Match multiple patterns in a file and then print their respective next line

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# 1  
Old 04-12-2011
Match multiple patterns in a file and then print their respective next line

Dear all,

I need to search multiple patterns and then I need to print their respective next lines. For an example, in the below table, I will look for 3 different patterns :

1) # ATC_Codes:
2) # Generic_Name:
3) # Drug_Target_1_Gene_Name:

# AHFS_Codes:
# ATC_Codes:
# Food_Interactions:
Not Available
# GenBank_ID:
Not Available
# Generic_Name:
# Drug_Target_1_GeneCard_ID:
# Drug_Target_1_Gene_Name:
And the required output would be :

My input file has these patterns many times, I mean to say that its a big file.

Thanks in advance
# 2  
Old 04-12-2011
awk '/# ATC_Codes:/ || /# Generic_Name:/ || /# Drug_Target_1_Gene_Name:/{getline; print}' file

# 3  
Old 04-12-2011
If the records you want to print are always right after the patterns:

sed -n '
/^# ATC_Codes:/ { n; p;}
/^# Generic_Name:/ { n; p;}
/^# Drug_Target_1_Gene_Name:/ { n; p;}
 ' infile

# 4  
Old 04-12-2011
$ ruby -ne 'puts gets if /atc_codes|Generic_name|drug_target_1_gene_name/i ' file

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