have? (Preferably for ...
1
vote
1answer
148 views
Question about the unbuffered I/O efficiency introduced in APUE 3th, 3.9
In Advanced Programming in Unix Environment 3th, 3.9, I/O Efficiency, I read about this:
The file was read using the program shown in Figure 3.5, with standard
output redirected to /dev/null. The ...
0
votes
1answer
39 views
Auto execute a program that plays music
as mentionned above, I would like to execute a programme that plays music at certain hour automatically. I tried using crontab but no outcome. This is what I put in crontab: 8 15 30 3 4 python ...
5
votes
1answer
1k views
How can I list net work devices and ipv4 address on linux without ifconfig/ip command [duplicate]
I already figured out that on Linux I can list network devices
(cd /proc/net/dev_snmp6/ && for device in *; do echo $device; done|sort)
but how can I get the ipv4 address of the device?
I ...
0
votes
1answer
279 views
Possible to replace string if match string in two files? [closed]
i am aware of this doable by sed but only limited to one string
let me explain let better, lets say in file 1 we got something like this
tom,123456789
steve,1478321
jon,315457
and in the second file ...
1
vote
1answer
2k views
Wine not working for Linux Mint 18 Sarah. Trying to run Game Maker Studio, with no luck
I'm using Linux Mint 18 Sarah MATE 32 bit and I'm trying to download Game Maker Studio off of Wine 1.6.2. It was named "GMStudio-Installer-1.4.1763.exe".
At first the installation process went ...
1
vote
1answer
49 views
Server response login error!
This is the script i build
for i in `cat cain.txt`
do
uuid=$(curl -X POST -H "ACCEPT-LANGUAGE:en" -H "Content-Type:application/json" -H "Accept: application/json" -d '{"username":"TheUserName"}...
-1
votes
1answer
100 views
C++ Apps ready for Linux as well as Windows? [closed]
I don't actually know where to start and what keywords to use for searching more, but can we simply make a programs in C++ that runs in Linux as well as Windows. I guess we are talking about binary ...
-1
votes
1answer
118 views
Append value as parameter to shell script
I found the value of a response (curl) with sed and now i need some help to take the value that i printed in a file and to use it in another substring in the same .sh script
This is the response of ...
-1
votes
1answer
59 views
An executable has two processes and is launched twice on two different terminals How to make the processes identify their roles
I have to write a c code which will contain two processes. And its executable will be launched twice on two different terminals. Both processes will know whats their role. One terminal will show ...
0
votes
3answers
525 views
Bash math & files [closed]
I need to do some math with the lines of a file and a number using bash. As in Ruby or python you can easily do string to number or viceversa. In bash all is untyped.
I have a file contain numbers ...
0
votes
1answer
77 views
Unix program for random image generator [closed]
I want to create a basic program in Unix that would display in HTML a random photo from a group of photos I selected and each time it is generated a different one would be displayed, hence random.
...
-1
votes
2answers
190 views
How to deal with C makefiles under the “Unix as IDE” philosophy?
I've been for long using VIM as my main editor and never touched an IDE since. This works great for most of the programming languages on the market. When it comes to C, though, I still fell limited to ...
