Create answer.md

test

Author: ndugwahenry

answer.md

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+ # Answers
+ ## Exercise 1
+ QN 1. creating project directory
+```
+mkdir Exercise
+```
+QN 2. creating directories for a bioinformatics project
+```
+cd Exercise
+mkdir Bioinfo_project
+cd Bioinfo_project/
+mkdir Documents Data Scripts
+cd Data/
+mkdir Raw_data Processed_data
+```
+QN 3. downloading a fasta file
+```
+cd Raw_data
+wget https://raw.githubusercontent.com/kipkurui/IntroductoryLinux/master/Data/nrf1_seq.fa
+cp nrf1_seq.fa ../Processed_data/nrfi_seq_copy.fa
+```
+QN 4.
+```
+cd ../Processed_data
+grep '^>' nrfi_seq_copy.fa >sequence_names.txt
+```
+QN 5 Script file for QN 4.
+```
+cd ../../../Bioinfo_project/Scripts/
+nano extract_seq.sh
+```
+- type into the editor the following 
+```
+#!/usr/bin/env bash
+
+#Ascript for extracting the sequence headers in a fasta file
+
+
+grep "^>" ../../Bioinfo_project/Data/Processed_data/nrfi_seq_copy.fa > sequence_names.txt
+
+#move the file to processed data
+mv sequence_names.txt ../Data/Processed_data
+```
+- add execution rights to the file by running the following command
+```
+chmod +x extract_seq.sh
+```
+- Run extract_seq.sh file using the command bellow
+```
+./extract_seq.sh
+```
+
+
+
+- Click [here](https://github.com/ndugwa/intro_github/blob/main/henry.sh) to go extract_seq.sh