11-15-2005
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hello hackers.
i have a curl process running as cgi directly pushing stdout to the client. but i want to additionally save that stream to a file at the same time.
any directions madly welcome.
thanks in advance (3 Replies)
Discussion started by: scarfake
3 Replies
2. Shell Programming and Scripting
hi there !
i have exactly the same problem like this guy here
https://www.unix.com/shell-programming-scripting/127668-getting-curl-output-verbose-file.html
i am not able to save the curl verbose output..
the sollution in this thread (redirecting stderr to a file) does not work for me.... (0 Replies)
Discussion started by: crabmeat
0 Replies
3. Shell Programming and Scripting
Does anybody know any alternative way to save output result of a program into another new file?
I got try the command below:
program_used input_file > new_output_file
program_used input_file >> new_output_file
Unfortunately, both the ">" and ">>" is not work at this case to save the output... (6 Replies)
Discussion started by: patrick87
6 Replies
4. Shell Programming and Scripting
I'm using the following script to check cisco router health and I'd like to save output to a file,
vty_runcmd.sh > /check/check-cisco-health
script works and output is saved to a file. However using it in crontab file is created but output is not printed inside it. In crontab,
*/5 * * * *... (4 Replies)
Discussion started by: marmellata
4 Replies
5. Shell Programming and Scripting
Hi there.
i have created a program that in the end it will give output like this
1 2 3 4 5
10 9 8 7 6
11 12 13 14 15
.............. 17
i wonder how to save the output into a single string and into a file.
i.e 1 10 11 12 9 2 3 8 13 14 7 4 5 6 15 17 (in this order,... (3 Replies)
Discussion started by: shdin271
3 Replies
6. 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:
Hi there.
i have created a program that in the end it will give output like this
1 2 3 4 5
10 9 ... (1 Reply)
Discussion started by: shdin271
1 Replies
7. Shell Programming and Scripting
I am trying to modify the "corestat v1.1" code which is in Perl.The typical output of this code is below:
Core Utilization
CoreId %Usr %Sys %Total
------ ----- ----- ------
5 4.91 0.01 4.92
6 0.06 ... (0 Replies)
Discussion started by: Zam_1234
0 Replies
8. Shell Programming and Scripting
Hello All,
I have a text file containing output from a command that contains lots of escape/control characters that when viewed using vi or view, looks like jibberish. But when viewed using the cat command the output is formatted properly.
Is there any way to take the output from the cat... (7 Replies)
Discussion started by: mrm5102
7 Replies
9. UNIX for Beginners Questions & Answers
Hi,
I am generating a YAML file from a hosts file, but am having trouble saving it to a new file.
hosts file
127.0.0.1 localhost
192.168.1.2 host1
192.168.1.3 host2
192.168.1.4 host3
192.168.1.5 host4
YAML file
$ echo 'host_entries:' && awk '{printf " %s:\n ip:... (3 Replies)
Discussion started by: sand1234
3 Replies
TEE(2) Linux Programmer's Manual TEE(2)
NAME
tee - duplicating pipe content
SYNOPSIS
#define _GNU_SOURCE
#include <fcntl.h>
ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags);
DESCRIPTION
tee() duplicates up to len bytes of data from the pipe referred to by the file descriptor fd_in to the pipe referred to by the file
descriptor fd_out. It does not consume the data that is duplicated from fd_in; therefore, that data can be copied by a subsequent
splice(2).
flags is a series of modifier flags, which share the name space with splice(2) and vmsplice(2):
SPLICE_F_MOVE Currently has no effect for tee(); see splice(2).
SPLICE_F_NONBLOCK Do not block on I/O; see splice(2) for further details.
SPLICE_F_MORE Currently has no effect for tee(), but may be implemented in the future; see splice(2).
SPLICE_F_GIFT Unused for tee(); see vmsplice(2).
RETURN VALUE
Upon successful completion, tee() returns the number of bytes that were duplicated between the input and output. A return value of 0 means
that there was no data to transfer, and it would not make sense to block, because there are no writers connected to the write end of the
pipe referred to by fd_in.
On error, tee() returns -1 and errno is set to indicate the error.
ERRORS
EINVAL fd_in or fd_out does not refer to a pipe; or fd_in and fd_out refer to the same pipe.
ENOMEM Out of memory.
VERSIONS
The tee() system call first appeared in Linux 2.6.17.
CONFORMING TO
This system call is Linux-specific.
NOTES
Conceptually, tee() copies the data between the two pipes. In reality no real data copying takes place though: under the covers, tee()
assigns data in the output by merely grabbing a reference to the input.
EXAMPLE
The following example implements a basic tee(1) program using the tee() system call.
#define _GNU_SOURCE
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
int
main(int argc, char *argv[])
{
int fd;
int len, slen;
if (argc != 2) {
fprintf(stderr, "Usage: %s <file>
", argv[0]);
exit(EXIT_FAILURE);
}
fd = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1) {
perror("open");
exit(EXIT_FAILURE);
}
do {
/*
* tee stdin to stdout.
*/
len = tee(STDIN_FILENO, STDOUT_FILENO,
INT_MAX, SPLICE_F_NONBLOCK);
if (len < 0) {
if (errno == EAGAIN)
continue;
perror("tee");
exit(EXIT_FAILURE);
} else
if (len == 0)
break;
/*
* Consume stdin by splicing it to a file.
*/
while (len > 0) {
slen = splice(STDIN_FILENO, NULL, fd, NULL,
len, SPLICE_F_MOVE);
if (slen < 0) {
perror("splice");
break;
}
len -= slen;
}
} while (1);
close(fd);
exit(EXIT_SUCCESS);
}
SEE ALSO
splice(2), vmsplice(2), feature_test_macros(7)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2009-09-15 TEE(2)