awk提取文件中包含匹配模式和可变数字的行

使用awk

awk   '/exon\s+[0-9]+\s+sequence/  {print $0}'  file

 grep -P 'exon\s+[0-9]+\s+sequence' file

awk -F'\t' '$2 ~ /exon [1-9][0-9]? sequence/' file

注意,用于 1-99 是 [1-9][0-9]? 不 [0-9][0-9]? 0 (以及 00 , 01

awk '$3 ~ /exon/' file

Tier 2  exon 10 sequence    xxxxx
Tier 1  exon 5 sequence aaaaa

鉴于:

awk 'BEGIN{FS="\t"; OFS="|"} $1=$1' file 
Tier 2|exon 10 sequence|xxxxx
Tier 2|full sequence|yyyyy
Tier 1|exon 5 sequence|aaaaa

(即,选项卡位于 | 在上面)

$ awk -F"\t" '$2~/exon[ ]+[0-9][0-9]?/' /tmp/file 
Tier 2  exon 10 sequence    xxxxx
Tier 1  exon 5 sequence aaaaa