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Updated the return type specification. #42

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Updated the return type specification. #42

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Updated the return type specification. 
Updated the return type of the `exit` syscall in the first chapter.
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@bai-wenchao
bai-wenchao committed Jun 22, 2024
commit 53c81617943461076c5fad133e72bc9f22c6b747
2 changes: 1 addition & 1 deletion unix.tex
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Expand Up @@ -136,7 +136,7 @@ \section{Processes and memory}
{\bf System call} & {\bf Description} \\
\midrule
int fork() & Create a process, return child's PID. \\
int exit(int status) & Terminate the current process; status reported to wait(). No return. \\
void exit(int status) & Terminate the current process; status reported to wait(). No return. \\
int wait(int *status) & Wait for a child to exit; exit status in *status; returns child PID. \\
int kill(int pid) & Terminate process PID. Returns 0, or -1 for error. \\
int getpid() & Return the current process's PID. \\
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