I need to modify my version of find in unix and get it to create and use two POSIX threads to carry out concurrent finding operations.
How do i get about doing this>?
If anyone could help me it would be much appreciated.
Thanx
Mariuca (1 Reply)
Hello,
My System Admin. just switched me from KSH to BASH and something happened to my "nedit" utility!
Does anyone know how to reactivate nedit by anychance?
Thanks very much!
BobK (2 Replies)
hi folks,
I want to select all files older than 13 days from a specified directory
for that i used
find /home/amar -name '*.*' -mtime 13
but it gives me all the files from subdirectories also, I dont want that
I want files only from /home/amar and not from /home/amar/abc/..
which... (8 Replies)
Hi Guys,
Do you know how can I find files with modificatioin time less than 30 MINUTES using the find utility?
Or if u have any other mechanism to find it using script, I'll appreciate it.
Thanks! (5 Replies)
To read/write to a DB from Java or Perl, you usually have to install/reference several drivers and write a whole bunch of boilerplate DB access code.
I'm curious if someone has written a command line utility for Unix/Linux for simple database access for the major providers, something like:
... (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:
Develop a utility that will enhance the current file management and
organization functions of Linux.
You... (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:
Please help about these script... i dont have a problem in option 1. But when it comes to options 2 and options 3... (2 Replies)
Hello everyone, I need to validate the file format for the UTF-8 standard. I know that "isutf8"utility is a part of "moreutils" pkg, I was able to find this package for the Linux but my environment in the AIX 6.1.
I would be greatly appreciate your suggestion to my search. I am not familiar with... (5 Replies)
Can I ask a question not related to original question. I have this below command running on a directory which contains thousands of files. This command runs for 5 minutes. Any files received in folder1 during the execution of command is getting moved, even though that file is just received and it's... (6 Replies)
Discussion started by: Super123
6 Replies
LEARN ABOUT LINUX
exec
EXEC(P) POSIX Programmer's Manual EXEC(P)
NAME
exec - execute commands and open, close, or copy file descriptors
SYNOPSIS
exec [command [argument ...]]
DESCRIPTION
The exec utility shall open, close, and/or copy file descriptors as specified by any redirections as part of the command.
If exec is specified without command or arguments, and any file descriptors with numbers greater than 2 are opened with associated redi-
rection statements, it is unspecified whether those file descriptors remain open when the shell invokes another utility. Scripts concerned
that child shells could misuse open file descriptors can always close them explicitly, as shown in one of the following examples.
If exec is specified with command, it shall replace the shell with command without creating a new process. If arguments are specified,
they shall be arguments to command. Redirection affects the current shell execution environment.
OPTIONS
None.
OPERANDS
See the DESCRIPTION.
STDIN
Not used.
INPUT FILES
None.
ENVIRONMENT VARIABLES
None.
ASYNCHRONOUS EVENTS
Default.
STDOUT
Not used.
STDERR
The standard error shall be used only for diagnostic messages.
OUTPUT FILES
None.
EXTENDED DESCRIPTION
None.
EXIT STATUS
If command is specified, exec shall not return to the shell; rather, the exit status of the process shall be the exit status of the program
implementing command, which overlaid the shell. If command is not found, the exit status shall be 127. If command is found, but it is not
an executable utility, the exit status shall be 126. If a redirection error occurs (see Consequences of Shell Errors ), the shell shall
exit with a value in the range 1-125. Otherwise, exec shall return a zero exit status.
CONSEQUENCES OF ERRORS
Default.
The following sections are informative.
APPLICATION USAGE
None.
EXAMPLES
Open readfile as file descriptor 3 for reading:
exec 3< readfile
Open writefile as file descriptor 4 for writing:
exec 4> writefile
Make file descriptor 5 a copy of file descriptor 0:
exec 5<&0
Close file descriptor 3:
exec 3<&-
Cat the file maggie by replacing the current shell with the cat utility:
exec cat maggie
RATIONALE
Most historical implementations were not conformant in that:
foo=bar exec cmd
did not pass foo to cmd.
FUTURE DIRECTIONS
None.
SEE ALSO
Special Built-In Utilities
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE /The Open Group 2003 EXEC(P)