This is an user contributed article.
Choosing the password is only the first step; you have got to remember it. You can not remember 100s of password at a time. However, with the help of a password manager, you can organize passwords, host names, and PIN codes.
Like most of you, I love using Firefox and explaining the advantages of Firefox to others who use other browsers. Unlike other browsers, Firefox has huge list of excellent add-ons that will satisfy almost all of your requirements in using a browser. Following are the list of 7 powerful Firefox password related add-ons that will make your life in managing passwords very safe, secure and easy under Mac OS X, Linux / UNIX and Windows operating system. Sysadmin because even developers need heroes!!!
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One of our regular reader asks:
Iâ€™d like to discover information about who is currently using the system. When a user logs in what files are updated in UNIX / Linux?
Linux / UNIX have utmp and wtmp files to keep login records. Following three files keeps track of all logins and logouts to the system.
=> /var/run/utmp : List of current login sessions.
=> /var/log/wtmp : Database of past user logins / previous login sessions.
=> /var/log/lastlog : Last logins information about users
How do I access login records files?
These are a binary log files, and grows linearly at its end. So you cannot view records using cat or other text based utilities. The file <utmp.h> declares the structures used to record information about current users in the file. This can be accessed using C programs or other specialized utilities:
- The utmp file is used and accessed by the following commands:
- The wtmp file is used and accessed by the following command:
- Man pages – ac(1), date(1), last(1), login(1), who(1), getutent(3), updwtmp(3), init(8), wtmp(5)
- Header file /usr/include/utmp.h