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ls command
LINUX-Frequently used commands
| ls command Display a list of files in a directory |
| Ｓyntax |
| 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 total 16 -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. abc B. def C. ghi ← A blank line becomes one line. D. |