Say if I need to do this a lot:
cd ../../../../foo/sub1/bar/dest/
cd ../../../../foo2/sub1/bar/dest/
cd ../../../../foo3/sub1/bar/dest/
cd ../../../../foo/sub1/bar/dest/
Is there any faster way to not always typing ../../../../ so many times? Any creative ideas?
My free tier EC2 instance (ubuntu 11.04, created last year) is expired. I just created a new one (ubuntu 12.04), but found that the new EC2 cannot resolve any hostname. By checking /etc/resolv.conf.
The old one looks like:
domain ap-northeast-1.compute.internal
search ap-northeast-1.compute.internal
nameserver 172.16.0.23
Where the new one looks like:
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
Is the nameserver configuration not automatically set up now? How should I configure the nameserver, through the AWS console? Do I have to use Route 53? I would rather use a free solution if it's not too complicated to set up.
I am writing a script to create the source environment. Handling the PATH part is easy. Though how should I check if a program can be executed correctly when its path is added into PATH? Using which is not sufficient as it's only check the existence of the executable, not running it. What I got now is to check the version of the program (i.e. find -version) and check if the return message contains "command not found". It's not ideal. Is there a better way to do this?
Say if I need to run a command checkstatus --jobnumber 12345 to check the job status. The command prints out the info to standard output. Is there any way to run this command on shell repeatedly every minute? I wanted to see the latest job status.
There are several scheduling system (workload management system). Like SGE(Sun Grid Engine), LSF, PBS. Usually on a workstation, using 'qsub' command can put a job in a queue, then the scheduling system will take over from there. I got some questions:
It used to be able add this line connect to console:i:1 in .rdp file in Windows Server 2003. However it doesn't work in Windows Server 2008. Is this changed?
My scenario is to distribute several GB files from a staging server to tens of identical destination servers. Since rsync can do delta-transfer or incremental copy, I was wondering when rsync file to 1st dest server, can rsync export the delta-transfer result? And use import that result for rsync'ing to the rest of dest servers. In this case, staging server can save CPU time on re-calculating delta-transfer. Is this possible?
Number of files: 160
Number of files transferred: 49
Total file size: 2993222827 bytes = 2854 MB
Total transferred file size: 1847285024 bytes =1761 MB
Literal data: 69543644 bytes = 66 MB
Matched data: 1777741380 bytes = 1695 MB
File list size: 3088
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 1256178
Total bytes received: 70240527 = 67 MB
sent 1256178 bytes received 70240527 bytes 182157.21 bytes/sec =
0.17 MB/s total size is 2993222827 speedup is 41.87
Src folder: A.txt B.txt C.txt Dst folder: B.txt
Is there any way to let rsync only sync files in destination folder? So if A and B in source folder updated, rsync only copy B to destination folder?
My experimental network: 2 windows 7 PCs.
When using below commands trying to connect to PC2 (admin account with no password):
net use X: \\PC2\c$ /user:PC2\administrator
It will get:
System error 5 has occurred.
Access is denied.
However, if set a password to PC2 admin account, and do below:
net use X: \\PC2\c$ /user:PC2\administrator mypwd
This will work.
Is it necessary to have the password set to enable windows file sharing?
Is there any alternative utility to replace PsExec? If I mostly use batch script for automation work. Due to instability of psexec, like hanging/ not responding, I may need another solution. Can the community advise, thanks.
EDIT: I have 2 particular issues with psexec.
https://superuser.com/questions/168706/cant-start-program-by-psexec-on-windows-server-2003-64-bit
I have a ASP.NET web service which only invoking psexec from remote SOAP API calls. Everyday when I check, I can see 10-20 psexec hanging in task manager. During the peak time, the web server receives about 1-5 requests, but it probably lasts for only 5 minutes. Below is my code.
