This question already has an answer here:
What are the ways to create an executable from R program
(1 answer)
Closed 8 years ago.
I'm a master student, and I've a little problem with a script written in R.
How can I produce an executable file from it?
Should I use Linux (e.g.Ubuntu) or windows? I wrote a code in Windows, but I can use Ubuntu.
Using linux, you can run your Rscript from the command line (in the terminal like this)
Rscript <name of your Rscript file>
Related
This question already has answers here:
How do you run multiple programs in parallel from a bash script?
(19 answers)
bash - Shell script opening multiple terminals and executing distinct commands [closed]
(1 answer)
Closed 5 years ago.
I am new to programming. I am writing a bash script which runs 2 different programs.
This is my script.
#!/bin/bash
./ngrok http 3005
node index2.js
The first command starts ngrok and the second one starts my local server. I noticed that they are executing one after the other. I want them to run parallel in 2 different terminal in linux. How do I do this?
This question already has answers here:
"cannot execute binary file" when trying to run a shell script on linux
(6 answers)
Closed 4 years ago.
I am trying to use the bison utility in Linux Ubuntu 16. The binary file is located at /usr/bin/bison set by the sudo apt-get bison command.
However, when I call bison from bash it looks like it works, but if I call the bison using its path, I get the following error (can be seen in screenshot)
Cannot execute binary file
Note that the path of the binary is gotten with *type -a bison*
Also, alongside the bison binary in /usr/bin, there is another file called bison.yacc which contains:
#! /bin/sh
exec '/usr/bin/bison' -y "$#"
Is there any reason to that problem? Any solution?
You cannot use . (or its effective alias, source) with binaries.
. / source is intended for executing shell code in the context of the current shell.
Binaries can only run in a child process, so you invoke them directly:
/usr/bin/bison
exec also creates a new process, but it replaces the current shell.
This question already has an answer here:
Why would a correct shell script give a wrapped/truncated/corrupted error message? [duplicate]
(1 answer)
Closed 6 years ago.
I've made a simple bat file "run_perl.bat" that executes a Perl script "Oncomine_main.pl" in \data\test_scripts directory.
Here is the content of the bat file:
cd /data/test_scripts
perl Oncomine_main.pl
I run the script from the login directory
Here is what is returned to me:
[username#path-twood3 ~]$ ./run_perl.bat
: No such file or directory /data/test_scripts
": No such file or directorymine_main.pl
Please suggest how to fix this issue?
Thank you
Add #!/bin/sh as the first line of run_perl.bat.
This question already has answers here:
How to write a text mode gui in Linux? [closed]
(2 answers)
Closed 5 years ago.
Here's a screenshot of the debian installer
Can I use this with a simple command line command?
like:
sth --size 20x20 --title 'Debian Installer' --text 'I'm a Text'
Its made with ncurses. Most commonly used with C, altough you can get bindings for it to use with python, perl and alike.
There is also the whiptail command, if you only want to write a shell script (as the debian installer is).
There is a good page of it in the Bash Shell Scripting Book on WikiBooks:
https://en.wikibooks.org/wiki/Bash_Shell_Scripting/Whiptail
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How to call external command in Python
I want to execute a windows command line operation using python. To execute the command I have to go to a particular directory within my system and then execute the command.
for example
1) Go to a particular directory c:\some\directory
2) then use command somecommand -x -y
I saw some posts on this topic but I was not able to figure them out properly.
Thanks
I assume you want to change the working directory then execute a command. So:
os.chdir(DIRECTORY);
os.system(COMMAND);
os.chdir - Set the current working directory.
os.system - Execute a "system" command.
If setting the working directory is not required you could just specify the full path to os.system.
Also, you might want to check out subprocess as it might be more what you're looking for.