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1answer
4k views

iptables prevents connection via ssh after port change despite ACCEPT rule

I have two machines hooked up to a router, one Windows with PuTTY, and one CentOS 6.4 with sshd and with the default SELinux still enabled. They can both ping each other successfully. I installed ...
2
votes
1answer
188 views

mpd daemon prematurely ending jobs

I am a little out of my depth here so bear with me. I am trying to configure mpirun and mpiexec to run software called Materials Studio on a 1 node, 2 processor, 12 core cluster. The submission scheme ...
2
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0answers
173 views

Shorter timeout on I/O errors MacOS X

How do you set a shorter timeout value for read/write I/O errors on MacOSX? We tend to get a few semicrashed disks and want to rsync the contents to a secure location, but when the file subsystem ...
7
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4answers
3k views

How to constraint time a program runs in Linux?

I have several simulations to do, each is invoked with python simulate.py <parameter list>. The problem with these simulations is that some of them hang without quiting, which prevents me from ...
5
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1answer
755 views

Too big delay with xscreensaver on wrong password in OpenSUSE 12.2

There is too big delay when logging in with xscreensaver in OpenSUSE 12.2 --- Actual delay is 10 seconds, but not found anywhere in configs Already done: checked pam timeout in login.defs (3 ...
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1answer
2k views

SSH to machines in new subnet - connection timeout

I'm using RHEL4 and RHEL5. A new group of Linux machines are setup recently using 172.16.32.0/24. The existing RHEL machines are running on 172.16.1.0/22 and 172.16.4.0/22. When I try to ssh from ...
7
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1answer
6k views

named does't start when using systemctl

I am having trouble getting named to start using systemd on the Fedora 18 Raspberry Pi spin. It starts, then a few moments later there is a timeout and it fails. If I run the commands in named.service ...
2
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2answers
6k views

What is the difference between ping -w and ping -W?

What is the -w (deadline) flag in ping for? I cannot find a description of it in the ping man page; only for -W, which takes seconds as a parameter. What is the difference between them, and how can I ...
3
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2answers
370 views

why slight delay after failed login in tty [duplicate]

Possible Duplicate: Why a wrong password gives a big delay Whenever I mistype my password when logging in in a tty, I have noticed that I have to wait for a second before I'm able to log in ...
3
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3answers
4k views

MySQL Linux Client Timeout/Keepalive

Is there a way to set a keepalive in the command-line MySQL client on Linux? Our network recently moved to a VLAN setup, and our systems department no longer has control of the firewall. The ...
2
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3answers
1k views

Timeout `idql` command in ksh

I probably read all the threads in almost all the forums for a solution to my need. I am a beginner in shell scripting and I dont have a perfect solution yet. Below is my code snippet. idql -n ...
6
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1answer
1k views

How to mount a Truecrypt container with a timeout from the command line?

I'm mounting a truecrypt container via the command line (i.e. truecrypt file dir). Is there any way to have truecrypt automatically unmount the container after a given amount of inactivity in dir?
2
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2answers
985 views

Timeout doesn't occur when reading from fifo using `read`

Look at this code: while read -t 3 line; do echo ${line} done < /opt/data.log data.log is a fifo. One process is writing to this, and this code should be reading it to show to the user. But ...
20
votes
5answers
34k views

How to introduce timeout for shell scripting?

I want to run a shell script that got a loop in it and it can go for ever which I do not want to happen. So I need to introduce a timeout for the whole script. How can I introduce a timeout for the ...
3
votes
1answer
431 views

How to disable timeout of password prompt for partition decryption during boot?

I have a computer running OpenSUSE 12.1, 64-bit, default install. How it works currently: I turn on the computer It goes through the boot process At some point during boot, I am asked for password ...
8
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3answers
12k views

mptscsih: ioc0: task abort: SUCCESS (rv=2002) causes 30 seconds freezing

I/O to my software RAID6 often freezes for around 30 seconds after which everything is back to normal. After the freeze is over this is put into syslog: Mar 14 18:43:57 server kernel: [35649.816060] ...
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1answer
2k views

Execute command for x seconds? [duplicate]

Possible Duplicate: Run a command for a specified time and then abort if time exceeds Is there a command which allows me to execute another command for at most x seconds? Imagined example: ...
20
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1answer
4k views

Run a command for a specified time and then abort if time exceeds

I want know how I can run a command for a specified time say, one minute and if it doesn't complete execution then I should be able to stop it.
3
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2answers
3k views

From shell, killing a process if wallclock runtime exceeds some predetermined value

I want to start a process from a shell script, allow it to interact with the user (so I cannot just background it, grab the PID, launch sleep followed by sanity checks and kill), but if it is still ...
3
votes
1answer
2k views

How to kill a command started over SSH - the SSH connection lost

If I use timeout 10 ssh -n -o BatchMode=yes 1.1.1.1 'sleep 20' > 1.1.1.1.txt 2>&1 & To give out a remote command on a server, and I kill the SSH connection after 10 seconds, then I ...
4
votes
3answers
423 views

Kill process when it stops to produce further output

Is there a shell tool which can probe if a subprocess is still producing output, and otherwise kill it after a specified timeout? I'm using offlineimap for Gmail backup, but that's very very very ...
7
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1answer
4k views

How long is a TCP local socket address that has been bound unavailable after closing?

On Linux (my live servers are on RHEL 5.5 - the LXR links below are to the kernel version in that), man 7 ip says: A TCP local socket address that has been bound is unavailable for some time after ...
38
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5answers
8k views

Timing out in a shell script

I have a shell script that's reading from standard input. In rare circumstances, there will be no one ready to provide input, and the script must time out. In case of timeout, the script must execute ...