LINUX-Frequently used commands
|ls command Display a list of files in a directory|
|ls [Option] [path]|
|Displays the files and directories stored in the directory.
The ls command has a number of options which allow you to display information about files and directories in a variety of formats.
Use this if you want to see what files and directories are in the directory you are accessing (the current directory).
|Frequently used options|
|-l View file details
-t Sort files by timestamp (ascending)
-lt Sort and display file details by timestamp
-lrt Display file details in reverse order by timestamp
|Example: View file details.|
|$ ls -l ← Add "-l (lowercase el)" to the right of "ls" as an option
-rw-rw-r-- 1koro koro 0 Jan 27 02:48 data.dat
-rw-rw-r-- 1koro koro 0 Jan 27 02:48 out.txt
-rw-rw-r-- 1koro koro 0 Jan 27 02:48 test.dat
-rw-rw-r-- 1koro koro 0 Jan 27 02:49 tmp.dat
|Example: Replace multiple consecutive blank lines with a single blank line|
|$ cat -s temp1.txt ← Run it with the option "-s".
← A blank line becomes one line.