hi i am new to c programming and found this on the net could someone tell me what it actually does, many thanks in advance cheers
#include <fcntl.h>
main()
{
int fd;
fd = open("in1", O_RDONLY);
printf("%d\n", fd);
}
and this too please
#include <fcntl.h>
main()
{
int... (1 Reply)
Hi All,
Please help me in the following query
need a command to get all the files in the present directory except the next day file
format :: abc_<DD>.log
$ls -l
abc_10.log
abc_10.log
abc_11.log
Now i need the output in abc.list which should contains
$more abc.list
abc_10.log... (5 Replies)
Hi
i have a variable with lots of tokens seperated with spaces.
e.g VAR="ABC DEF GHSD GHQS TUTSD JHDTQ QDHQ CDQKDGQ WQUTQD DQUTQD DQJGDQ QDTQD WDQUTQDU QDUGQD QDJGQD DQUTDUQ QDUIDTQ"
i want to separate all of the above tokens and call a script with each of the token e.g sh script.sh <TOKEN>... (4 Replies)
Hello guys I am new to awk programming. I need the below required script which can perform the following.
I have a file containing below data.
SNA NoCRD = 131
SNA OBarr = 3
SNC NoCRD = 76
SNC OBarr = 1
SND NoCRD = 155
SND OBarr = 5
SNE NoCRD = 100
SNE OBarr = 1
SNF NoCRD = 131
SNF... (2 Replies)
Below is my code which gives output like this: Every time we have to open the script file and change the value of TG in BEGIN. what i want to do is
that i give two three values at the sametime and then run the script and
it gives output one by one at the same time.
I think i have to define... (2 Replies)
My data is something like shown below.
date1 date2 aaa bbbb ccccc
date3 date4 dddd eeeeeee ffffffffff ggggg hh
I want the output like this
date1date2 aaa eeeeee
I serached in the forum but didn't find the exact matching solution. Please help. (7 Replies)
Executed the following if conditions .. and got different results .
only (( )) gave correct o/p with all scenarios .
Can anybody please let me know what is the difference between and ] and ((condition)) when used with if condition.
And why each condition gave different result.
1.... (2 Replies)
hi,
I have some problems in my simple script about the redirect echo stdout command inside a condition. Why is the echo command inside the elif still execute in the else command
Here are my simple script
After check on the two diff output the echo stdout redirect is present in two diff... (3 Replies)
Input file (4 DATA record shown in this case):
DATA AA0110
ACCESSION AA0110
VERSION AA0110 GI:157412239
FEATURES Location/Qualifiers
length 1..1170
1..1700
/length="1170"
position ... (5 Replies)
HI
My doubt may be basic one but I need to get it clarified..
When i use "if" condition that checks for many AND, OR logical conditions
like
if ]; then
return 0
fi
Even the if condition fails it returns as zero.. Any clue..
But if i add else condition like
if ]; ... (2 Replies)
Discussion started by: Priya Amaresh
2 Replies
LEARN ABOUT LINUX
pidof
PIDOF(8) Linux System Administrator's Manual PIDOF(8)NAME
pidof -- find the process ID of a running program.
SYNOPSIS
pidof [-s] [-c] [-n] [-x] [-o omitpid[,omitpid..]] [-o omitpid[,omitpid..]..] program [program..]
DESCRIPTION
Pidof finds the process id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems
used in run-level change scripts, especially when the system has a System-V like rc structure. In that case these scripts are located in
/etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8) program that should be used instead.
OPTIONS -s Single shot - this instructs the program to only return one pid.
-c Only return process ids that are running with the same root directory. This option is ignored for non-root users, as they will be
unable to check the current root directory of processes they do not own.
-n Avoid stat(2) system function call on all binaries which are located on network based file systems like NFS. Instead of using this
option the the variable PIDOF_NETFS may be set and exported.
-x Scripts too - this causes the program to also return process id's of shells running the named scripts.
-o omitpid
Tells pidof to omit processes with that process id. The special pid %PPID can be used to name the parent process of the pidof pro-
gram, in other words the calling shell or shell script.
EXIT STATUS
0 At least one program was found with the requested name.
1 No program was found with the requested name.
NOTES
pidof is actually the same program as killall5; the program behaves according to the name under which it is called.
When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is possible that
it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs. Note
that that the executable name of running processes is calculated with readlink(2), so symbolic links to executables will also match.
SEE ALSO shutdown(8), init(8), halt(8), reboot(8), killall5(8)AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl
01 Sep 1998 PIDOF(8)