grep 或 awk：匹配 alpha 前缀数字范围
[英]grep or awk : Match on alpha prefixed number range
问题描述
How would one match on a range of system names that are prefixed by letters?
如何匹配一系列以字母为前缀的系统名称？
Given: sfc30700 through sfc30900给定：sfc30700 到 sfc30900
Want all systems listed in file from sfc30750 to sfc30850 for example, and the sequence not fully populated.例如，希望文件中列出的从 sfc30750 到 sfc30850 的所有系统，并且序列未完全填充。
I did attempt to use egrep like so, however it returns an error.我确实尝试过像这样使用 egrep ，但是它返回一个错误。
cat mahinelist.txt | egrep ':[[:sfc:]]\{30750,30850\}:'
egrep: Invalid character class name
1 个解决方案
解决方案1
0 2021-12-29 20:06:41
This prints out all lines containing " sfc " directly followed by a number between " 30750 " and " 30850 ".这将打印出所有包含“ sfc ”的行，后跟“30750”和“ 30850 ”之间的数字。
$ cat file
sfcdd30784
sfc30689
word sfc30750 word
sfc30753
sfc30756
sfc30900
sfc30901
daw30900
$ awk '{ n=match($0,"sfc"); m=substr($0,n+3,5)*1;
if(m>=30750 && m<=30850){ print } }' file
word sfc30750 word
sfc30753
sfc30756
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