There are a few reliable ways to detect if the host is a VMWare guest. The ones below make the most sense. First choice: “vmware_guest” expression => returnszero(“/bin/grep -qi vmware /proc/scsi/scsi”,”noshell”); Second choice: “vmware_guest” expression => fileexists(“/usr/sbin/vmware-toolbox-cmd”);
Ever wanted to bulk-rename files in linux? Say all files have extention txt, and you want to rename them to doc. Here’s how 😉 for i in `ls *.txt` do mv ${i} ${i%.*}.doc done
I recently came across a default SLES installation which has the following $PATH: (truncated for clarity) /sbin:/usr/sbin/:${HOME}/bin:/bin:/usr/sbin/:/usr/local/bin ………. This at first glance appears as a security problem , as a malevolant user can add $HOME/bin/ls and a user can execute a different ls or other arbitrary command that does something totally different. However, changing the …
Evaluation order of $PATH variable and why its important to understand. Read More »
I installed owncloud today on my private unix webserver. Installation was fast & painless with Mysql backend, but sqlite somehow didn’t work. This program really is an awesome web application, as it allows you many things. It even intergrates my roundcube webmail client painlessly. -Mark.
Using tar and ssh to efficiently copy files preserving permissions This trick will tar a directory from a computer, but the file that it would normally create, is standard out, so it is redirected back to the script on the computer you are working on. The computer you are working on extracts the information directly, …
