08-07-2013
Well basically you'll have to check the file's contents from time to time but using stat as the starting point would help save your disk from much IO.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I know that Unix is different from windows in that it needs more manual configuring but how do I get Solaris 8 (Intel version) to recognize my floppy drive and cd-rom??
I mean does it automatically detect the drives at startup and I have to mount them or do I have to create the drives somehow and... (1 Reply)
Discussion started by: eloquent99
1 Replies
2. UNIX for Dummies Questions & Answers
Hello all,
first of all, I apologise if I may ask stupid or obvious questions, but I'm new to UNIX and I think I need a little bit of help before I start gearing up :)
Anyway, I have installed a Solaris 8 on a Sun machine, and it has 2 physical disks in it. However, it seems that it is only... (7 Replies)
Discussion started by: dragunu
7 Replies
3. Programming
Hi. You may know how to detect when a interruption succeeded programming in C. Just like receiving a signal without blocking. Knowing when it was a keystroke (IRQ 2), or a mouse movement (12), or a disk access, etc. and getting actually for example the letter typed.
Thanks a lot. (7 Replies)
Discussion started by: Ashrentum
7 Replies
4. Shell Programming and Scripting
Hello,
I'd like to handle incoming (uploaded) files from a shell script, ideally without busy polling / waiting (e.g. running a cron task every 15'). Is there a command that would just sleep until a new entry has been created in a directory, allowing scripts such as the following:
while... (9 Replies)
Discussion started by: baldyeti
9 Replies
5. Shell Programming and Scripting
Hi All ,
I need a script to find errors in a particular and in a particular path
Actually in my logs i`ve so many kinds of errors(i can even say as 100 types also).if i run the script i need to know the error (some errors can aviod )
so finally the script o/p should be a numeric... (3 Replies)
Discussion started by: radha254
3 Replies
6. Shell Programming and Scripting
Hi,
I will name folders this way : DD-MM-YYYY (07-06-2011 for today).
DATE=`date +%d-%m-%Y`
mkdir $DATE
They will contain a backup of the day.
I want, in my backup script, add a command that will automatically delete folders that are a week old (in this case, when performing the backup of... (7 Replies)
Discussion started by: Always
7 Replies
7. Shell Programming and Scripting
How can view log messages between two time frame from /var/log/message or any type of log files.
when logfiles are very big and especially many messages with in few minutes, I would like to display log messages between 5 minute interval.
Could you pls give me the command? (1 Reply)
Discussion started by: johnveslin
1 Replies
8. Fedora
Hello world,
One of the servers, a Fedora one,rebooted today (Luckily, a testbox).
I tried to get the reason the server rebooted. After going through the messages, I think that the log entries just before and after reboot are missing.
Please below: (****** is the server name, for privacy... (0 Replies)
Discussion started by: satish51392111
0 Replies
9. Shell Programming and Scripting
is there a way to efficiently monitor logfiles that do not have a date or time format? i have several logs on several different servers that need to be monitored. but i realized writing a script for this would be very complex and time consuming giving the variety of things i need to check for i.e.... (2 Replies)
Discussion started by: SkySmart
2 Replies
10. Shell Programming and Scripting
Redirecting log files to null writing junk into log files.
i have log files which created from below command
exec <processname> >$logfile
but when it reaches some size i am redirecting to null while process is running like
>$logfile
manually but after that it writes some junk into... (7 Replies)
Discussion started by: greenworld123
7 Replies
LEARN ABOUT MOJAVE
tcl_stat
Tcl_Access(3) Tcl Library Procedures Tcl_Access(3)
__________________________________________________________________________________________________________________________________________________
NAME
Tcl_Access, Tcl_Stat - check file permissions and other attributes
SYNOPSIS
#include <tcl.h>
int
Tcl_Access(path, mode)
int
Tcl_Stat(path, statPtr)
ARGUMENTS
char *path (in) Native name of the file to check the attributes of.
int mode (in) Mask consisting of one or more of R_OK, W_OK, X_OK and F_OK. R_OK, W_OK and X_OK request checking
whether the file exists and has read, write and execute permissions, respectively. F_OK just
requests checking for the existence of the file.
struct stat *statPtr (out) The structure that contains the result.
_________________________________________________________________
DESCRIPTION
As of Tcl 8.4, the object-based APIs Tcl_FSAccess and Tcl_FSStat should be used in preference to Tcl_Access and Tcl_Stat, wherever possi-
ble.
There are two reasons for calling Tcl_Access and Tcl_Stat rather than calling system level functions access and stat directly. First, the
Windows implementation of both functions fixes some bugs in the system level calls. Second, both Tcl_Access and Tcl_Stat (as well as
Tcl_OpenFileChannelProc) hook into a linked list of functions. This allows the possibility to reroute file access to alternative media or
access methods.
Tcl_Access checks whether the process would be allowed to read, write or test for existence of the file (or other file system object) whose
name is pathname. If pathname is a symbolic link on Unix, then permissions of the file referred by this symbolic link are tested.
On success (all requested permissions granted), zero is returned. On error (at least one bit in mode asked for a permission that is
denied, or some other error occurred), -1 is returned.
Tcl_Stat fills the stat structure statPtr with information about the specified file. You do not need any access rights to the file to get
this information but you need search rights to all directories named in the path leading to the file. The stat structure includes info
regarding device, inode (always 0 on Windows), privilege mode, nlink (always 1 on Windows), user id (always 0 on Windows), group id (always
0 on Windows), rdev (same as device on Windows), size, last access time, last modification time, and creation time.
If path exists, Tcl_Stat returns 0 and the stat structure is filled with data. Otherwise, -1 is returned, and no stat info is given.
KEYWORDS
stat, access
Tcl 8.1 Tcl_Access(3)