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  • Suppress Error Message of cp (copy)

    May 4, 2012 Respond

    There are times when you don’t need to know if the command you fired threw an error or not. That’s exactly what I needed in one of the systems I maintain. The copy command should not throw an error if there’s no file to copy. So instead of writing a number of lines for validations,…

  • Hide sqlldr Oracle Password in PS Command

    February 10, 2012 Respond

    Our internal audit team has raised an issue on some scripts exposing database user, password and tns. You see, all you need is an access to unix shell and run ps command and you’ll be able to get the user id and password of the database. On the otherhand, there’s not a lot of people…

  • How to Get The First File in Unix

    December 13, 2011 Respond

    In case you are looking files using ls or find command and only want to get the first file found, the command would be like. ls -l /any/path/filename*|sed -e ‘s///,/g’|awk -F “,” ‘{print $NF}’|head -1 Of course, you can also use it in find command. find /any/path/ -name “filename*” -type f|sed -e ‘s///,/g’|awk -F “,”…

  • How to Display Seconds in Unix File Timestamp

    December 11, 2011 Respond

    Apparently, there’s no native shell command to show the seconds portion of a unix file timestamp. The nearest to this functionality is stat. However, it’s not always available in unix systems. I’m using HP-UX and it’s not installed on our server. Instead, I needed to use a one-line perl program shown below. perl -e .foreach(@ARGV){$t…

  • SpotVPS First Impressions

    November 30, 2011 2

    After the unfortunate incident last week with NordicVPS, I decided to look for a new VPS host. As usual, I went to lowendbox and get the reviews in webhostingtalk. It’s there where I stumbled upon a promo from SpotVPS. As it turns out, SpotVPS is a low-cost VPS offering of ComfortHost.NET. And who are they?…

  • Apache Cannot Allocate Memory Problem

    July 23, 2011 Respond

    For the past month, I have been encountering some problems with my WordPress installation. I keep getting the Error 500. I checked the log files and here’s what I found. (12)Cannot allocate memory: couldn’t create child process: /opt/suphp/sbin/suphp for

  • Recursive setacl command on Linux/Unix

    June 24, 2011 Respond

    Setting access control list(acl) recursively is not as straigthforward in HP/UX. I believe the same is true for other Unix flavors. In case you are wondering how, the command is shown below.