I have a script file to automatically compile a C++ program, then automatically run the executable.
script
g++ -o bin/program main.cpp
bin/program
The problem is, sometimes the compiler encounters an error, and the executable is not generated. Therefor, the script will be running an outdated version.
How can I detect if g++ was unable to generate the executable, so that I may prevent the script from running the file?
답변1
You can check the exit code of execution of g++ like this:
g++ -o bin/program main.cpp
if [ "$?" -eq 0 ]
then bin/program
fi
답변2
Check if the file exists first:
test -x foo && ./foo