hi all,
I am a newbie in unix shell script. May I know how to write a bacth job to
read a list of files afrom the inout file and do the chmod ? Thanks.
i.e.
inside input.txt
====
a.txt
b.txt
c.txt
and I want to write a batch job to read the input .txt and do the chmod 755 for all 3... (14 Replies)
Hi
I need to read a value of the variable into array so each character/digit will become an array element,for example:
A=147921231432545436547568678679870
The resulting array should hold each digit as an element.
Thanks a lot for any help -A (7 Replies)
Hi
I've a config file like:
file1
#comment
k_array: 1 2 3 4 5
n_array: 7 8 9 0 11
I'd like to write a script that read it and store k_array and n_array in 2 arrays.
I mean the script should be able to use both as array.
I've tried to use awk as (only for one array):
... (5 Replies)
hi friends
well m facing a different sort of issue in my cron.
i hav set job like this
30 09 * * 1 /bin/backup14M
01 14 * * 1 /bin/backup14N
20 18 * * 1 /bin/backup14E
that is for every Monday at three different times.
but, first job executes well, later ones do not. I checked my... (13 Replies)
Hey all,
I have a binary file, named "exe1" that receives a parameter. (I don't have its source code).
Executing "exe1" results in creating 3 output files.
I have a bash script that runs "exe1".
I want to enter "exe1" to cluster queue (using subq command)
But i want to do it more than... (1 Reply)
Dear All
I am trying to write a script to set the SGE job execution order. I named each job with 'job1', 'job2' and 'job3'. I want my script to do: When 'job1' execution is complete, 'job2' is executed; when both 'job1' and 'job2' are complete, 'job3' is executed.
First, I tried this... (0 Replies)
Hello,
I have some issue with qsub and the standard output : I launch a script that "echoes" the string "abc" and then executes a C program in which I print informations with the printf function ; the .o file contains "abc" but not the information displayed by printf. I also tried... (0 Replies)
Hello. Hopefully this is the right forum, did a search and found some similar questions here.
I'm trying to find out if there is a way to get the job id while submitting a job using qsub. I want to monitor the list of active jobs using qstat and when my jobid is no longer on the active list, I... (3 Replies)
I have an array and two variables as below,
I need to check if $datevar is present in $filename.
If so, i need to replace $filename with the values in the array.
I need the output inside an ARRAY
How can this be done.
Any help will be appreciated. Thanks in advance. (2 Replies)
here is the pesudo file.
REREREEEEEERRRREER
SOMEStrinG1234 RERRRR EEERRRREER
SOMEStrinG1224 REREREEEREERRR REE
SOMEStrinG1214 REREREREREREREEEER
SOMEStrinG1204 RERE EEEEEERRRRRRR
SOMEStrinG1294 REREEREEE ERRRREER
SOMEStrinG1284 REREREEEEEERR REER
here is my attempted code
#include... (3 Replies)
Discussion started by: briandanielz
3 Replies
LEARN ABOUT REDHAT
losetup
LOSETUP(8) MAINTENANCE COMMANDS LOSETUP(8)NAME
losetup - set up and control loop devices
SYNOPSIS
losetup [ -e encryption ] [ -o offset ] loop_device file
losetup [ -d ] loop_device
DESCRIPTION
losetup is used to associate loop devices with regular files or block devices, to detach loop devices and to query the status of a loop
device. If only the loop_device argument is given, the status of the corresponding loop device is shown.
OPTIONS -d detach the file or device associated with the specified loop device.
-e encryption
enable data encryption. The following keywords are recognized:
NONE use no encryption (default).
XOR use a simple XOR encryption.
DES use DES encryption. DES encryption is only available if the optional DES package has been added to the kernel. DES encryption
uses an additional start value that is used to protect passwords against dictionary attacks.
-o offset
the data start is moved offset bytes into the specified file or device.
RETURN VALUE
losetup returns 0 on success, nonzero on failure. When losetup displays the status of a loop device, it returns 1 if the device is not con-
figured and 2 if an error occurred which prevented losetup from determining the status of the device.
FILES
/dev/loop0,/dev/loop1,... loop devices (major=7)
EXAMPLE
If you are using the loadable module you must have the module loaded first with the command
# insmod loop.o
The following commands can be used as an example of using the loop device.
dd if=/dev/zero of=/file bs=1k count=100
losetup -e des /dev/loop0 /file
Password:
Init (up to 16 hex digits):
mkfs -t ext2 /dev/loop0 100
mount -t ext2 /dev/loop0 /mnt
...
umount /dev/loop0
losetup -d /dev/loop0
If you are using the loadable module you may remove the module with the command
# rmmod loop
RESTRICTION
DES encryption is painfully slow. On the other hand, XOR is terribly weak.
AUTHORS
Original version: Theodore Ts'o <tytso@athena.mit.edu>
Original DES by: Eric Young <eay@psych.psy.uq.oz.au>
Linux Nov 24 1993 LOSETUP(8)