Red Hat :: Directing Cron Output To Terminal Screen?
Sep 7, 2010
I am trying to display a text using crontab. My settings :
*/2 * * * * /bin/echo "hello"
This setting sends a mail to the user, instead of displaying on the screen. Now tried changing the setting to:
*/2 * * * * /bin/echo "hello" > /dev/tty1
Now I can see the text on the screen, but this setting comes with a catch. What would happen if the user changes the terminal. for instance if he gets into tty2, he wont have write access on tty1. So the user gets a mail saying "permission denied". Is there any way that I can force the user to use a particular terminal or can a cron job be set in a way such that the user would get the text irrespective of the terminal he logs in.
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Oct 15, 2010
i got a bash script which can remind me my friends' birthday ,and i want run it as a cron job everyday,but the linux just emails me the output.Now my question is how to how to redirect the cron output to screen.
PS: when i run the script mannually ,it runs very well,so my script is good. And i have tried :
1.30 8 * * * root /home/birth.sh >/dev/console
it shows nothing
2. 30 8 * * * root /home/birth.sh >/dev/tty1
the same as 1
3. 30 8 * * * root /home/birth.sh >/dev/tty
it shows:/bin/sh: cannot create /dev/tty: No such device or address
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Jan 29, 2011
I have added some executable scripts to /etc/cron.daily but don't get the stdout/stderr output from them as mail (or anywhere else I have found). At least one of them is running (because I can see that it has added a file to the disk).
The peculiar thing is that I do get the output from /etc/cron.daily/0logwatch (part of the logwatch package) as an email each day.
The MAILTO line in /etc/crontab is "MAILTO=root" (unchanged from default). Same for /etc/anacrontab.
I do have an alias at the end of /etc/aliases which redirects root's mail to my own account, but this alias works fine for mail I send manually. (It also appears to work fine for the output from the file /etc/cron.daily/0logwatch.)
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Jul 6, 2010
Is there one command that will let me record an entire terminal session (with any possible errors) to a text file while also seeing all output on screen too? I know it can be done for individual commands, but I'm looking to do this for an entire session where the individual commands will be normal (i.e., not piped into tee, etc.). It would be even better if the command prompt is captured too. The obvious utility of this makes me think someone surely has come up with a solution long ago (probably in the 60's).(I'm sure it goes without saying, but subsequent output in that session should be appended to the file. The file should contain the full history, with all output and errors, of the session.)
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May 27, 2009
I' running awstats via
/etc/logrotate.d/httpd
prerotate
/usr/bin/awstats_updateall.pl -awstatsprog=/var/www/awstats/awstats.pl now
endscript
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May 31, 2010
I have the following shell:
export PATH=/u01/app/oracle/product/10.2.0/db_2/bin:/usr/sbin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin
ftp -u -v -n -i > /bk01/exports/FTP_OUTPUT.LOG <<EOF
open 197.0.0.78
user orabackup orabackup
cd /media/disco/BK_Oracle
bin
put FILE00001.LOG
put FILE00001.DMP
quit
EOF
Executing the shell from command line, the output is:
Connected to 197.0.0.78.
220 Bienvenido al servicio FTP del servidor backup.
530 Please login with USER and PASS.
530 Please login with USER and PASS.
331 Please specify the password.
230 Login successful.
250 Directory successfully changed.
200 Switching to Binary mode.
local: EXPO_APOT10G_20100531.LOG remote: EXPO_APOT10G_20100531.LOG 227 Entering Passive Mode (197,0,0,78,200,162) 150 Ok to send data. 226 File receive OK. 127498 bytes sent in 0.0022 seconds (5.7e+04 Kbytes/s)
local: EXPO_APOT10G_20100531.DMP remote: EXPO_APOT10G_20100531.DMP
227 Entering Passive Mode (197,0,0,78,175,141) 150 Ok to send data. 226 File receive OK. 458190848 bytes sent in 6.1 seconds (7.3e+04 Kbytes/s)
221 Goodbye.
Executing the shell from cron, the output is:
Connected to 197.0.0.78 (197.0.0.7.
220 Bienvenido al servicio FTP del servidor backup.
331 Please specify the password.
230 Login successful.
250 Directory successfully changed.
200 Switching to Binary mode.
local: EXPO_APOT10G_20100531.LOG remote: EXPO_APOT10G_20100531.LOG
local: EXPO_APOT10G_20100531.DMP remote: EXPO_APOT10G_20100531.DMP
221 Goodbye.
Why from cron the output no show the statistics in red ...?
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Apr 29, 2010
has no MTA (Postfix, Sendmail, Exim) installed so it can't email me the results of any cron job I schedule. I would then like to have the results from Cron be dumped into a small text file so I can read it later to view any issues.Right now my job is as follows:Code:01 18 * * * /usr/bin/shellscript.shAbove you see my script I want to run every day @ 6:01 pm. My question is what would the cron line look like if I wanted the results dumped into a random text file somewhere on my system?
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Jan 29, 2011
why sadc (a front end for sar data collection) would append a "?" to the output file when run from cron? And more particularly, how should I correct it? I have a RHEL 5.4 system which is doing this.e.g./usr/lib64/sa/sadc -d 10 6 /tmp/test produces output file /tmp/test when run from the command line but when run from cron the file produced is called "/tmp/test?"
