ファイルディスクリプタ番号を指定して確認
lsof -d {{fd_num}}
実行例
# lsof -d 10 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME udevd 1518 root 10u 0000 0,11 0 5773 anon_inode dovecot 2366 root 10w FIFO 0,10 0t0 9735 pipe anvil 2391 dovecot 10u unix 0xffff88003ae5a580 0t0 9772 /var/run/dovecot/anvil-auth-penalty log 2392 root 10r FIFO 0,10 0t0 9819 pipe master 2463 root 10uW REG 202,1 33 668644 /var/lib/postfix/master.lock httpd 2479 root 10w REG 202,1 0 924056 /var/log/httpd/access_log httpd 2542 apache 10w REG 202,1 0 924056 /var/log/httpd/access_log httpd 2543 apache 10w REG 202,1 0 924056 /var/log/httpd/access_log httpd 2544 apache 10w REG 202,1 0 924056 /var/log/httpd/access_log httpd 2545 apache 10w REG 202,1 0 924056 /var/log/httpd/access_log httpd 2546 apache 10w REG 202,1 0 924056 /var/log/httpd/access_log tlsmgr 4422 postfix 10u 0000 0,11 0 5773 anon_inode httpd 7766 apache 10w REG 202,1 0 924056 /var/log/httpd/access_log sshd 9181 ec2-user 10u CHR 5,2 0t0 6493 /dev/ptmx
コマンド名を指定して確認
# lsof -c httpd COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME httpd 2479 root cwd DIR 202,1 4096 2 / httpd 2479 root rtd DIR 202,1 4096 2 / httpd 2479 root txt REG 202,1 528608 7718 /usr/sbin/httpd httpd 2479 root DEL REG 0,5 10366 /dev/zero httpd 2479 root DEL REG 202,1 110 /tmp/apc.P0sx1u httpd 2479 root mem REG 202,1 101616 802045 /usr/lib64/php/5.6/modules/memcache.so . . .
lsofコマンドがいない場合
ll /proc/{{pid}}/fd
