菜鸟求助 sed命令

ksly1227

通过sed命令把下面的行追加到  /etc/sysctl.conf
kernel.shmmni=4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default=262144
net.core.wmem_default=262144
net.core.rmem_max=262144
net.core.wmem_max=262144

yinyuemi

回复 1# ksly1227

1. sed -i '$a \
   
2. kernel.shmmni=4096\
   
3. kernel.sem = 250 32000 100 128\
   
4. fs.file-max = 65536\
   
5. net.ipv4.ip_local_port_range = 1024 65000\
   
6. net.core.rmem_default=262144\
   
7. net.core.wmem_default=262144\
   
8. net.core.rmem_max=262144\
   
9. net.core.wmem_max=262144\
   
10. ' file

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或者把要加入的内容存为一个文本txt

1. 
   
2. sed -i '$r txt' file
   

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yangyang1581

回复 2# yinyuemi
sed 里  $r
跟 r 有啥区别呀

失落之岛

$  最后一行

       r filename
              Append text read from filename.