I have a program I've written in c++ which outputs some simulation results to a .csv excel file.
According to some instructions I need to create a simple bash script that would run the .cpp file given the command "$ run_program" ($ is not a part of the command).
I've looked on Stackoverflow and other sites however I have not found a concrete answer to help me. I would also greatly appreciate it if those who answer can take some time to explain what the parameters mean.
Thank you.
How I should make a bash script to run a C++ program?
This is one of the links I've looked at, however I could not make heads or tails out of this.
i dont know the command you are using to compile your c++ program but this might help you.
Create a file with ".sh" extension and open it with your favorite text editor.
Paste this code (change compiling line with line you are using to compile your progam)
#!/bin/bash
#Run this in terminal
#+ Command to compile c++ program. here i used common one
g++ filename.cpp -o anyname
exit 0
Now you need to run this script, To do this open a terminal
chmod u+x scriptname.sh
Then run the script by ./scriptname.sh
Hopefully this will compile your program.
It sounds like a Makefile is what you are looking for here. Definitely worth getting a handle on if you deal with programming.
Related
I use VSC to make a simple hello work c++. Then I use "g++ c.cpp -o c" to compile, but I cannot run the c.exe file by command "c.exe". I remember I could run c++ before in the same way. Do I miss anything? Could you help me please?
It seems like c.exe is there.
Since you are using PowerShell, you need to run local files with a .\ prefix, e.g. .\c.exe
I am very new to Clojure and am following Clojure for the Brave and True. One of the steps is to create ~/.lein/profiles.clj . I cannot find how I am supposed to do this so any help would be much appreciated.
Thanks in advance
From your question, I take it that you are a) on a Linux system and b) do not yet know your way around Linux. Is that correct?
If so, there are a few things, you should know:
Filenames beginning with a dot are hidden. You can not see them in normal file listings. All graphical filemanagers have a switch somewhere to show hidden files. If you are typing in a terminal, you can use the -a option of the command ls to show them. Compare the output of ls ~ and ls -a ~on the command line. You can usually get a command line if you start a "terminal" or "console" from menu.
You can create directories on the command line with mkdir. In this case you would call it like this: mkdir ~/.lein on the command line.
You can then use one of the many, many text editors to create and edit the profiles.clj file. For example, on the command line call gedit ~/.lein/profiles.clj to open a graphical editor. It should be installed on most systems. If you do not have a graphical user-interface, you could try the editor nano instead of gedit
If you are on a Windows box, all these instructions make no sense. In that case, I cannot help you much as I have never run Clojure on Windows.
If you are already an experienced Linux user and I just misread your question, I beg your pardon for stating the obvious.
I was wondering if anyone can help me. I'm currently working on a game engine project which involves its own c++ compiler. For this I'm "borrowing" the visual studio 2013 c++ compiler. everything works fine. The problem I am having is a cant figure out how I would pass commands to the elevated program in a batch file.
Let me Explain, right now I am using a program which calls the "vcvarsall.bat" file and passes in "x86" as a parameter. This is great for manual entry as it then allows me to input the commands to compile files. E.G "cl /EHsc <cpp files>"
As of now, when I add commands after I call "vcvarsall.bat", they just give me a command reference error saying the command is not recognized.
What I want to achieve is being able to call one bat file which executes and compiles all of my code for me. instead of having to manually type in the commands every time. This way the entire process is easier for the user.
Any help would be appreciated,
Thank you in advance!
when I add commands after I call "vcvarsall.bat"
Maybe it has been too long since I last did a batch file .. hope the following gets you started:
I think any .bat file will accept parameters, and internally, the .bat writer (i.e. you) uses special identifiers. Often they are named something like %1 and %2, etc. (some scripting languages use $1, and probably a few other approaches)
Without consuming these parameters in your .bat file, the command line interpreter tries to use the parameter as another command (so you get 'command not recognized')
Search all .bat files on your system for %1 (or $1 or whatever) ... maybe you'll find enough hints.
