ls -l /proc/4650/fd; lrwx------ 1 men men 64 8月 13 07:26 3 -> 'socket:[58468]' 这个socket:后面的一串数字58468是什么呢？其实是该socket的inode号 static char *sockfs_dname(struct dentry *dentry, char *buffer, int buflen) { return dynamic_dname(dentry, buffer, buflen, "socket:[%lu]", dentry->d_inode->i_ino); } /proc/net/tcp:sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode /proc/net/udp /proc/net/unix grep 58468 /proc/net/tcp; 13: 0501A8C0:8284 0501A8C0:270F 01 00000000:00000000 00:00000000 00000000 1000 0 58468 1 ffff9c614065a300 20 0 0 10 -1