bash shell命令查找进程ID并附加到它？
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shell command to find a process id and attach to it?
提问by Elias Bachaalany
I want to attach to a running process using 'ddd', what I manually do is:
我想使用“ddd”附加到正在运行的进程，我手动执行的是：
# ps -ax | grep PROCESS_NAME
Then I get a list and the pid, then I type:
然后我得到一个列表和 pid，然后我输入：
# ddd PROCESS_NAME THE_PID
Is there is a way to type just one command directly?
有没有办法直接输入一个命令？
Remark: When I type ps -ax | grep PROCESS_NAME, grep will match both the process and grepcommand line itself.
备注：当我输入时ps -ax | grep PROCESS_NAME，grep 将匹配进程和grep命令行本身。
采纳答案by paxdiablo
There is an easy way to get rid of the grep process:
有一种简单的方法可以摆脱 grep 进程：
ps -ax | grep PROCESS_NAME | grep -v ' grep '
(as long as the process you're trying to find doesn't include the string " grep ").
（只要您尝试查找的进程不包含 string " grep "）。
So something like this should work in a script (again, assuming there's only one copy running):
所以这样的事情应该在脚本中工作（同样，假设只有一个副本在运行）：
pid=$(ps -ax | grep | grep -v ' grep ' | awk '{print }')
ddd ${pid}
If you call your script dddproc, you can call it with:
如果您调用 script dddproc，则可以使用以下命令调用它：
dddproc myprogramname
Although I'd add some sanity checks such as detecting if there's zero or more than one process returned from psand ensuring the user supplies an argument.
尽管我会添加一些健全性检查，例如检测是否有零个或多个进程返回ps并确保用户提供参数。
回答by Paul R
As separate commands:
作为单独的命令：
% PID=`ps -ax | grep ${PROCESS_NAME} | grep -v grep | cut -d ' ' -f 1-2`
% ddd ${PROCESS_NAME} ${PID}
In one line:
在一行中：
% PID=`ps -ax | grep ${PROCESS_NAME} | grep -v grep | cut -d ' ' -f 1-2` && ddd ${PROCESS_NAME} ${PID}
回答by Kiran
Do this way -
这样做——
ddd PROCESS_NAME \`ps -ax | grep PROCESS_NAME | grep -v grep | awk '{print }'\`
回答by Casual Coder
ddd <process_name> `pgrep <process_name>`
回答by anish
you can use pggrep to find the process
您可以使用 pggrep 来查找进程
回答by Randy Proctor
You can use awk to both filter and get the column you want. The "exit" limits the ps results to the first hit.
您可以使用 awk 来过滤并获取所需的列。“退出”将 ps 结果限制为第一次命中。
function ddd_grep() {
ddd $(ps -ax | awk -v p="" ' == p { print ; exit 0; }');
}
ddd_grep PROCESS_NAME
You may have to adjust the columns for your ps output. Also you can change the ==to ~for regex matching.
您可能需要调整 ps 输出的列。您也可以将==to更改~为正则表达式匹配。
