The ps utility can get the process state. The process state code will contain the character + when running in foreground. Absence of + means code is running in background.…

File Permissions The "umask" command can be used to read or set default file permissions for the current user. The umask value is subtracted from the default permissions (666) to…

File and Directory The "pwd" command displays the current directory: [root@dg11 dbhome_1]# pwd /u01/app/oracle/product/19.0.0/dbhome_1 The "ls" command lists all files and directories in the specified directory. If no location is defined it acts on…