Given the following code inside the function ext3_write_super():
(It's there in Linux kernel 2.6.27.59)
The conditional test at if (mutex_trylock(&sb->s_lock) != 0) is getting true? at successful lock of the sb and would execute the macro BUG()???
Given the fact that motex_trylock() is defined as below:
The reason, I'm putting this pesky question is that the code is of a working ext3 filesystem (and deemed stable to a reasonable amount) however my simple logic is telling me its an issue in testing that if() condition , am I wrong in my judgement???
I am new to the unix/linux environment.
AND........
I need to create a mini shell..that displays prompt (i.e., READY:$), accepts a command from std-in, and prints the command and any parameters passed to it. HELP!!!! (8 Replies)
hi,
i would like to replace a string in a series of files with another string, without outputting to new files. is this possible?
i've tried using sed, and started by trying to alter the contents of one file...
sed 's/string1/string2/g' file.txt
but while this does the replacement on... (2 Replies)
Hi All
Just started with shell scripts and am stumped by, what is to most of you no doubt, a simple issue.
All I'm trying to do is prompt a user for input and writing to a log file. If the user types the word 'stop', then the program should halt. If the word typed is 'clear', then the log file... (2 Replies)
Hi all,
I have sql query as follows. Please write a pro*c program for the following query.
select
sp1.cost_change
||','|| sp1.cost_change_desc
||','|| sp1.reason
||','|| to_char(sp1.active_date,'DD-MON-YYYY HH24:MI:SS')
||','|| sp1.status
||','|| sp1.cost_change_origin... (0 Replies)
Dear,
I have a alarm text file, containing minor and major alarms, i am intrested in Mojor alarm with its alarm header and next four lines in seperate file....
Can anybody help me with this below is the alarm file output.
:SEV="MAJOR":
Object-Instance %
unit-type % bts nbr % 25
... (5 Replies)
I don't know if it is right to ask you this. Can someone help me write a simple Xlib program,with button on it,and all that button do is switch 2 messages.
I have tried and tried,but never get past Hello World. Can someone help me please?
---------- Post updated at 10:17 PM ---------- Previous... (2 Replies)
The circumfrence of a circle is
#!/usr/bin/perl
print 2 * 3.141592654 * 12.50 \n"; # pi= 3.141592654
# r= 12.50
I need a simple program showing me all the steps..to modify the above to prompt for and accept a radius from the person running the... (3 Replies)
Hey all,
Writing a program that searches for a username and if they are online creates a 'beep' and sends the username and date to a log file.
the error i am getting is:
paul.obrien16@aisling:~/os$ bash checklogin
: command not found
Enter username
paul.obrien16
': not a valid... (2 Replies)
I have tried executing one particular query through perl.But I am unable to get the result. When I tried to execute the sysdate query its working when I executed my perl code.
The below query doesn't work.
QUERY 1:my $sql ="select name from tab where rownum <6";
Received ora error... (23 Replies)
Discussion started by: ramkumar15
23 Replies
LEARN ABOUT V7
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS -raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO ppm(5)AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)