Normal system logging with sysstat, which uses the same sadc command (with a couple of other options, and none of the options -d, -F, -L affect this behaviour), produces output files /var/log/sa/sadd where "dd" is the day of the month. There does not seem to be any control over this within the sysstat start-up scripts, other than use of option "-" to generate standard output files, so I expect that the dd is being done within the code. Is this associated with the "?" ?.Whatever is going on, the appended query seems to get added to everything as it still happens if I make the output file /tmp/test_$(/bin/date +\%d).Is this a bug or am I missing something fundamental about cron?
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May 29, 2011
I have a test socket on a server. If I connect to it using telnet, I get exactly the response I expect. So I know the socket works, and the script on the server works:
Code:
my-desktop:~$ telnet 192.168.1.1 3333
Trying 192.168.1.1...
Connected to 192.168.1.1.
Escape character is '^]'.
RAM: 90 % Free ( 2793 M free, 3082 M total)
Connection closed by foreign host. And if I script it, I get almost the same response from Telnet, but still a valid response from the socket. So I know that my script works:
[Code].....
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Dec 14, 2010
hello
I tried to find a good subject but it was the best of mine, anyway I'll explain it here.
some time I do some thing like installing a new application in Linux terminal of my office PC but it take a long time and I have to go home during its installation or configuration process that it is not good to cancel it.My current solution is abandoning the process until next day. I wanted to know is there any way to redirect an input and out put of a terminal to another one, if it works I can continue my abandoned process by ssh to my Linux office PC and redirect that terminal to my new remote sshed terminal from my home.
Thank a lot for any help.
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Jul 25, 2011
I have the following bash script...
Code:
#!/bin/bash
#Set filename for links
FILE=/home/andrew/scripts/links.txt
#pkill chrome
pkill firefox
[Code]...
When run it compares the public ip address against a file (ipAddress.txt) to basically determine if I am on my VPN or not. If I am not, i.e. it finds my public ip in the ipAddress.txt file it is supposed to exit otherwise it launches firefox with the given URL.
I have tested this by running from cmd line and running from the crontab. Running from the cmd line I can start the script, let it launch the first URL, then i disconnect from the VPN and the next time it goes through the loop it detects that my VPN has disconnected and kills the script. However, from the cron job if I have disconnected from the vpn I have found that it even though it finds my public ip address within the ipAddress.txt file it still marches right through to the next step in the script and launces the browser and will do this over and over.
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Feb 17, 2011
I'm really running into a wall trying to figure this out. I have a Bash script and narrowed down the one command that doesn't seem to work via cron and it's my pgp decrypting line. Works fine if I run the command via terminal but if I run it via cron it doesn't output anything.crontab -e shows the cronjob and it runs, creates the log file with no output. Is there maybe something I need to run as well? Permissions look set, unless the cron is running as a different user(was under the assumption if it showed up under crontab while logged into that user, then it would run as that user.
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Jan 24, 2010
if you do the command conky in terminal, it starts conky ofcourse, but it also shows output to that terminal so you can't do any other commands to that terminal, Is their an option like you can do with the '&' sign in other cases? If you do the '&' sign with conky it still gives output, also the conky -d command gives output...
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Jul 25, 2011
I've setup a LAMP server at home & i'm trying to get a webserver running. I'm having trouble finding information on how to "point" my domain at my IP.
The site is up & accessible. I own the domain, but I don't know where to go from here.
I believe I need to change the dns servers on godaddy, but what to?
Is there a free service which will update my IP when it changes?
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Jun 17, 2011
I am running a windows game on Ubuntu through Wine, but it is running slowly. My computer is only a year and a half old, and it has 4 GB's of RAM. Is Wine not receiving enough of the memory? If so, can I direct a larger amount of my ram to the program?
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Nov 5, 2009
I have a virtual server which I am hoping to host several sites on. Each of these sites is in its own subfolder in /var/www/http/ Problem is when I set up DNS records they can only point to the http folder itself. I suppose I can just redirect each domain to then go to the required subfolder, but I'd like to keep the URL the user sees as a simple xxxxx.com (without subfolder).
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May 28, 2010
Using CentOS. I have a cron setup to run this command: Code: /var/test.sh | mail -s "Test Cron" mr182@somewhere.com The email is sent but the output of the script is not in the email body, it's just blank. I know there is some output because there are some echo statements in the script.I don't want to get an email for all cronjobs, just this one.
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Aug 8, 2015
I have Apache setup on localhost with a wiki, ethercalc, etherpad and kanboard.
Wiki is on port 80, in /var/www/html so when someone enters domain into browser it comes up, which is what I want. It comes up lightning fast.
Problem is how to properly direct to other ports i.e. 8000, 8002 and 9001 for other applications. All others are in /usr/share.
I tried creating directories with .htaccess for each in /var/www/html, but if they even come up (kanboard completely unreachable) they are super slow, drop connection and usually don't render completely.
