03-17-2009
7 More Discussions You Might Find Interesting
1. Filesystems, Disks and Memory
First time so excuse my ignorance please.
I may not be accurately describing the issue.
I have inherited a small lab mostly SUN V120s.
We lost power and are trying to recover.
Nope no backups...
The primary issue I have is 1 box is an Oracle Server.
It has 2 36Gb harddrives.
I am able to... (3 Replies)
Discussion started by: murphsr
3 Replies
2. UNIX for Dummies Questions & Answers
I am really stuck on something I am sure you all will find simple.
I am VERY new to shell scripting and I am trying to figure out how to do a or statement below. So if it = 11 or 31 then...
if ; then
Please keep in mind I do not know much on shell scripting and thank you in advance as... (8 Replies)
Discussion started by: LRoberts
8 Replies
3. Shell Programming and Scripting
Hi,
I want to do SSH on many different machines and then run some commands on them. A binary application randomly generates IP addresses and my script will take care of doing SSH.
$ ./IPGen.exe | ./myScript.sh
my script looks like this:
while read line; do
result1=$(ssh $line... (2 Replies)
Discussion started by: siavash
2 Replies
4. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Hey whats up everyone,
Currently I'm stuck. In this question I have to use the following commands test, shift,... (7 Replies)
Discussion started by: AdamSahp
7 Replies
5. Homework & Coursework Questions
Good evening, I'm trying to do my own shell and I encountered some issues while creating it. Indeed when I try such a command I have
DAUPHINE> DAUPHINE> ls -l | grep terminal > fichier
DAUPHINE> cat fichier
My shell is named DAUPHINE
Whereas I should have:
Code:
... (0 Replies)
Discussion started by: AntoineCompagni
0 Replies
6. Post Here to Contact Site Administrators and Moderators
https://www.unix.com/shell-programming-and-scripting/264504-filter-blocks-awk.html
Can't see it anymore ..
Thanks ! (0 Replies)
Discussion started by: greycells
0 Replies
7. Shell Programming and Scripting
Hi,
i want use this Comand for my psql request
sh ssh -o StrictHostKeyChecking=no rootatemailaddress.de sudo psql -U postgres -c "select pg_terminate_backend(pid) from pg_stat_activity where datnam=\'$DB\';"'"
but the shell lost the inverted comma for datnam=\'$DB\'. The request deliver... (2 Replies)
Discussion started by: peterpane007
2 Replies
LEARN ABOUT DEBIAN
io_pipe
io_pipe(3) Library Functions Manual io_pipe(3)
NAME
io_pipe - create a Unix pipe
SYNTAX
#include <io.h>
int io_pipe(int64 pfd[2]);
DESCRIPTION
io_pipe creates a new UNIX ``pipe.'' The pipe can receive data and provide data; any bytes written to the pipe can then be read from the
pipe in the same order.
A pipe is typically stored in an 8192-byte memory buffer; the exact number depends on the UNIX kernel. Bytes are written to the end of the
buffer and read from the beginning of the buffer. Once a byte has been read, it is eliminated from the buffer, making space for another
byte to be written; readers cannot ``rewind'' a pipe to read old data. Once 8192 bytes have been written to the buffer, the pipe will not
be ready for further writing until some of the bytes have been read. Once all the bytes written have been read, the pipe will not be ready
for further reading until more bytes are written.
io_pipe sets d[0] to the number of a new descriptor reading from the pipe, and sets d[1] to the number of a new descriptor writing to the
pipe. It then returns 1 to indicate success. If something goes wrong, io_pipe returns 0, setting errno to indicate the error; in this case
it frees any memory that it allocated for the new pipe, and it leaves d alone.
SEE ALSO
io_readfile(3), io_createfile(3), io_socketpair(3)
io_pipe(3)