Hi there,
I found the following script on the net, i like to use it as a standard template for new scripts.
But i do not understand the meaning of the last line, can anybody explain what going on on the last line
vflag=off
filename=
while getopts vf: opt
do
case "$opt" in
v)... (9 Replies)
I am trying to reset the IP address on a Unix HP box here in my office and I am stuck in this EM100 mode and cant issue any commands. Any help would be great. By the way I no zero about unix. Thanks (0 Replies)
Hi, i've got the following:
a=`echo $b | grep '^.*/'`
i'm storing in the variable the value of the variable b only if it has a / somewhere.
It works, but i don't want to print the value. How do i give the value of b to the grep command without the echo?
thanks! (5 Replies)
Hello..
I am doing some awk-ing and among all I use substr inside it..
I have: ....substr($0,60,37)
meaning as U all know take from 37 char. from point 60..
can I put it like this substr($0,60,end of line)
meaning take it from point 60 and take all characketrs in that line until line... (2 Replies)
First af all hi.
i want to create a batch script which inform when users log in last time on system or if they are online when they logged in.
I want ot use a file .users which has the usernames of users.
i want to print for example
peter is ONLINE: Logged in on Wed Feb 11 07:47
alex... (2 Replies)
I am looking for some model like this:
My Computer
-------------
Intermediate Server (IS)
-------------
Own Server
I must be able to ssh into the Intermediate Internet Server which is generally an online version of SSH service through which I will connect to Own Server. I was the IS to... (2 Replies)
Can any body tell me when I put close(2), why the code does not show any out put?
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
int main(){
int fd1,fd2,fd3,fd4;
close(2);
fd1=open("test1.txt",O_WRONLY |O_CREAT | O_TRUNC,0744);
fprintf(stderr,"fd1 = %d\n",fd1);
... (5 Replies)
Hello experts,
I am using fork() in my code but I am confused which output comes first child or parent?
I did the following code .My book shows parent first but my linux shows child first.Can anyone tell me why?
#include <stdio.h>
int main(){
int pid;
printf("I am original process with pid... (5 Replies)
I have this small program that runs with the flat assembler. My problem is that at the receive line function it receives the line and if there isn't a $ typed at the end of the user input the program displays a lot of strange stuff, sometimes beeps and then it seems to terminate without causing any... (13 Replies)
Discussion started by: Errigour
13 Replies
LEARN ABOUT FREEBSD
getbsize
GETBSIZE(3) BSD Library Functions Manual GETBSIZE(3)NAME
getbsize -- get preferred block size
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
char *
getbsize(int *headerlenp, long *blocksizep);
DESCRIPTION
The getbsize() function returns a preferred block size for reporting by system utilities df(1), du(1), ls(1) and systat(1), based on the
value of the BLOCKSIZE environment variable. BLOCKSIZE may be specified directly in bytes, or in multiples of a kilobyte by specifying a
number followed by ``K'' or ``k'', in multiples of a megabyte by specifying a number followed by ``M'' or ``m'' or in multiples of a gigabyte
by specifying a number followed by ``G'' or ``g''. Multiples must be integers.
Valid values of BLOCKSIZE are 512 bytes to 1 gigabyte. Sizes less than 512 bytes are rounded up to 512 bytes, and sizes greater than 1 GB
are rounded down to 1 GB. In each case getbsize() produces a warning message.
The getbsize() function returns a pointer to a null-terminated string describing the block size, something like ``1K-blocks''. The memory
referenced by headerlenp is filled in with the length of the string (not including the terminating null). The memory referenced by
blocksizep is filled in with block size, in bytes.
SEE ALSO df(1), du(1), ls(1), systat(1), environ(7)HISTORY
The getbsize() function first appeared in 4.4BSD.
BSD November 16, 2012 BSD