04-11-2009
7 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi
I have a C++ program that generates a lot of log information on the console, I need this output (printed using printf function) to go to a file since I will use crontab to schedule the job.
I know I can do this:
myprog > myfile
but I don't know how to enter this in crontab.
I use... (3 Replies)
Discussion started by: GMMike
3 Replies
2. UNIX for Dummies Questions & Answers
Hello
I wander if im doing :
ls -l and its giving me lets say 3 results :
-rw-r--r-- 1 blah other 1789 May 19 2003 foo.c
-rw-r--r-- 1 blah other 1014 May 19 2003 foo.h
-rw-r--r-- 1 blah other 270 May 19 2003 foo1.c
now I would like to use the first... (1 Reply)
Discussion started by: umen
1 Replies
3. Programming
The output I got for this pgm is "4 4 4 4".
Can any one help me to understand how I got this output.
Also please suggest me some links to learn about argumnets evaluation in C.
# include <stdio.h>
void func(int a, int b, int c, int d)
{
printf("%d %d %d %d", a, b, c, d);
}
int... (3 Replies)
Discussion started by: arunviswanath
3 Replies
4. Programming
1 #include <fcntl.h>
2
3 main(int argc, char *argv)
4 {
5 char buf;
6 int fd, count = 0;
7
8 if (argc > 1)
9 fd = open(argv, O_RDONLY);
10 else
11 fd = 0; /* Use standard input */
12
13 while (read(fd, buf, 1) > 0) {
14 if (count < 5) write(1, buf, 1);
15 ... (3 Replies)
Discussion started by: bishweshwar
3 Replies
5. Programming
Hello All,
iam a new memeber today i joined this forum.
hope i will get help. the below program takes input strings and give reverse of input string.
&& mv /home/test1/programs/display /home/test1/programs/old
echo " Please enter the test "
read a
echo "$a" > file
wc -c file > file1
perl... (1 Reply)
Discussion started by: ameyrk
1 Replies
6. Shell Programming and Scripting
Hi All,
I have created a sample perl program in one of the unix environment as below
#!/usr/bin/perl
print "Content-type: text/html\n\n";
print "<H1>Hello World</H1>";
When I execute it in unix, I get the below
Content-type: text/html
<H1>Hello World</H1>
However, when I... (1 Reply)
Discussion started by: mr_manii
1 Replies
7. Shell Programming and Scripting
hi,
i have posted the same kind of the question in some other forum of the same site. but realized that it is supposed to be here so i am reposting it .this is the perl script written to check for particular pattern.
my file 1 would look like this
hwk:678:9878:asd:09: abc cfgb 12 nmjk ......... (3 Replies)
Discussion started by: anurupa777
3 Replies
LEARN ABOUT CENTOS
dpkg-preconfigure
DPKG-PRECONFIGURE(8) Debconf DPKG-PRECONFIGURE(8)
NAME
dpkg-preconfigure - let packages ask questions prior to their installation
SYNOPSIS
dpkg-preconfigure [options] package.deb
dpkg-preconfigure --apt
DESCRIPTION
dpkg-preconfigure lets packages ask questions before they are installed. It operates on a set of debian packages, and all packages that
use debconf will have their config script run so they can examine the system and ask questions.
OPTIONS
-ftype, --frontend=type
Select the frontend to use.
-pvalue, --priority=value
Set the lowest priority of questions you are interested in. Any questions with a priority below the selected priority will be ignored
and their default answers will be used.
--terse
Enables terse output mode. This affects only some frontends.
--apt
Run in apt mode. It will expect to read a set of package filenames from stdin, rather than getting them as parameters. Typically this
is used to make apt run dpkg-preconfigure on all packages before they are installed. To do this, add something like this to
/etc/apt/apt.conf:
// Pre-configure all packages before
// they are installed.
DPkg::Pre-Install-Pkgs {
"dpkg-preconfigure --apt --priority=low";
};
-h, --help
Display usage help.
SEE ALSO
debconf(7)
AUTHOR
Joey Hess <joeyh@debian.org>
2018-02-28 DPKG-PRECONFIGURE(8)