1. The earliest Chinese characters for yin and yang are found in inscriptions made on âoracle bonesâ (skeletal remains of various animals used in ancient Chinese divination practices at least as early as the 14th century B.C.E.).
There is no general way to hide files in unix/linux in the dos sense. But.... 1. You can put files in a directory and then chmod 700 directory. Now only the owner of the directory can see the files. This is the closest thing to a correct answer to the question. 2. If the file name starts with a dot, it is treated specially by the shells and by ls.
In order to password protect a PDF file using Adobe Acrobat: 1. Click âFileâ which is on the top horizontal toolbar. 2. Select âopenâ by scrolling down the drop-down list. 3. With the help of the browser window, password-protect the file that you wish to select.4. Go to the âSecurityâ tab in the properties dialogue box. 5. Select âPassword Securityâ in the top drop-down box instead of âNo Securityâ. Source: https://passwordprotectpdffile.com/how-to-password-protect-pdf-files/.. With the help of the browser window, password-protect the file that you wish to select. 4. Go to the âSecurityâ tab in the properties dialogue box. 5. Select âPassword Securityâ in the top drop-down box instead of âNo Securityâ.