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You can create directories, subdirectories and subsubdirectories in one swoop with the mkdir -p command (brace expansions) using the bash shell (3.0 or higher!).

mkdir -p...

regex="abx"; for file in *.cvs; do awk -v str=$regex '{if ($6==str) print $1,$3,$4}' $file >$file.out; done

Please follow this URL for info provided by Neo:

https://www.unix.com/members-only/111844-current-bits-system-awards-alpha-release.html

Hi Corona - nice code, but Pawan needs these lines concatenated, since this is DNA. Meaning, it is actually one long SINGLE string of information, he just broke it into 3 lines. So, if "GAT" is...

awk '{print $1 "_Fw " $2 "\n" $1 "_Rev " $3}' <input_file >output_file

@royalibrahim

cat testfile

AABBACC

grep -E '(.)\1(.)\2{1}\1(.)\3' < testfile
AABBACC

What he did was, he used grep similar to egrep with the -E option, and then used grouping () and back...