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1) ÔÚµ±Ç°Ä¿Â¼¼°Æä×ÓĿ¼ËùÓеÄ.cppÎļþÖвéÕÒ×Ö·û´®"example", ²»Çø·Ö´óСд;
2) ʹÓÃsedÃüÁî, ½«ÎļþxyzÖеĵ¥´ÊAAAÈ«²¿Ì滻ΪBBB;
3) ÓÃÒ»ÌõÃüÁî´´½¨aa bb ccÈý¸ö×ÓĿ¼
4) mount cdrom.isoÖÁ/dev/cdromĿ¼
5) ÉèÖÃulimitʹµÃ³ÌÐòÔÚSegment faultµÈÑÏÖØ´íÎóʱ¿ÉÒÔ²úÉúcoredump;
ÉèumaskΪ002, Ôòн¨Á¢µÄÎļþµÄȨÏÞÊÇʲô? £¨¸öÈË ¸Ð¾õ Õâ¸ö ´ð°¸Ôõô ûÓÐ -rw-r--r-- ÕâÒ»¸öÄØ£¿£©
A. -rw-rwr--
B. rwxrwx-w-
C. -------w-
D. rwxrwxr-x
1 grep -i -r example ./*.cpp
2 sed 's/AAA/BBB/g' xyz
3 mkdir -p aa/bb/cc
1).find . -name "*.cpp" -exec grep -Hni "example" {} \;
2).
content=`cat xyz`
echo $content | sed 's/AAA/BBB/g' > xyz
3). mkdir aa bb cc
5). ulimit -c unlimited
4 mount -t iso cdrom.iso /dev/cdrom
²¹³ä4ºÍ5
4£©sudo mount -o loop /path/to/cdrom.iso /dev/cdrom
5)µ±È»Ñ¡A
Îļþ£ºÐ½¨ºóµÄȨÏÞ£½666-umask
Ŀ¼£ºÐ½¨ºóµÄȨÏÞ£½777-umask
1 #grep -i -r example ./*.cpp
2 #sed 's/AAA/BBB/g ' xyz
3 #mkdir -p aa/bb/cc
4 #mount -o loop ./cdrom.iso /mnt/cdrom
5 C
ÉÏÃæµÚÈýÌ⣬aa bb &nbs
Ïà¹ØÎÊ´ð£º
C/C++ code:
char Time="2009-9-23";
FILE *fpOut=fopen("1.txt","w+");
if(fpOut==NULL)
return ;
fwr ......
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