Process psexecProcess = new Process();
ProcessStartInfo psi = new ProcessStartInfo("PsExec.exe");
string psexecArg = "-u " + GetRemoteAccount(serverType)
+ " -p " + GetRemotePW(serverType)
+ " \\\\" + GetManagementServerIP(serverType)
+ " C:\\MyBatchScript.bat " + username;
//set process options
psi.UseShellExecute = false;
psi.RedirectStandardOutput = true;
psi.RedirectStandardError = true;
psi.RedirectStandardInput = true;
psi.WindowStyle = ProcessWindowStyle.Hidden;
psi.CreateNoWindow = true;
psi.Arguments = psexecArg; //set psExec command
psexecProcess.StartInfo = psi;
psexecProcess.Start(); //run PsExec
StreamReader reader1 = psexecProcess.StandardError;
string result1 = reader1.ReadToEnd();
StreamReader reader2 = psexecProcess.StandardOutput;
string result2 = reader1.ReadToEnd();
psexecProcess.WaitForExit();
So that why I feel so frustrated with psexec.Can the community help me find anything wrong with both of these issues? Please advise, thanks.
EDIT2: I also need an alternative for 64-bit servers (for Windows Server 2003 64-bit).
To separate regular commands in Unix is to put semicolon in the end like this:
cd /path/to/file;./someExecutable;
But it seems not working for commands like this:
./myProgram1 > /dev/null &
./myProgram2 > /dev/null &
=>./myProgram1 > /dev/null &;./myProgram2 > /dev/null &;
Is there any way separate these kind of commands?
Also, if are below 2 cases are equivalent if I copy paste to command prompt? Thanks.
cd /path/to/file;./someExecutable;
cd /path/to/file;
./someExecutable;
on Windows XP/server 2003
When telnet some remote host on a specified port, after connection established, sometimes press ctrl+] doesn't quit. Is there any command can quit instead of just close the command line window? Thanks.
EDIT: But sometimes even type ctrl + ], telnet command line doesn't show up, still stuck at the blank screen.
When using top/free to see memory usage in Unix, there're 'used/free/shared/buffers/cached' categories. What do those exactly mean? I've tried to look for a wiki but didn't find detail information. Please advise, thanks.
Is there any batch script or command line command that can do Windows Update automatically on multiple remote servers (maybe via psexec)? Not prefer using a VB script, but if there's one available, that's fine too. Thanks.
I set up my MediaWiki on a CentOS. In the first few months, it works fine and fast. But it seems gradually getting slower.
My wiki site has less than 50 pages, so it's a very small scale site. But it seems every first time when loading the page, it takes couple seconds for apache server to parse the php scripts. But the second time visit same page is instant since I configured MediaWiki's caching method as CACHE_ALL. I've also installed eAccelerator.
How to resolve this performance issue? Thanks.
EDIT: DB is MySQL.
In Windows, I go to command line and 'telnet ' to check the port. How to do the same in Unix?
It seems some people using 'tcpdump port ' commands. Is this monitoring the real time traffic? Thanks.
Is there good tool that can do same thing as windows 'mstsc' and also has some features, like save different session info, so don't need to remember difference IP/ID/pwd. Thanks.
EDIT: Since I can't directly RDP to remote hosts, instead, I have to RDP to a terminal server and RDP from their to my destination. Is there client that can relay my connection from local and pass through the terminal to the real destination?
I tried export HISTTIMEFORMAT='%D %T' but it seems the time stamp of commands executed before I set HISTTIMEFORMAT will be the time I logged in current session. Is this normal? Is there any way to check when did the previous command executed? Thanks.
Is there any way to save Wireshark capture options? So it can be reuse after restart Wireshark. Also, if the saved file is in plain text, it's possible to use scripts generating bunch of capture settings, such with different filter setting. Does anyone know? Thanks.
Can anyone suggest some useful MediaWiki extensions? I've installed PDF export, syntax highlight, file link protocol, submit in toolbar and enforce strong password. But I'm still eager to know any good/handy extensions.