Listing out the sysconf() values

Ever wondered how you could list out the defined sysconf() arguments constants and the sysconf() values for them. Well here is a simple bash script that worked for me:

#!/bin/bash

rm -f test.c

echo “#include <unistd.h>” >> test.c
echo “#include <stdio.h>” >> test.c
echo “main()” >> test.c
echo “{” >> test.c

for x in `echo “#include <unistd.h>” | cpp | grep _SC_ | cut -d ‘,’ -f 1 | awk ‘{print $1}’`
do
echo “printf(\”$x : %d\\n\”, sysconf($x));” >> test.c
done

echo “}” >> test.c

gcc test.c -o test

./test

rm -f test{,.c}