Hi all
I did something incorrectly about link command.
I try to make a link from a sub-dir to root dir, but I use the following command:
link / zzz
the result is sub-dir "zzz" was linked to "/"
Then I want to remove the "zzz" by using unlink command:
unlink zzz
It say that "Device... (1 Reply)
Hello all,
I have a script which runs every 15 minutes and moves all but latest 10 files from a directory (A) to Directory (B).
Most of the times this job runs fine but sometimes it is giving "mv: cannot unlink {Target Directory name } : Permissions denied."
Any help about this error msg... (1 Reply)
hi, I have a problem. I've done a lil program which gets from the server the given persons username a personal folder. I made it with a pipe calling popen with a command, but how can i make the same thing using fifo. I make the fifo with mkfifo() func. and than what. How do I tell the sertver using... (3 Replies)
Hi,
I have a two lines of code both intend to perform the same task.
unlink $CtrFile;
system ("rm $CtrFile");
Both of which try to delete a certain file. However when I use the unlink command the file does not get deleted. When I use the "rm" system... (2 Replies)
I was trying to remove a symbolic link of /etc/hosts to /etc/inet/hosts
well i forgot the command and in the /etc directory i did unlink inet and now i can not get into inet and it does not exist in /etc
1) what do i do to fix the inet directory
2) how do i link /etc/hosts to... (1 Reply)
I had a directory like A/B/C and these are all what I did.
cd A/B/C
ln -s some_path/some_sub_dir/C/* .
After this, I have around say 1000 files linked to my A/B/C directory. How can unlink all those files at one shot? The unlink command requires filename as an argument but what I need is to... (1 Reply)
Hello,
I have a set of directories, which has inside them, symbolic links to some files. What i would like to do is to covert the links into actual files, i.e. remove the link and copy the actual file here...
I tried to see unlink command but i think all it does is delete the link, is... (2 Replies)
Hello ,
I am working on unix FIFO IPC. i have a doubt regarding that.
If the fifo is updated(write()) through one process....can we able to send any signal that fifo is updated and ready to get read...to other process.?? (0 Replies)
I wish to unlink multiple links, but man pages shows
unlink - call the unlink function to remove the specified file
let's linked are in number sequence and I'm doing
unlink `echo {1..500}`
This fails..
Is their any other command to execute it or I need to call the unlink function that... (1 Reply)
Hi,
I have a dir and some files as below (all have full perm)
drwxrwxrwx 2 sam sam 4096 Aug 8 04:31 /home/sam/test
$ ll /home/sam/test
-rwxrwxrwx 1 sam sam 0 Aug 8 04:31 b1_2013_file.txt
-rwxrwxrwx 1 sam sam 0 Aug 8 04:31 c1_2014_file.txtI want to go to this directory and delete the... (2 Replies)
Discussion started by: sam05121988
2 Replies
LEARN ABOUT SUNOS
cron
cron(1M) System Administration Commands cron(1M)NAME
cron - clock daemon
SYNOPSIS
/usr/sbin/cron
DESCRIPTION
cron starts a process that executes commands at specified dates and times.
You can specify regularly scheduled commands to cron according to instructions found in crontab files in the directory
/var/spool/cron/crontabs. Users can submit their own crontab file using the crontab(1) command. Commands which are to be executed only once
can be submitted using the at(1) command.
cron only examines crontab or at command files during its own process initialization phase and when the crontab or at command is run. This
reduces the overhead of checking for new or changed files at regularly scheduled intervals.
As cron never exits, it should be executed only once. This is done routinely by way of the svc:/system/cron:default service. The file
/etc/cron.d/FIFO file is used as a lock file to prevent the execution of more than one instance of cron.
cron captures the output of the job's stdout and stderr streams, and, if it is not empty, mails the output to the user. If the job does not
produce output, no mail is sent to the user. An exception is if the job is an at(1) job and the -m option was specified when the job was
submitted.
cron and at jobs are not executed if your account is locked. Jobs and processses execute. The shadow(4) file defines which accounts are not
locked and will have their jobs and processes executed.
Setting cron Jobs Across Timezones
The timezone of the cron daemon sets the system-wide timezone for cron entries. This, in turn, is by set by default system-wide using
/etc/default/init.
If some form of daylight savings or summer/winter time is in effect, then jobs scheduled during the switchover period could be executed
once, twice, or not at all.
Setting cron Defaults
To keep a log of all actions taken by cron, you must specify CRONLOG=YES in the /etc/default/cron file. If you specify CRONLOG=NO, no log-
ging is done. Keeping the log is a user configurable option since cron usually creates huge log files.
You can specify the PATH for user cron jobs by using PATH= in /etc/default/cron. You can set the PATH for root cron jobs using SUPATH= in
/etc/default/cron. Carefully consider the security implications of setting PATH and SUPATH.
Example /etc/default/cron file:
CRONLOG=YES
PATH=/usr/bin:/usr/ucb:
This example enables logging and sets the default PATH used by non-root jobs to /usr/bin:/usr/ucb:. Root jobs continue to use
/usr/sbin:/usr/bin.
The cron log file is periodically rotated by logadm(1M).
FILES
/etc/cron.d Main cron directory
/etc/cron.d/FIFO Lock file
/etc/default/cron cron default settings file
/var/cron/log cron history information
/var/spool/cron Spool area
/etc/cron.d/queuedefs Queue description file for at, batch, and cron
/etc/logadm.conf Configuration file for logadm
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO svcs(1), at(1), crontab(1), sh(1), logadm(1M), svcadm(1M), queuedefs(4), shadow(4), attributes(5), smf(5)NOTES
The cron service is managed by the service management facility, smf(5), under the service identifier:
svc:/system/cron:default
Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The ser-
vice's status can be queried using the svcs(1) command.
DIAGNOSTICS
A history of all actions taken by cron is stored in /var/cron/log and possibly in /var/cron/olog.
SunOS 5.10 5 Aug 2004 cron(1M)