UNIX Commands

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Term Definition
adduseradduser newuser command will create a new general user called newuser on your system, and to assign a password for the newuser account use passwd newuser.
 
catcat file.1

show contents of file.1 on screen

 
cat /proc/cpuinfo/proc/cpuinfo is a short, read-only, plain text file that contains information about the CPUs (central processing units) on a computer. It can easily be read with a command such as cat, i.e., cat /proc/cpuinfo
 
cat /proc/meminfo/proc/meminfo is one of the more commonly used files in the /proc/, as it reports a large amount of valuable information about the Linux system\'s memory.
 
cdcd dir.1

change directory to dir.1
 
chmod change the read, write, and execute permissions on your files.

chmod 777 * -R change permissions recursive all files.
 
compresscompress file.1

reduce the size of file.1 and replace it with a file named file.1.Z. This compressed file is NOT a (readable) ASCII file
 
cpcp file.1 file.2

copies file.1 to file.2. If file.2 exists, it is overwritten. Original file.1 is not removed
 
dateprint date and time
 
df -kprint list of disks and current capacity (in kilobytes)
 


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