I am a new Linux user learning from Arch Linux and recently Linux From Scratch (7.7). I set up a new installation of AL to be my LFS host; I manually (and also with the provided bash script) checked prerequisite packages on my host. In my case, I am confident I resolved all discrepancies except for linking /usr/bin/yacc to /usr/bin/bison.
The provided script results in
yacc is bison (GNU Bison) 3.0.4, as opposed to
/usr/bin/yacc -> /usr/bin/bison. Because the latter was the output format for checked symbolic links, I assumed the script was telling me yacc is prepared but employing a different kind of link. I investigated more about Linux file systems and took away a cursory understanding that actual data is described by inodes (metadata), which are in turn pointed to by the (abstract) files we interact with. Files that simply point to the same inode are considered hard links (although, I think the files are independent of each other). I ran
sudo ls -il /usr/bin | less and found yacc and bison had slightly different inode numbers (152077 and 152078, respectively). Does this mean they are not hard linked, or am I misinterpreting the script output and require a fix?
Edit: Relevant commands from bash script:
bison --version | head -n1 if [ -h /usr/bin/yacc ]; then echo "/usr/bin/yacc -> `readlink -f /usr/bin/yacc`"; elif [ -x /usr/bin/yacc ]; then echo yacc is `/usr/bin/yacc --version | head -n1` else echo "yacc not found" fi