本文介绍如何使用Linux系统自带的功能来查看指定进程的各种信息，包括正在运行的可执行文件、打开的文件列表及完整的命令行参数等。通过这些命令，用户可以更深入地了解进程的状态及其资源占用情况。
If you want to see what executable the process 1234 is running:
ls -l /proc/1234/exe
If you want to see what files that process has open:
ls -l /proc/1234/fd
If you want to see the full command line with arguments:
tr '\0' '\n' </proc/1234/cmdline
If you prefer to use commands, lsof -p1234 shows all the files the process has open. ps uww 1234shows various pieces of information about process 1234 including the full command line.
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