10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
suppose i have a perl script that is normally run this way:
./checkdisk.pl -H hostname -w 40 -c 80
but, for whatever reason, i cannot run the script directly as it should. But i can cat it through pipe. How can i pass the arguments "-H hostname -w 40 -c 80"?
so this is what i'm doing,... (6 Replies)
Discussion started by: SkySmart
6 Replies
2. Shell Programming and Scripting
I need to declare a function, this function will contain a script, this script cannot be in a file but must be piped. and then, for the script to run, i need to pass arguments to it.
everything has to be on one line. so i'm basically looking for a one-liner
here's what i'm doing:
myfunc ()... (3 Replies)
Discussion started by: SkySmart
3 Replies
3. Shell Programming and Scripting
Hi,
I am having a bit of trouble writing this.
I have the script working if I only use 1 of these but it's not working the way i need it to.
Basically more above the script i may or may not have a 5th variable defined. if i do it does a process before getting to the rest of the script.... (2 Replies)
Discussion started by: techy1
2 Replies
4. Shell Programming and Scripting
I am developing a script where 3 other scripts are included.
This is a graph related script.
COMPLETE IDEA:
-There are 3 different graph scripts. I would like to create a master graph with all 3 in one.
-User chooses the type of graph
-User is asked to enter the required auguments (... (7 Replies)
Discussion started by: newkid.7955
7 Replies
5. Shell Programming and Scripting
Hello,
I am trying to make a bash script that can pull data from a file and then change one part of said data.
I want to search by username and pull the full line. That way there is a way to replace just one part of that line then return it back to the file.
My Data is stored like:
... (1 Reply)
Discussion started by: serverfull
1 Replies
6. Shell Programming and Scripting
I have trouble getting this logic to work
#!/bin/bash
function assign_var(){
while
do
read -p "$2 :" $3
done
}
assign_var '$IPADDRESS' ipaddress IPADDRESS
Basicly, i want to make sure that entry is made (i can add more sophisticated checks later), but the idea is to recycle... (11 Replies)
Discussion started by: serverchief
11 Replies
7. 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:
Your script must check for the correct number of arguments (one argument). If somebody tries to invoke the... (1 Reply)
Discussion started by: brooksie91
1 Replies
8. UNIX for Dummies Questions & Answers
Hi,
What is the maximum number of arguments that could be passed to zsh ?
To find out that I tried a simple script.
And the maximum number of arguments that could be passed turned out to be 23394
#! /bin/zsh
arg=1
i=1
subIndex=23000
while
do
arg=$arg" "$i
i=$(($i + 1))... (9 Replies)
Discussion started by: matrixmadhan
9 Replies
9. Programming
I have to write a C program using sys call (read, no fread) to read from shell all the parameters, without know how many are them.
I tryed in some ways, but I have no success.
Any Idea?
Can I use read to read from stdin? (1 Reply)
Discussion started by: DNAx86
1 Replies
10. Shell Programming and Scripting
I am writing script in c shell and using this script to read the command line arguments, but it is not working. Pl. someone let me know what is the problem.
#!/bin/csh -f
if ($#argv <> 2) then
echo "you must give exactly two parameters"
else
set name1 = $argv
... (1 Reply)
Discussion started by: skumar11
1 Replies
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)