## details ### Instructions Create a script `details.sh` that does the following: - Change the size of the `file1.txt` to "1000". For example: - Change the permissions of the `file1.txt` form this: - Update the both Modification and Access time of the `file1.txt` to "2022-01-01". `-rw-rw-r-- 1 user user 0 dez 27 12:25 file1.txt` to this: `-rw------- 1 user user 0 dez 27 12:25 file1.txt` ### Usage ```console $ stat file1.txt File: file1.txt Size: 0 Blocks: 0 IO Block: 4096 regular empty file Device: ff01h/64769e Inode: 1839372 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ user) Gid: ( 1000/ user) Access: 2022-12-27 12:44:56.397966181 +0000 Modify: 2022-12-27 12:44:56.397966181 +0000 Change: 2022-12-27 12:44:56.397966181 +0000 Birth: - $ ./details.sh $ stat file1.txt File: file1.txt Size: 1000 Blocks: 0 IO Block: 4096 regular file Device: ff01h/64769e Inode: 1839472 Links: 1 Access: (0600/-rw-------) Uid: ( 1000/ user) Gid: ( 1000/ user) Access: 2022-01-01 00:00:00.000000000 +0000 Modify: 2022-01-01 00:00:00.000000000 +0000 Change: 2022-12-27 14:53:43.886486188 +0000 Birth: - $ ``` ### Hints Use the `stat` command to view the current details of the file, including the last modification time and size. ```console $ stat file.txt File: file.txt Size: 4030 Blocks: 8 IO Block: 4096 regular file Device: 801h/2049d Inode: 13633379 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 1000/ linuxize) Gid: ( 1000/ linuxize) Access: 2019-11-06 09:52:17.991979701 +0100 Modify: 2019-11-06 09:52:17.971979713 +0100 Change: 2019-11-06 09:52:17.971979713 +0100 Birth: - ``` The `touch` command's primary function is to modify a timestamp. Commonly, the utility is used for file creation, although this is not its primary function. The terminal program can change the modification and access time for any given file. The fundamental syntax for the touch command is: `touch ` Some of the touch Command Options: - `-a` Changes the access time. - `-d=` Changes a timestamp using a date string. - `-m` Changes the modification time. ```console $ touch test.txt $ ls -lu -rw-rw-r-- 1 user user 0 dez 27 12:13 test.txt $ touch -a test.txt $ ls -lu -rw-rw-r-- 1 user user 0 dez 27 12:20 test.txt $ touch -d tomorrow test.txt $ ls -l -rw-rw-r-- 1 user user 0 dez 28 2022 test.txt $ touch -m test.txt $ ls -l -rw-rw-r-- 1 user user 0 dez 27 12:25 testing.txt ``` Sometimes we need to remove the content of a file without deleting the file. For that Linux operating system offers a command called `truncate`. It is used to extend or reduce the file size. Truncating a file is much quicker and simpler without modifying the permissions and ownership of the file. ```console $ touch test.txt $ ls -l -rw-rw-r-- 1 user user 0 dez 27 12:13 test.txt $ truncate -s 100 test.txt $ ls -l -rw-rw-r-- 1 user user 100 dez 27 12:15 test.txt ``` > You have to use Man or Google to know more about commands flags, in order to solve this exercise! > Google and Man will be your friends!