Shell Usage Small record

Awk:gsub Replacement NETSTAT-TNPL | Gawk ' $NF ~/\/mongod$/{gsub (/.+:/, "", $4);p rint $4} ' |sort-n to replace all $4: End with empty shell array ${#ports [@]} #得出数组长度 ${ports[@]} = ${p Orts[*]} to derive the array value ${ports[@]:8} to get the array after 8 ${ports[@]::8} = ${ports[@]:0:8} to get the array of the first 8 ${ports[@]:1:8} to derive the array 2nd through 9th (take 8)

This article from "Good memory than bad writing" blog, please be sure to keep this source http://goooood.blog.51cto.com/5060201/1603935

Shell Usage Small record