Information on the UNIX file system can be found in some magazines dedicated to technology such as Science Illustrated. Information can also be found on UNIX's official website.
The host file in Unix is usually located in the /etc directory.
Unix files do not rely on extensions, therefore there is no command to find them.
Look at the /etc/group file; this has all the groups and the members of each group.
All Unix systems provide a 'find' command that searches for specific files in a given directory. To find a file that has the word "foo" in the /usr directory, I would type: $ find /usr -name *foo* For more information, see 'man 1 find'.
This depends on the Unix/Linux system release; vendors may differ in how they log information. Typically, in a Linux distro you can find sshd authorization errors in auth.log. Other systems use syslog or syslog.log, depending on how they are configured. Check your system information to see what the exact log file is called in your environment.
With the command find . -type f -perm /o+w you may want to replace "." with a different directory in which to search.
OS-dependent.stat for unix, FindFirstFile for Windows.
It depends on what information you are looking for, and the exact Unix system you are using. Take a look at the 'man ps' command on your system to find out the switches that give the information you are most interested in looking at.
"gettimeofday" is a command used in Linux and Unix, thus not capitalized. If one wishes to find information on it, the person should look for a manual or a list of Linux/Unix commands with definitions.
There are many different types of Unix Certification depending on what your career goals are. Check out Unix.org to find out information on the different certifications and for great test prep materials and tips.
head - list beginning lines of a file tail - list ending lines of a file cut - eliminate columns of a file grep - find patterns of matches in files sed - make changes to selected lines in files
Configuration files are typically stored in the /etc directory. They can, of course, be anywhere the implementer wishes them to be as long as the process knows where to find them.