CODEWITHSUNDEEP
bashsedawk
VAR121
VAR121

Reputation: 532

Rename the extension of huge number of files Bash

I want to change extension of large number of files,

Example: "ABC.dat.length.doc.fasta"

Desired: ABC.mat

Upvotes: 2

Views: 254

Answers (5)

Vijay
Vijay

Reputation: 67221

ls -1 *.dat.length.doc.fasta | nawk '{p=$0;gsub("dat.length.doc.fasta","mat");system("mv "p" "$0); }'

Upvotes: 0

Arnestig
Arnestig

Reputation: 2342

prename will do this easily for you. Uses regular expressions to locate and rename files.

prename 's/(.*)\.dat\.length\.doc\.fasta/$1.mat/' *.dat.length.doc.fasta

Upvotes: 1

Stephane Rouberol
Stephane Rouberol

Reputation: 4384

You can use bash parameter expansion in a for loop:

for file in *.length.doc.fasta
do
  mv "$file" "${file%dat.length.doc.fasta}"mat
done

Another way to do it:

for file in *.length.doc.fasta
do
  mv "$file" "${file%%.*}".mat
done

Upvotes: 5

imp25
imp25

Reputation: 2357

Alternatively to using bash or awk it is possible to use the rarely used command line tool rename:

rename .dat.length.doc.fasta .mat *.dat.length.doc.fasta

This replaces the first argument with the second argument for the files provided is subsequent arguments (here represented by the shell expansion of *.dat.length.doc.fasta).

Upvotes: 3

arutaku
arutaku

Reputation: 6087

You can do it in a single line using AWK:

ls -1 *.dat.length.doc.fasta | awk -F"." '{system("mv "$0" "$1".mat")}' -

Input:

$ ls
ABC.dat.length.doc.fasta
ABCD.dat.length.doc.fasta
ABCDE.dat.length.doc.fasta
do_not_touch.txt

Output:

$ ls
ABCDE.mat
ABCD.mat
ABC.mat
do_not_touch.txt

Upvotes: 0

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