Hi there,
I hope someone can help me with this problem :
I have a directory (/var/www/file/imgprofil) which contains about 10000 JPG files. They have a naming convention thus :
prefix-date-key-suffix.jpg
they all have the prefix p-20050608-
then AAAA is a 4 letter code
the suffix is... (7 Replies)
Hi
I am accessing a file on nfs mounted device, after completing using of the file, i am tring to restore the access time and modification times of the file.
So i got the previous modified time of the file using stat() function and trying to set the date and time for the file, To set these... (6 Replies)
Hello,
say suppose i am processing an file emp.dat the field of which are
deptno empno empname etc
now say suppose i want to change the file to emp.lst then how can i do it? Here i what i attempted but in vain
BEGIN{
system("sort emp.dat > emp.lst")
FILENAME="emp.lst"
}
{
print... (2 Replies)
Hi, I am creating a ksh script to search for a string of text inside files within a directory tree. Some of these file are going to be read/execute only. I know to use chmod to change the permissions of the file, but I want to preserve the original permissions after writing to the file. How can I... (3 Replies)
Hi All,
Please help i have written an ksh script, where i am actually take count of lines in one file and want to update this count to 2nd field of a new file and apend the this into an existing file.
Note the below script is in for loop
-------- I am apending few records in a file... (7 Replies)
HI
I have 100 files in below folder:-
/home/lkj/TEST
File name like below
undo_ARL01003_120907-155022.mos
undo_ARL01006_120908-155042.mos
i want replace one first line of each file to pt all
i want change file name as below.
ARL01003.mos
ARL01006.mos
Thanks (2 Replies)
Hi,
I have a files in a directory as below :-
ls -1
mqdepth-S1STC02
proc-mq-S1STC01
proc-mq-S1STC02
proc-mq-S1STC03
Whereever i have S1STC i need to copy them into new file with file name S2STC.
expected output :-
ls -1
mqdepth-S2STC02
proc-mq-S2STC01
proc-mq-S2STC02... (3 Replies)
I have a bunch of file numbers in the file 'test':
I'm trying the above command to change all the instances of "H" to "Na+" in the file testsds.pdb at the line numbers indicated in the file 'test'. I've tried the following and various similar alternatives but nothing is working:
cat test |... (3 Replies)
Hi,
I have a file which has wrong time format and we want to correct it before we load it.
WRONG FORMAT : 93:0:00
CORRECT FORMAT :09:30:00
If you notice the 0 at the front is missing. Its the case always. (6 Replies)
I have a log file, which i have divided into 14 files using csplit, the file looks like below
test-000000
test-000001 #and so on until 14
now I want all the 14 files generated to be renamed as the some part of test in first line of the file how can i eliminate the unwanted text?
sample... (5 Replies)
Discussion started by: Sekhar419
5 Replies
LEARN ABOUT BSD
badsect
BADSECT(8) System Manager's Manual BADSECT(8)NAME
badsect - create files to contain bad sectors
SYNOPSIS
/sbin/badsect sector ...
DESCRIPTION
Badsect makes a file to contain a bad sector. Normally, bad sectors are made inaccessible by the standard formatter, which provides a for-
warding table for bad sectors to the driver; see bad144(8) for details. If a driver supports the bad blocking standard it is much prefer-
able to use that method to isolate bad blocks, since the bad block forwarding makes the pack appear perfect, and such packs can then be
copied with dd(1). The technique used by this program is also less general than bad block forwarding, as badsect can't make amends for bad
blocks in the i-list of file systems or in swap areas.
Adding a sector which is suddenly bad to the bad sector table currently requires the running of the standard DEC formatter, as UNIX does
not supply formatters. Thus to deal with a newly bad block or on disks where the drivers do not support the bad-blocking standard badsect
may be used to good effect.
Badsect is used on a quiet file system in the following way: First mount the file system, and change to its root directory. Make a direc-
tory BAD there and change into it. Run badsect giving as argument all the bad sectors you wish to add. (The sector numbers should be
given as physical disk sectors relative to the beginning of the file system, exactly as the system reports the sector numbers in its con-
sole error messages.) Then change back to the root directory, unmount the file system and run fsck(8) on the file system. The bad sectors
should show up in two files or in the bad sector files and the free list. Have fsck remove files containing the offending bad sectors, but
do not have it remove the BAD/nnnnn files. This will leave the bad sectors in only the BAD files.
Badsect works by giving the specified sector numbers in a mknod(2) system call (after taking into account the filesystem's block size),
creating a regular file whose first block address is the block containing bad sector and whose name is the bad sector number. The file has
0 length, but the check programs will still consider it to contain the block containing the sector. This has the pleasant effect that the
sector is completely inaccessible to the containing file system since it is not available by accessing the file.
SEE ALSO mknod(2), bad144(8), fsck(8)BUGS
If both sectors which comprise a (1024 byte) disk block are bad, you should specify only one of them to badsect, as the blocks in the bad
sector files actually cover both (bad) disk sectors.
On the PDP-11, only sector number less than 131072 may be specified on 1024-byte block filesystems, 65536 on 512-byte block filesystems.
This is because only a short int is passed to the system from mknod.
3rd Berkeley DistributionBADSECT(8)