First let's get the "find" right: We're looking for any executable file so we need to check User, Group and Other permissions for the Executable bit. Within the protected brackets of this command the two standalone "-o" switches mean "OR".
Now ... the output from "find" will be a straight list of filenames which does not mention the size of the file.
This question always confuses me :-
Suppose I write a program and compile it on a machine with operating system A and processor B
will the exe file run on a machine
with operating system A2 but processor B
operating system A but processor B2
operating system A2 and processor B2........
... (9 Replies)
Hi all ,
I need to call an executable (.exe) using shell script.
Actual need is i need to call that shell script and do an export of some tables
is there any way . the executable is datamover
Please let me know if there are any option !! (2 Replies)
hello.
My question, basically is: what is the definition of unix/linux exec files, or
what makes a file executable?
More specifically, must a unix source file that was compiled using gcc have exec permissions in order to be considered executable?
Is it right to say that a unix/linux exec file... (1 Reply)
Hi,
I have an executable file that has a rather long and tedious process to complete. How would I launch the executable using the shell, and then exit the shell while leaving the executable to run in the background? (1 Reply)
Hello every one, i want to convert my shell script into a binary executable a .exe file , is it possible to do that if so are there any tools . Would the script take off when the arguments are parsed.
Thanks
Venu (13 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
Hello all, I have posted here before and really was blown away by the amount of assistance I received. I was able to finish my homework without a problem! But, yet again, our... (6 Replies)
I would like to make a script that I can see if the file is executable. If it is executable then it needs to run. Otherwise, if it is not executable the file needs to be edited, and run agian.
I hope you understand what i mean. :)
Thanks for the netherlands (4 Replies)
Hi Friends,
I have a shell script which does some operations etc, would it be possible to create an executable file out from this shell script? meaning the executable file is not editable, thus the source code will not be visible to other users for copyright reasons.
Please help, thanks! (1 Reply)
Hello,
Cygwin will execute a shell script without turning on executable status on the file.
I want to force cygwin to be more like linux and not execute scripts directly on the command line unless changing mode to have executable status.
Is this possible?
Thanks
Larry (2 Replies)
Discussion started by: larrye0123
2 Replies
LEARN ABOUT PLAN9
open
OPEN(5) File Formats Manual OPEN(5)NAME
open, create - prepare a fid for I/O on an existing or new file
SYNOPSIS
Topen tag[2] fid[2] mode[1]
Ropen tag[2] fid[2] qid[8]
Tcreate tag[2] fid[2] name[28] perm[4] mode[1]
Rcreate tag[2] fid[2] qid[8]
DESCRIPTION
The open request asks the file server to check permissions and prepare a fid for I/O with subsequent read and write messages. The mode
field determines the type of I/O: 0, 1, 2, and 3 mean read access, write access, read and write access, and execute access, to be checked
against the permissions for the file. In addition, if mode has the OTRUNC (0x10) bit set, the file is to be truncated, which requires
write permission (if the file is append-only, and permission is granted, the open succeeds but the file will not be truncated); if the mode
has the ORCLOSE (0x40) bit set, the file is to be removed when the fid is clunked, which requires permission to remove the file from its
directory. If other bits are set in mode they will be ignored. It is illegal to write a directory, truncate it, or attempt to remove it
on close. If the file is marked for exclusive use (see stat(5)), only one client can have the file open at any time. That is, after such
a file has been opened, no other open will succeed until fid has been clunked. All these permissions are checked at the time of the open
request; subsequent changes to the permissions of files do not affect the ability to read, write, or remove an open file.
The create request asks the file server to create a new file with the name supplied, in the directory (dir) represented by fid, and
requires write permission in the directory. The owner of the file is the implied user id of the request, the group of the file is the same
as dir, and the permissions are the value of
(perm&(~0777|0111)) | (dir.perm&perm&0666)
if a regular file is being created and
(perm&~0777) | (dir.perm&perm&0777)
if a directory is being created. This means, for example, that if the create allows read permission to others, but the containing direc-
tory does not, then the created file will not allow others to read the file.
Finally, the newly created file is opened according to mode, and fid will represent the newly opened file. Mode is not checked against the
permissions in perm. The qid for the new file is returned with the create reply message.
Directories are created by setting the CHDIR bit (0x80000000) in the perm.
The names . and .. are special; it is illegal to create files with these names.
It is an error for either of these messages if the fid is already the product of a successful open or create message.
An attempt to create a file in a directory where the given name already exists will be rejected; in this case, the create system call (see
open(2)) uses open with truncation. The algorithm used by create is: first walk to the directory to contain the file. If that fails,
return an error. Next walk to the specified file. If the walk succeeds, send a request to open and truncate the file and return the
result, successful or not. If the walk fails, send a create message. If that fails, it may be because the file was created by another
process after the previous walk failed, so (once) try the walk and open again. For the behavior of create on a union directory, see
bind(2).
ENTRY POINTS
Open and create both generate open messages; only create generates a create message.
OPEN(5)