02-09-2010
Operating System?
Shell?
Command (or cron) used to invoke the script?
Content of the script?
Exact error messages as displayed on the screen or in (which?) error log?
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1. Shell Programming and Scripting
Hi all,
Does anybody know or guide me on how to remove the first N bytes and the last N bytes from a binary file? Is there any AWK or SED or any command that I can use to achieve this?
Your help is greatly appreciated!!
Best Regards,
Naveen. (1 Reply)
Discussion started by: naveendronavall
1 Replies
2. UNIX for Dummies Questions & Answers
Hi All,
I want to find zero byte files in the given folder for the given day.
I know we can use find . -size 0 -mtime 0
But is there an option for file creation.?
ls -lart | grep ' 0 Apr 24' will also work.
Also is there any alternative using awk ?
I want to know how to use awk in... (1 Reply)
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3. Shell Programming and Scripting
Hi,
I have packed fields for which I am trying to print bytes. when I try cut -b2 it does print the 2nd byte besides that it also prints additional byte that I am not aware off:confused: data looks something like this
Input:
135
246
when I try cut -b2 it gives me
30
4A
but I... (12 Replies)
Discussion started by: ahmedwaseem2000
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4. Shell Programming and Scripting
While running script I am getting an error like
Few lines in data are not being processed.
After googling it I came to know that adding such line would give some memory to it
ini_set("memory_limit","64M");
my input file size is 1 GB.
Is that memory limit is based on RAM we have on... (1 Reply)
Discussion started by: elamurugu
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5. Programming
Hi,
If I want to copy a 1024 byte data stream in to the target location in 3-bytes chunk, I guess I can use the following script.
dd bs=1024 count=3 if=/src of=/dest
But, I would like to know, how to do it via a C program. I have tried this with memcpy(), that did not help. (3 Replies)
Discussion started by: royalibrahim
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6. UNIX for Dummies Questions & Answers
Hello guys. I really hope someone will help me with this one..
So, I have to write this script who:
- creates a file home/student/vmdisk of 10 mb
- formats that file to ext3
- mounts that partition to /mnt/partition
- creates a file /mnt/partition/data. In this file, there will... (1 Reply)
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7. Shell Programming and Scripting
hello,
suppose, entered input is of 1-40 bytes, i need it to be converted to 40 bytes exactly.
example: if i have entered my name anywhere between 1-40 i want it to be stored with 40 bytes exactly.
enter your name:
donald duck (this is of 11 bytes)
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8. Shell Programming and Scripting
is there a better way to do this:
head -c 10000k /var/dump.log | head -c 6000k
unfortunately, the "-c" option is not available on sun solaris. so i'm looking at "dd". but i dont know how to use it to achieve the same exact goal as the above head command.
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9. What is on Your Mind?
A byte is the smallest unit of storage which can be accessed in a computer's memory- either in RAM or ROM.It also holds exactly 8 bits.But its old view one byte was sufficient to hold one 8 bit character.Modern days especially on .NET or international versions of Win 32, 16 bits is needed.
... (2 Replies)
Discussion started by: stoudtLion
2 Replies
10. Shell Programming and Scripting
Hi All,
I know this is a simple question but i am not sure the exact answer it.
Here is the question:
There is a huge log file , if we delete the log file ,how the corresponding occupied file memory relocate to Hard Disk.
Thanks
Srinivas (3 Replies)
Discussion started by: Srinivas Gadi
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LEARN ABOUT OSF1
cdslinvchk
cdslinvchk(8) System Manager's Manual cdslinvchk(8)
NAME
cdslinvchk - Checks the CDSL inventory of the base operating system and layered applications.
SYNOPSIS
/usr/sbin/cdslinvchk [log_file_path]
OPTIONS
The path name to a location for the log file. By default this will be /var/adm/cdsl_check_list.
DESCRIPTION
Use the cdslinvchk script to verify the current inventory of Context Dependent Symbolic Links (CDSLs) on a running system. CDSLs are spe-
cial symbolic links that enable a system to work in a cluster. If CDSLs are accidentally removed, your system will not function correctly
in a cluster. While this is not a problem for stand-alone systems, you may not be able to add the system as a member of a working cluster
at some future time. You can run this script at any time or configure it to run at system start-up, or as a cron task.
When you invoke the script, it checks the CDSLs on the running system against CDSLs of the installed inventory in /usr/.smdb and the addi-
tional entries in /var/adm/cdsl_admin.inv, and ensures that each target file exists on the system as a properly-constituted CDSL. If the
check is successful, the following message is displayed and the script terminates: Successful CDSL inventory check
If the script finds inconsistencies in the inventory, warning messages are displayed on your terminal and logged to the default log file at
/var/adm/cdsl_check_list. You can specify an alternate location for the log fill if required. The script locates any modified, missing,
or replaced CDSLs. Note that the previous copy of the log file is renamed and retained for reference and is renamed by appending to the
filename.
Refer to the System Administration guide for information on recreating any missing or broken CDSLs. Refer to the hier(5) reference page
for an inventory of CDSLs.
MESSAGES
One or more of the following messages may be displayed and logged to the log file: Unable to create <pathname> report file -- the script
was not able to create a log file. Check the target directory and security. Expected CDSL: <cdsl_pathname> -> <pathname> CDSL Target has
been modified to: <pathname> CDSL has been replaced with <pathname> CDSL is missing Failed CDSL inventory check. See details in <log file>
FILES
Additional inventory file entries. This file will not exist on all systems. The current and previous log files for inventory errors and
messages
SEE ALSO
Commands: cron(8)
Others: hier(5)
See also the System Administration guide for details of CDSLs
cdslinvchk(8)