Howto

Some quick tips on the recommended format of answers to interview questions.

Preparing for an interview can increase your self-confidence and reduce your risk, even if you never feel completely ready. Here are five key steps to help you get ready.

If you need for some reason to download a full website, wget is a nice tool to accomplish this. With “man wget” you can get a pretty good idea of all available features. I heard there is also a wget version for windows. Let us examine an example: -m stands for mirroring -k and -K convert the page with local links -E to convert to an html suffix –random-wait to add a random waiting period between requests wget -m -E -k -K -w 1 --random-wait -o logfile https://website_uri/path

You can disable directory browsing at several levels like everything else. In order to do that: Edit either the http.conf or a specific .conf file or the .htaccess file. If exists, look for “Option Indexes” Replace it or create a new line with “Options -Indexes”

After trying the gnome network configuration tool with little success, I tried the hardcore version, changing by hand the /etc/network/interfaces file again with little success. First search for your AP: iwlist eth1 scanning If you have a working wireless network adapter (eth1) and your AP in range, your configuration file should look something like this: auto eth1 iface eth1 inet dhcp wpa-driver wext wpa-ssid SSID wpa-ap-scan 1 wpa-proto WPA wpa-pairwise TKIP wpa-group TKIP wpa-key-mgmt WPA-PSK wpa-psk XXXXXXXXXXXXXXXXXXXXf4b3cff05d8ebf483435050268bxxxxxxxxxx Your key for wpa-psk can be generated using: ...

You can find it here: rpmfind.net/linux/rpm2html/search.php?query=&submit=Search+…&system=&arch=

In order to check the latest kernel version available just do this: finger @kernel.org And get an output similar to: [kernel.org] The latest stable version of the Linux kernel is: 2.6.22.4 The latest prepatch for the stable Linux kernel tree is: 2.6.23-rc3 The latest snapshot for the stable Linux kernel tree is: 2.6.23-rc3-git4 The latest 2.4 version of the Linux kernel is: 2.4.35.1 The latest 2.2 version of the Linux kernel is: 2.2.26 The latest prepatch for the 2.2 Linux kernel tree is: 2.2.27-rc2 The latest -mm patch to the stable Linux kernels is: 2.6.23-rc2-mm2

First install smbmount that should be on smbfs package, for Debian use something like: sudo apt-get install smbfs To try and access, create a new mounting point and connect: sudo mount -t smbfs -o username=<user>,workgroup=<domain> //winserver/share1 /share /share1 To make it permanent add this line to your /etc/fstab as root: //winserver/share1 /share/share1 smbfs credentials=/home/user/credentials,uid=user,gid=user,dmask=700,fmask=700 0 0 In order to avoid having passwords on your fstab create a file /home/user/credentials like this: ...

Tired of “time wget”, apache has a simple stress tool “apache benchmark” that goes like this: ab -kc 10 -t 10 -v 4 -A user:pass "https://uri/dir/file?param=x" > ab_result.txt

Filter invalid email addresses using shell script: Check for valid domain names cat email_addr.txt | cut -d "@" -f 2 | sort -u| xargs -I {} host -t MX '{}' | grep "not found"; Check for email address RFC compliance cat email_addr.txt | egrep "^[a-Z0-9,\!\#\$\%\&'\\*\+/=\?\^\\_\`\{\|\}\~\-]+(\.[a-Z0-9,\!\#\$\%\&'\\*\+/=\?\^\_\`\{\|\}\~\-]+)\*@[a-Z0-9-]+(\.[a-Z0-9-]+)\*\.([a-Z]{2,})$"