'df' prints number with 'K' suffix making field non-numeric #1
Description
In the following code at around line 634
# Check for enough space.
root_fs_avail=$(df /|grep -v Filesystem|awk '{print $4}')
if [ "$root_fs_avail" -lt $((swap_min + 358400)) ]; then
root_fs_avail_h=$((root_fs_avail / 1024))
log_fatal "Root filesystem only has $root_fs_avail_h MB available, which is too small."
log_fatal "You'll either need to use the --minimal installation of add more space to '/'."
return 3
fi
on some systems (e.g., newer CentOS 7) the df command may print a filesystem size with a 'K' suffix. On the next line, the 'if [ "$root_fs_avail" -lt ...] ...' then reports an error because '-lt' expects a numeric argument.
An easy fix would be to pipe df's output through sed -e 's/[^0-9]//g' thus deletng all non-numeric characters.