My shell script stops after exec

Question

I\'m writing a shell script that looks like this:

 for i in $ACTIONS_DIR/*
    do
            if [ -x $i ]; then
                    exec $i nap
                     


        

Answer 1

exec transfers control of the PID over to the program you're exec'ing. This is mainly used in scripts whose sole purpose is to set up options to that program. Once the exec is hit, nothing below it in the script is executed.

Also, you should try some quoting techniques:

for i in $ACTIONS_DIR/*
    do
        if [ -x "$i" ]; then
                "./$i" nap
        fi
done

You might also look into using find(1) for this operation:

find $ACTIONS_DIR \
    -maxdepth 1 \
    -type f \
    -perm +0111 \
    -exec {} nap \;

Answer 2

exec never returns to the caller. Just try

        if [ -x $i ]; then
                ./$i nap
        fi

Answer 3

exec replaces the shell process. Remove it if you only want to call the command as a subprocess instead.