我想删除模式匹配后的所有行，但不包括模式匹配行。
在以下示例中，删除匹配“1450/pm2-hmc 2”模式后出现的所有行，而不删除模式匹配行ex：

/root/abhishek/HPC/2023-01-03-1440/pm1-hmc1.txt
/root/abhishek/HPC/2023-01-03-1440/pm1-hmc2.txt
/root/abhishek/HPC/2023-01-03-1440/pm2-hmc0.txt
/root/abhishek/HPC/2023-01-03-1440/pm2-hmc1.txt
/root/abhishek/HPC/2023-01-03-1440/pm2-hmc2.txt
/root/abhishek/HPC/2023-01-03-1445/pm0-hmc0.txt
/root/abhishek/HPC/2023-01-03-1445/pm0-hmc1.txt
/root/abhishek/HPC/2023-01-03-1445/pm0-hmc2.txt
/root/abhishek/HPC/2023-01-03-1445/pm1-hmc0.txt
/root/abhishek/HPC/2023-01-03-1445/pm1-hmc1.txt
/root/abhishek/HPC/2023-01-03-1445/pm1-hmc2.txt
/root/abhishek/HPC/2023-01-03-1445/pm2-hmc0.txt
/root/abhishek/HPC/2023-01-03-1445/pm2-hmc1.txt
/root/abhishek/HPC/2023-01-03-1445/pm2-hmc2.txt
/root/abhishek/HPC/2023-01-03-1450/pm0-hmc0.txt
/root/abhishek/HPC/2023-01-03-1450/pm0-hmc1.txt
/root/abhishek/HPC/2023-01-03-1450/pm0-hmc2.txt
/root/abhishek/HPC/2023-01-03-1450/pm1-hmc0.txt
/root/abhishek/HPC/2023-01-03-1450/pm1-hmc1.txt
/root/abhishek/HPC/2023-01-03-1450/pm1-hmc2.txt
/root/abhishek/HPC/2023-01-03-1450/pm2-hmc0.txt
/root/abhishek/HPC/2023-01-03-1450/pm2-hmc1.txt
/root/abhishek/HPC/2023-01-03-1450/pm2-hmc2.txt
/root/abhishek/HPC/2023-01-03-1455/pm0-hmc0.txt
/root/abhishek/HPC/2023-01-03-1455/pm0-hmc1.txt
/root/abhishek/HPC/2023-01-03-1455/pm0-hmc2.txt
/root/abhishek/HPC/2023-01-03-1455/pm1-hmc0.txt
/root/abhishek/HPC/2023-01-03-1455/pm1-hmc1.txt
/root/abhishek/HPC/2023-01-03-1455/pm1-hmc2.txt
/root/abhishek/HPC/2023-01-03-1455/pm2-hmc0.txt
/root/abhishek/HPC/2023-01-03-1455/pm2-hmc1.txt
/root/abhishek/HPC/2023-01-03-1455/pm2-hmc2.txt
/root/abhishek/HPC/2023-01-03-1500/pm0-hmc0.txt
/root/abhishek/HPC/2023-01-03-1500/pm0-hmc1.txt
/root/abhishek/HPC/2023-01-03-1500/pm0-hmc2.txt
/root/abhishek/HPC/2023-01-03-1500/pm1-hmc0.txt
/root/abhishek/HPC/2023-01-03-1500/pm1-hmc1.txt
/root/abhishek/HPC/2023-01-03-1500/pm1-hmc2.txt
/root/abhishek/HPC/2023-01-03-1500/pm2-hmc0.txt
/root/abhishek/HPC/2023-01-03-1500/pm2-hmc1.txt
/root/abhishek/HPC/2023-01-03-1500/pm2-hmc2.txt

我尝试用下面的命令，但它是删除匹配的模式行也.

sed '/1450\/pm2-hmc2/,$d' input.txt