I have a doubt in file management chapter.
In this chapter we dicussed about file permission in that what is the difference between chmod (1) & chmod (2), & what does number 1 & 2 represent.
Dear Student, in all manual pages, the number in the brackets represents the section number. Section (1) lists all UNIX commands and executables. Section (2) lists all system calls. Section (3) lists all C library calls. ( Ex: fopen (3) versus open (2) ). Section (4) discusses header files, etc. You can check man man under Linux/Unix to see the summary.
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