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#include <unistd.h>
#include <stdio.h>
int main()
{
const char* file1 = "access.cpp";
const char* file2 = "access1.cpp";
printf("%s:%d\n", file1, access(file1, F_OK));
printf("%s:%d\n", file2, access(file2, F_OK));
return 0;
}
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access.cpp:0
access1.cpp:-1
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sudo passwd root
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cp Îļþ /usr/src
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2.¸´ÖÆtestcµ½/usr/local/test/
3.±àдÎļþ/etc/init.d/testc.sh
testc.sh
--------------------begin(not included)-----------------------
#! /bin/sh
#
### BEGIN INIT INFO
# Provides: &nbs ......
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configure: error: Unable to find libgd.(a|so)
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wget http://www.boutell.com/gd/http/gd-2.0.11.tar.gz
tar zxvf gd-2.0.11 ......