[英]Find and Extract value after specific String from a file using bash shell script?
我有一个包含以下详细信息的文件:file.txt
+----------------------------------------------------+
| createtab_stmt |
+----------------------------------------------------+
| CREATE EXTERNAL TABLE `dv.par_kst`( |
| `col1` string, |
| `col2` string, |
| `col3` int, |
| `col4` int, |
| `col5` string, |
| `col6` float, |
| `col7` int, |
| `col8` string, |
| `col9` string, |
| `col10` int, |
| `col11` int, |
| `col12` string, |
| `col13` float, |
| `col14` string, |
| `col15` string) |
| PARTITIONED BY ( |
| `part_col1` int, |
| `part_col2` int) |
| ROW FORMAT SERDE |
| 'org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe' |
| STORED AS INPUTFORMAT |
| 'org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormat' |
| OUTPUTFORMAT |
| 'org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat' |
| LOCATION |
| 'hdfs://nameservicets1/dv/hdfsdata/par_kst' |
| TBLPROPERTIES ( |
| 'spark.sql.create.version'='2.2 or prior', |
| 'spark.sql.sources.schema.numPartCols'='2', |
| 'spark.sql.sources.schema.numParts'='1', |
| 'spark.sql.sources.schema.part.0'='{"type":"struct","fields":[{"name":"col1","type":"string","nullable":true,"metadata":{}},{"name":"col2","type":"string","nullable":true,"metadata":{}},{"name":"col3","type":"integer","nullable":true,"metadata":{}},{"name":"col4","type":"integer","nullable":true,"metadata":{}},{"name":"col5","type":"string","nullable":true,"metadata":{}},{"name":"col6","type":"float","nullable":true,"metadata":{}},{"name":"col7","type":"integer","nullable":true,"metadata":{}},{"name":"col8","type":"string","nullable":true,"metadata":{}},{"name":"col9","type":"string","nullable":true,"metadata":{}},{"name":"col10","type":"integer","nullable":true,"metadata":{}},{"name":"col11","type":"integer","nullable":true,"metadata":{}},{"name":"col12","type":"string","nullable":true,"metadata":{}},{"name":"col13","type":"float","nullable":true,"metadata":{}},{"name":"col14","type":"string","nullable":true,"metadata":{}},{"name":"col15","type":"string","nullable":true,"metadata":{}},{"name":"part_col1","type":"integer","nullable":true,"metadata":{}},{"name":"part_col2","type":"integer","nullable":true,"metadata":{}}]}', |
| 'spark.sql.sources.schema.partCol.0'='part_col1', |
| 'spark.sql.sources.schema.partCol.1'='part_col2', |
| 'transient_lastDdlTime'='1587487456') |
+----------------------------------------------------+
从上面的文件中,我想提取 PARTITIONED BY 详细信息。
Desired output :
part_col1 , part_col2
并且这些 PARTITIONED BY 不是固定的,意味着它可能包含 3 个或更多的其他文件,所以我想提取所有 PARTITIONED BY。
PARTITIONED BY 和 ROW FORMAT SERDE 之间的所有值,删除空格“`”和数据类型!
你能帮我解决这个问题吗?
sed -nr '/PARTITIONED BY/,/ROW FORMAT SERDE/p' a.txt|sed -nr '/`/p'|cut -d '`' -f 2|xargs -n 1 echo -n " "
my $text = do { local $/; <DATA> };
my @partitioned = ();
$text=~s#PARTITIONED BY\s*\(([^\(\)]*)\)# my $fulcontent=$1;
push (@partitioned, $1) while($fulcontent=~m/\`([^\`]+)\`/g);
($fulcontent);
#egs;
print join "\, ", @partitioned;
Output:
部分_col1,部分_col2
当您的结果布局无关紧要时,您可以要求sed
考虑开始和结束标记之间的行,并且仅当可以在 2 个反引号之间找到字段时才打印这样的行。
sed -rn '/PARTITIONED BY/,/ROW FORMAT/s/.*`(.*)`.*/\1/p' file.txt
可以根据需要将结果组合成一行
printf "%s , " $(sed -rn '/PARTITIONED BY/,/ROW FORMAT/s/.*`(.*)`.*/\1 /p' file.txt) |
sed 's/ , $/\n/'
小 perl 脚本
$data
变量PARTITIONED BY (....)
,
use strict;
use warnings;
use feature 'say';
my $data = do { local $/; <> };
my $re = 'PARTITIONED BY \((.*?)\)';
$data =~ /$re/sg;
my @part = $1 =~ /`(.*?)`/sg;
say join ', ', @part;
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