2022年1月21日—TL/DR:ifyouusefd=open(...);toopenafile,youshoulduseclose(fd);tocloseit,butifyouusef=fopen(...);,thenyoushoulduse ...,close()closesafiledescriptor,sothatitnolongerreferstoanyfileandmaybereused.Anyrecordlocks(seefcntl(2))heldonthefile...

close(2): close file descriptor

close()closesafiledescriptor,sothatitnolongerreferstoanyfileandmaybereused.Anyrecordlocks(seefcntl(2))heldonthefileitwas ...

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