Thanks for the all the help last evening on CRON jobs. It's now working.
Is it possible with cron to save a backup of a file to a different server or location? The idea being that if one host goes arse over tit, I'll have a backup of the DB on another server?
Many thanks,
Ed Ludlow (3 Replies)
Hi all,
I need to replace certain robots.txt files with an empty file. I use the following to find the files I want to empty out:
find /Sites -type f -name "robots.txt" -exec grep -il "STAGE" {} \;
(finds all robots.txt files which contain the string 'STAGE')
Now what do I add to this... (3 Replies)
Good morning. I have a piece of code that is currently taking multiple files and using the CAT.exe command to combine into one file that is then sorted in reverse order based on the 3rd field of the file, then displayed on screen. I am trying to change this so that the files are being combined into... (4 Replies)
hi everyone,
i am a newbie in shell programming. and i want to simply go through a text file that contains 3 "columns", split by ';'
customerID ; link-to-contract ; save-as-filename
so an example would simply look like this
now i want to loop through every line, and save the file from... (3 Replies)
Hello,
I am new to shell scripting. I need to write a shell script where i can grep the name of file ie. .sh file and log file from crontab -l.
#51 18 * * * /home/oracle/refresh/refresh_ug634.sh > /home/oracle/refresh/refresh_ug634.sh.log 2>&1
#40 17 * * * /home/oracle/refresh/refresh_ux634.sh... (1 Reply)
I am a newbie to Unix.
My default root user umask is set to 077 and I have the following crontab job to redirect al the backup output to the logfile of /backup/backup.xxxxx
00 10 * * 0 /usr/local/bin/backup.sh > /backup/backup.`date +\%Y\%m\%d` 2>&1
Since root default umask is 077, the... (2 Replies)
Hello Guys.
Please I would like to create empty files from a list
In file1 will be the followin values, so i will like to create for each name a empty file.
file1
2191off-r0.sps
2192off-r0.sps
2193off-r0.sps
2194off-r0.sps
2195off-r0.sps
So I need to get 5 empty files.
Thanks for... (7 Replies)
I am passing multiple files in awk & since one of the file is empty(say file3) so the same gets skipped & logic goes for toss. Need suggestion/help in checking and putting additional checks for the same
awk -F, 'FNR==1 {++filecounter}
filecounter==1 {KRL=$2;next}
filecounter==2... (8 Replies)
Hi,
i need help with a file creation of an output program. I've got a program that with #find creates an output for each files in a directory.
If i give this command :
-o spec$(date -u +%Y%m%dt%H%M)
it creates just one file, overwriting all the others since it is the creation date .... (2 Replies)
Discussion started by: Board27
2 Replies
LEARN ABOUT OSX
cron
CRON(8) BSD System Manager's Manual CRON(8)NAME
cron -- daemon to execute scheduled commands (Vixie Cron)
SYNOPSIS
cron [-s] [-o] [-x debugflag[,...]]
DESCRIPTION
The cron utility is launched by launchd(8) when it sees the existence of /etc/crontab or files in /usr/lib/cron/tabs. There should be no
need to start it manually. See /System/Library/LaunchDaemons/com.vix.cron.plist for details.
The cron utility searches /usr/lib/cron/tabs for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into
memory. The cron utility also searches for /etc/crontab which is in a different format (see crontab(5)).
The cron utility then wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current
minute. When executing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable
in the crontab, if such exists).
Additionally, cron checks each minute to see if its spool directory's modification time (or the modification time on /etc/crontab) has
changed, and if it has, cron will then examine the modification time on all crontabs and reload those which have changed. Thus cron need not
be restarted whenever a crontab file is modified. Note that the crontab(1) command updates the modification time of the spool directory
whenever it changes a crontab.
Available options:
-s Enable special handling of situations when the GMT offset of the local timezone changes, such as the switches between the standard
time and daylight saving time.
The jobs run during the GMT offset changes time as intuitively expected. If a job falls into a time interval that disappears (for
example, during the switch from standard time) to daylight saving time or is duplicated (for example, during the reverse switch),
then it is handled in one of two ways:
The first case is for the jobs that run every at hour of a time interval overlapping with the disappearing or duplicated interval.
In other words, if the job had run within one hour before the GMT offset change (and cron was not restarted nor the crontab(5)
changed after that) or would run after the change at the next hour. They work as always, skip the skipped time or run in the added
time as usual.
The second case is for the jobs that run less frequently. They are executed exactly once, they are not skipped nor executed twice
(unless cron is restarted or the user's crontab(5) is changed during such a time interval). If an interval disappears due to the GMT
offset change, such jobs are executed at the same absolute point of time as they would be in the old time zone. For example, if
exactly one hour disappears, this point would be during the next hour at the first minute that is specified for them in crontab(5).
-o Disable the special handling of situations when the GMT offset of the local timezone changes, to be compatible with the old (default)
behavior. If both options -o and -s are specified, the option specified last wins.
-x debugflag[,...]
Enable writing of debugging information to standard output. One or more of the following comma separated debugflag identifiers must
be specified:
bit currently not used
ext make the other debug flags more verbose
load be verbose when loading crontab files
misc be verbose about miscellaneous one-off events
pars be verbose about parsing individual crontab lines
proc be verbose about the state of the process, including all of its offspring
sch be verbose when iterating through the scheduling algorithms
test trace through the execution, but do not perform any actions
FILES
/usr/lib/cron/tabs Directory for personal crontab files
SEE ALSO crontab(1), launchctl(1), crontab(5), launchd.plist(5), launchd(8)AUTHORS
Paul Vixie <paul@vix.com>
BSD June 17, 2007 BSD