actually, i'm making an Intrusion Detection System for education purpose (for project) using Bourne shell. The problem I get in that is:-
1. My application should check if there's some modification or alteration in the directory.
2, For that thing, I need to have every attribute of file and... (1 Reply)
Hi,
I'm new to shell script programming, I only have Java programming background.
I'm writing a shell script to do file synchronization between 2 machines that located at different time zone area. Both machine were set its time zone according to its geographical location (Eg: server is at... (1 Reply)
is it possible to come up with a list of files that are modified before a certain number of hours only using the grep command?
ex. list files that were modified less than 10 hours ago
i've only managed to list files that were created on the same day, i can't seem to figure out how to work... (3 Replies)
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:
is it possible to come up with a list of files that are modified before a certain number of hours only using the... (3 Replies)
Hi all,
I'm using Red Hat Linux and want to move some folders and files around but not change the modified date. Is this possible?
I know cp has a -p flag which seems to do what I want, but this is a large volume of data so copying and deleting would not be feasible. (13 Replies)
Hi,
I have modified one file today. So if i give `ls -lrt filename` command it will show the current modified time.
But i wanted to know what is the previous modified time for this file
Is there any way to find this
Thanks,
Puni (3 Replies)
Hi.,
Last modified time of the folder is changing when I view the file inside the directory. Here is the test on sample directory. I believe that ls -l commands gives the time detail w.r.t last modified time. Pl. suggest.
bash-3.2$ mkdir test
bash-3.2$ cd test
bash-3.2$ touch myfile.txt... (2 Replies)
i have a requirement where i needed to change variable values in a properties file(first file) whenever there is change to Release details file(second file). My question is do i have to create a daemon process that always checks the modified time/inode change of the second file and then change the... (1 Reply)
Hi Frnds,
i have a folder test in which files generated daily how to chek the files that are modified on that day as a condition for ex,
if
then echo "i have got something to do with the file"
else
echo" sorry"
fi
i will have more than 3 to 4 files that are modified today. and if... (5 Replies)
Discussion started by: mahesh300182
5 Replies
LEARN ABOUT PLAN9
pipe
PIPE(2) System Calls Manual PIPE(2)NAME
pipe - create an interprocess channel
SYNOPSIS
#include <u.h>
#include <libc.h>
int pipe(int fd[2])
DESCRIPTION
Pipe creates a buffered channel for interprocess I/O communication. Two file descriptors are returned in fd. Data written to fd[1] is
available for reading from fd[0] and data written to fd[0] is available for reading from fd[1].
After the pipe has been established, cooperating processes created by subsequent fork(2) calls may pass data through the pipe with read and
write calls. The bytes placed on a pipe by one write are contiguous even if many processes are writing. Write boundaries are preserved:
each read terminates when the read buffer is full or after reading the last byte of a write, whichever comes first.
The number of bytes available to a read(2) is reported in the Length field returned by fstat or dirfstat on a pipe (see stat(2)).
When all the data has been read from a pipe and the writer has closed the pipe or exited,read(2) will return 0 bytes. Writes to a pipe with no reader will generate a note sys: write on closed pipe.
SOURCE
/sys/src/libc/9syscall
SEE ALSO intro(2), read(2), pipe(3)DIAGNOSTICS
Sets errstr.
BUGS
If a read or a write of a pipe is interrupted, some unknown number of bytes may have been transferred.
When a read from a pipe returns 0 bytes, it usually means end of file but is indistinguishable from reading the result of an explicit write
of zero bytes.
PIPE(2)