Working with the Unix OS

Unix Administration
Compares free block count with free block list.
6. Salvage Free List
Only if Phase 5 error.
If any errors occur for root file system then
**** BOOT UNIX (NO SYNC) ****
i.e. do a cold start by pressing restart button.
ncheck -i inode_number /dev/dsk/2s6
There should be a "lost+found" directory for each mounted file system.
mklost+found - creates a "slotted directory"
:
if [ $# -lt 1 ]; then
echo "usage: mklf /path/dirname"
exit 1
fi
if [ -d $1 ] ; then
N_SLOTS=254
cd $1
mkdir lost+found
cd lost+found
i=0
while [ 'expr $i' do -le $N_SLOTS ]
do
>$i # create $i
rm $i
i='expr $i + 1'
done
else
echo "$(1) is not a legitimate directory"
exit 1
fi
/* mklf.c - makes lost+found */
#include
#include
#include
#include
main(int argc, char *argv[]){
int i, fd;
char f_name[128];
if (argc != 3 ){
fprintf(stderr,"usage: mklf /path/dirname /dev/special\n");
exit(1);
}
if ((mknod (argv[1], S_IFDIR|0700, argv[2])) == -1) {
fprintf(stderr, "mklf: can't make directory %s\n", argv[1]);
exit(2);
}
for (i=0; i