I've read that if you have access to Apache configuration .htaccess is wrong way to go and for security reasons app files shouldn't be directly located in /var/www/html?
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Nov 6, 2010
I'm using 10.04, and gnome-terminal GNOME Terminal 2.30.2 . I have irssi running on screen session on remote host. And I've been struggling for quite many days to configure it to produce either visual feedback or ring terminal's bell when I receive a private message or one of those that are highlighted.
My compiz settings window in General tab has 'Audible bell' checked.
My GNOME terminal has 'Terminal bell' checked.
I also added 'set bell-style audible' to my ~/.inputrc
And I also tried to manually load pcspkr module into my kernel.
No of the above helped or at least I haven't been able to notice any difference.
I also used some commands for irssi to produce bell sign.
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Apr 22, 2010
I have a favorite REXX program called fv2. When I was a Windows user I had an icon for fv2 on the Quick Launch bar. Click that icon, and the program ran. Now, as a Linux (Ubuntu) user it is necessary to go through several steps to run fv2.
1) Launch a terminal by clicking on the terminal icon at the top of the screen. What's that area called? The GNOME panel?
2) Enter: ~/Desktop/RexxScripts
3) Enter: regina fv2
I run fv2 several times per day and would really like to have the convenience of a clickable icon.
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Apr 13, 2010
I have been having troubles with having sound from my soundcard "M-Audio Firewire Solo" since I installed Ubuntu, more than 1 year ago.
Today, I have the sound from audacious 2 by using jack which means I can now listen music because audacious supports jack. what about other stuff?
I mean, forexample I cannot hear anything on ...... becouse firefox does not try to send the sound to the jack - or something like that I assume. So I think, there must be a way that I can hear all the sound that my computer produce. (welcome sound, pidgin sounds, video sounds, game sounds etc...)
So that, I am searching for a way that I can direct the whole sound to the JACK which can send the sound to my firewire soundcard and to my speakers.
OR
What the hell is FFADO - Mixer? Is this problem have something to do with that? do I need to use jack always in order to have sound ? I am not going to produce something on ubuntu - I do it with Win. so All I need is to use my soundcard as a regular soundcard
I am now using an upgraded version of vanilla ubuntu to studio Karmic.
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May 26, 2010
How can I make terminal applications immune to terminal emulator close, but still able to use all virtual terminal features?
egin{UPDATE}I want my terminal application remain alive and accessible if I accidentally close terminal emulator. This functionality is provided by screen and tmux, but they have issues with colors and they flush screen.Yes,I can run the shell inside screen, but I do not want the shell remain alive unless there is some other program running.
end{UPDATE}I see this must be something like screen, but without VT100 terminal emulation, something which will just apply whatever application does with "terminal proxy"'s terminal (like outputting something to stdout/stderr or using stty to set terminal options) to the terminal this proxy runs in.
// I know about screen and altscreen on, but it makes either this (screen with TERM=screen):
or this (screen with TERM=rxvt-unicode):
while I want this (rxvt-unicode without screen):
I have figured out that everything looks fine if I compile rxvt-unicode with USE=-xterm-color (in fact vim looks like on the second picture even without screen if I add this USE flag) and set TERM=screen-256color, but I do not like this workaround because it actually changes colors and I can't be sure that it will always change them only this way:
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Jun 7, 2010
I'm trying to setup a cron with screen. the purpose of running screen is because i want to resume to see the status of the job while it is running. anyone can enlighten me how i should setup my cron. I've tested with
00 14 * * * screen [command]
but the cron doesn't create a new screen.
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Nov 10, 2010
I can't use cron on server. But on the same server i can use screen. Is there any way (any program) to run something like cron in the screen session? Or any solution for that problem.
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Jan 10, 2011
What is the output of "date -u +%jXfce|sha256sum|sed 's/W//g'" if you run it in a terminal emulator?
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Sep 12, 2011
How can i get the RAM Memory on system in terminal when i have 3 GB with an output like this:
3072
or
3145728
[code]....
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Apr 17, 2010
I would like to capture all output spewed to a terminal session including processes that are terminated that were invoked from a script running in a terminal window. this is beyond capturing just stderr and stdout . for example
{
./script
} 2> stderr.cap 1>stdout.cap
if script is terminated (including because of memory violations) I get spewed output to the terminal I would like to capture that spewing to a file automatically or to a bit bucket /dev/null Is there another filehandle which can be redirected to do this? If so how or is there another way???
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Jun 19, 2010
I want to know how to get the current coordinates of the mouse outputted to terminal, for use in a bash script.
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Dec 9, 2010
In synaptic package manager when I expand "Details" tab (at the time when some software is installed or removed), I can see a terminal. I want to capture the output of terminal into a file. I tried to highlight and right click. But there is no context menu(copy, cut)
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Feb 15, 2011
I'd like to write a script that invokes a gnome-terminal session which slowly reads out text like the phosphor screensaver (could be anything, a log file, ascii art, song lyrics, whatev) and then closes. I can invoke a terminal using [gnome-terminal -e 'cat /var/log/dmesg'] but the output flies pass by too quickly.any way to slow it down? I know it seems like an odd request but if anyone has a suggestion I'd love to hear it.
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