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1. ps ÏÂÁî

ps ÏÂÁî¿ÉÒÔÏÔʾÕýÔÚÔËÐеÄÀú³ÌÐÅÏ¢£¬°üÀ¨Â·¾¶¡£Ê¹ÓÃÑ¡Ïî -p Ö¸¶¨Àú³Ì ID£¬Ñ¡Ïî -o Ö¸¶¨ÒªÏÔʾµÄ×ֶΡ£

ps -p PID -o comm,args

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ps -p 1234 -o comm,args
/bin/bash /home/user/script.sh

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¸ÃÏÂÁÏÔʾÀú³Ì ID Ϊ 1234 µÄÀú³ÌµÄ·¾¶£¨/bin/bash£©ºÍ²ÎÊý£¨/home/user/script.sh£©¡£

2. lsof ÏÂÁî

lsof ÏÂÁî¿ÉÒÔÏÔʾ·­¿ªµÄÎļþºÍÀú³ÌµÄÏà¹ØÐÅÏ¢£¬°üÀ¨Â·¾¶¡£Ê¹ÓÃÑ¡Ïî -p Ö¸¶¨Àú³Ì ID¡£

lsof -p PID

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lsof -p 1234
COMMAND   PID USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
bash     1234 user   cwd    DIR      11,0    58543 /home/user
bash     1234 user   rtd    DIR      11,0    58543 /home/user/.config
bash     1234 user   txt    REG      8,1  2176876 58658 /home/user/script.sh

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¸ÃÏÂÁÏÔʾÀú³Ì ID Ϊ 1234 µÄÀú³Ì·­¿ªµÄËùÓÐÎļþ£¬°üÀ¨¿ÉÖ´ÐÐÎļþ£¨/home/user/script.sh£©¡£

3. procfs

procfs ÊÇÒ»¸öÐéÄâÎļþϵͳ£¬ÌṩÓйØϵͳºÍÀú³ÌµÄÐÅÏ¢¡£ÒªÉó²éÀú³ÌµÄ·¾¶£¬¿ÉÒÔ»á¼ûÒÔÏÂÎļþ£º

/proc/PID/cwd

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ʹÓà cat ÏÂÁî¿ÉÒÔ¶ÁÈ¡ÎļþµÄÄÚÈÝ£¬»ñÈ¡Àú³ÌµÄ·¾¶¡£

cat /proc/PID/cwd

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cat /proc/1234/cwd
/home/user

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¸ÃÏÂÁÏÔʾÀú³Ì ID Ϊ 1234 µÄÀú³ÌµÄÊÂÇéĿ¼£¨/home/user£©¡£

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