Its difficult to explain what I am exactly looking for, so let me try with an example..
Suppose my program prints out thousands lines. But once my program ends.. I am not able to scroll up and see all the 1000 lines. The size of the screen buffer is obviously limited. Is there anyway I can increase this size ?
Are you talking about a real or virtual console (e.g., such as you get on a Linux system with Ctrl-Alt-F1), or a terminal window (e.g., xterm or rxvt in X)?
If the latter, the terminal program probably has an option to set the buffer size; in xterm and rxvt, it's -sl NUM, where NUM is the number of lines you want to save. See your terminal's man page for more details.
In either a console or a terminal window, you can use typescript to save the session to a file, or you can use a pager such as [i/less[/i] or more to display the output of the command:
Code:
COMMAND | less
Or redirect the output of the command to a file:
Code:
COMMAND > FILE
Quote:
If there is a way, then is there any harm in increasing the size?
Hi...
I am trying to read a binary data that have different types of messages of different lengths. I am using fread() but this functions needs the size and count to read the buffer from the file. I think this may cause that the buffer overlaps other messages.
Is there an alternative to read... (1 Reply)
hi everyone,
can any one help change the buffer cache size in redhat and suse?? this error i got when i installed oracle 10g and it went well and when i try to mount the database using startup cmd it says too many buffer cache parameters (error code : ora-1034)
thnq in advance (0 Replies)
When I checked with top command, I found tht my buffers are always 137M, which means that they are sort of overloaded. My Inactive memory is 520M. Is it possible to increaase the buffer size and what would be the command for that? (0 Replies)
The "top" command shows that my buffer size is always at 137M, which I think has reached to the maximum. However, Ido have lots of Inative memory? Is it possible to increae the buffer size? and what is the command for that? Further, this is the buffer for writing to the hard disk? (3 Replies)
Hi Group,
I am struggling to increase buffer size of expect,
sometimes after increasing the buffer size, expect captures all my expected output, sometimes not, :-(
I tried
match_max 700000
set expect_out(buffer) {}
Could anybody guide me for any solution.
HTH,... (1 Reply)
Hi All,
I am trying to read output from a command. The output format is as follows:
Thursday 13 Mar 2008 Information
This is sample text
Friday 14 Mar 2008 Warning
This is one more sample text
First line contains informtation (date etc) and the 2nd line contains some information.
... (3 Replies)
:confused:Hi
This was installed on the Linux box a few weeks back by a guy that no longer works for us. All worked fine until last week. Now when we connect its just a blank screen with no icons.
I get a whole bunch of errors when starting the service too:
Tue Feb 23 14:29:45 2010
... (1 Reply)
Hi,
I am using the below command to get the output in a file called "Logs.txt"
tail -f filename | egrep -i "cpu | hung " >> Logs.txt The problem is the Logs.txt file gets updated only after the buffer is 8Kb, but i want to update the file immediately and not wait for the buffer to get 8kb.
Is... (8 Replies)
Hi,
Can I find size of the file from size of the buffer written?
nbECRITS = fwrite(strstr(data->buffer, ";") + 1, sizeof(char), (data->buffsize) - LEN_NOM_FIC, fic_sortie);
Thank You :) (1 Reply)
Hello,
I would like to increase the size of my buffer in my xterm window. My shell is bash and my home directory is auto mounted. I'm on Solaris 10, RHEL 5 and SLES 11 servers. Do you know where I can do this? (4 Replies)
Discussion started by: bitlord
4 Replies
LEARN ABOUT HPUX
scroll_lines
scroll_lines(5) File Formats Manual scroll_lines(5)NAME
scroll_lines - number of scrollable lines used by the Internal Terminal Emulator
VALUES
Failsafe
Default
Allowed values
Recommended values
No larger than is sufficient for a user's purposes.
DESCRIPTION
This tunable specifies the total number of scroll buffer lines used by the HP-UX graphics console Internal Terminal Emulator (ITE). This
value is the sum of both on-screen and off-screen lines. For instance, if the ITE has 68 on-screen lines, and the value of scroll_lines is
128, then there will be 60 off-screen lines that can be scrolled back into view.
During boot, the system may adjust the value of upward, depending upon the installed graphics hardware. On graphics cards capable of run-
ning at more than one resolution, the ITE will first determine the maximum number of on-screen lines across all possible resolutions. The
ITE will then ensure that is at least equal to this number of on-screen lines. For example, assume the graphics card supports two possible
resolutions which result in one ITE resolution of 160 characters by 62 lines and another ITE resolution of 120 characters by 78 lines. If
a value of 62 had been specified for in the system file, the ITE would then adjust this value upwards to 78.
Who Is Expected to Change This Tunable?
Anyone.
Restrictions on Changing
Changes to this tunable take effect at the next reboot.
When Should the Value of This Tunable Be Raised?
The value of can be increased if the user would like to retain additional lines in the scroll buffer.
What Are the Side Effects of Raising the Value of This Tunable?
Increasing the size of the ITE scroll buffer consumes kernel memory which will be dedicated to the ITE and cannot be used for other pur-
poses by the rest of the system. Memory is used at the rate of 2 bytes per off-screen character.
When Should the Value of This Tunable Be Lowered?
If the additional off-screen lines in the scroll buffer are not required, can be decreased to free up a small amount of memory. The sav-
ings will be two bytes per off-screen character. For instance, if the display is 160 characters wide, decreasing by 10 will free up 3200
bytes.
What Are the Side Effects of Lowering the Value of This Tunable?
If is set below or equal to the number of lines displayed on the ITE screen, no off-screen text will be accessible.
What Other Tunables Should Be Changed at the Same Time?
None.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by HP.
Tunable Kernel Parameters scroll_lines(5)
04-25-2007