Thank you all for the help, the way I solved the problem was by finding the last batch file which was called and making the end of the file call another batch file in the main compile directory, this means I can programatically generate this batch file making it incredibly easy to generate custom compilations. thank you all,
Alister
I've written a simple c++ program on Xcode, all contained within ONE FILE called huffmanGenerator.cpp. The program reads input from a file on the user's computer, and writes output to a file saved to their computer.
The instructor has asked us to create a makefile so that our programs compile and run with g++ OR gcc in Linux; however she never showed us how to do so, and when the class asked for help, her answer was we could figure it out.
I found many links online, but they're all very confusing as this is all new to me, and most of them fail to answer even the most basic questions like what kind of file should the makefile be? Is it a .txt? Should I just save one in word?
Please help do what the instructor won't, enlighten me. Thanks!
what kind of file should the makefile be?
It should be a plaintext file called Makefile or makefile. The reason the name matters is because when you run the make command, it looks for a file with this name by default for directions on how to compile your code. You can also name it whatever you want as long as you specify the name when you run it (make -f filename).
Is it a .txt?
No, it has no extension. Extensions don't mean that much in *nix.
Should I just save one in word? (Assume you mean Microsoft Word.)
No, definitely not. Whitespace (tabs/spaces/new lines) have meaning in these files, so you should use an editor that won't add formatting to the file. Something like pico/vi/etc.
Here is an example of a makefile, that I think does what you are asking.
# You can change your compiler to gcc / g++ here.
CC=g++
# Add whatever flags you want to use here.
CFLAGS=-c -Wall
all:
$(CC) $(CFLAGS) huffmanGenerator.cpp -o huffmanGenerator
#Use something like this to run `make clean` which deletes your object files, so you can do a fresh compile.
#clean:
# rm -rf *o huffmanGenerator
As a side note, you would be served well not to blame your professor for not spelling out everything for you. When you graduate, you will often be given tasks that have no other directions than a set of requirements and a deadline. You will need to figure it out. You could have easily made this make file by visiting http://mrbook.org/tutorials/make/ (search google for 'makefile tutorial').
The makefile should be called Makefile. It is just a text file.
You need a text editor. There are many to choose from, vim, emacs, nano, pico, ..., etc.
Open a command line and run, say
$ pico Makefile
Then you would enter the contents of the Makefile
all:
g++ -o huffmanGenerator huffmanGenerator.cpp
Save and exit and run make
$ make
I have a C shell script that calls two
C programs - one after the another
with some file handling before,
in-between and afterwards.
Now, as such I have three different files - one C shell script and 2 .c files.
I need to give this script to other users. The problem is that I have to distribute three files - which the users must keep in the same folder and then execute the script.
Is there some better way to do this?
[I know I can make one C code file out of those two... but I will still be left with a shell script and a C code. Actually, the two C codes do entirely different things... so I want them to be separate]
Sounds like you're worried that your users aren't savy enough to figure out how to resolve issues like command not found errors and the like. If absolutely MUST hide "complexity" of a collection of files you could have your script create the other files. In most other circumstances I would suggest that this approach is only going to increase your support workload since semi-experienced users are less likely to know how to troubleshoot the process.
If you choose to rely on the presence of a compiler on the system that you are running on you can store the C code as a collection of cat $STRING >> file.c commands to to create your two C files, which you then compile and use.
If you would want to use pre-compiled programsn instead then the same basic process can be used except instead use xxd to both generate the strings in your script and reverse the conversion process to give you working binaries. Note: Remember to chmod the binary so that it is executable.
use shar command to create self-extracting archive.
or better yet use unzipsfx with AUTORUN option.
This provides users with ONE file, and only ONE command to execute (as opposed to one for untarring and one for execution).
NOTE: The unzip command to run should use "-n" option, that way only the first run would extract the files and the subsequent would skip the extraction.
Use a zip or tar file? And you do realize that .c files aren't executable, you need to compile & link them first?
You can include the c code inside the shell script as a here document:
#!/bin/bash
cat > code.c << EOF
line #1
line #2
...
EOF
# compile
# execute
If you want to get fancy, you can test for the existence of the executable and skip compiling them if they exists.
If you are doing much shell programming, the rest of the Advanced Bash-Scripting Guide is worth looking at as well.