What
is ‘ps’ command stands for?
The
ps command prints the process status for some or all of the running
processes. The information given are the process identification
number (PID),the amount of time that the process has taken to execute
so far etc
What do you mean by File System ?
File System is a method to store and organize files and directories on disk. A file system can have different formats called file system types. These formats determine how the information is stored as files and directories.
File System is a method to store and organize files and directories on disk. A file system can have different formats called file system types. These formats determine how the information is stored as files and directories.
What
is tmpfs File System ?
tmpfs is a common name for a
temporary file storage facility on many Unix-like operating systems.
It is intended to appear as a mounted file system, but stored in volatile memory instead of a persistent storage device. RAM disk also appears as a virtual disk drive and hosts a disk file system.
It is intended to appear as a mounted file system, but stored in volatile memory instead of a persistent storage device. RAM disk also appears as a virtual disk drive and hosts a disk file system.
Everything stored in tmpfs is
temporary in the sense that no files will be created on the hard
drive; however, swap space is used as backing store in case of low
memory situations. On reboot, everything in tmpfs will be lost.The memory used by tmpfs grows and
shrinks to accommodate the files it contains and can be swapped out
to swap space.
What is the command
to change user password expiration time?
CHAGE
What is the command
used for changing the attributes of any file ?
chattr
What
is the command to check ports running/used over local machine ?
netstat
-antp
Command
used to lock user password
usermod
-L username
What is the command
to check current runlevel ?
who
-r
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