Recursively list all files in a directory Linux

find -follow -type f   à find all files recursively type file

ll –R  à long list recursively

ls –LR à List all recursively

tree –l  à tree structure  

find /dir -type f -follow -print| xargs ls –l   à file and list all files

Find and move list of file spread over diffrent location on a linux machine

#----------------------------------------------------------------#
#  USES : sh fileFinderMover.sh <filewithfilenames> <targetpath> #
#----------------------------------------------------------------#

#!bin/sh
for i in `cat $1`
do
path=`locate $i`
mv $path $2
echo $path
done


This script will seach for the file which give as list and will move to target location.

hadoop oiv : hadoop offline image viewer, get a list of all files on hadoop

Replace a word in file Linux Shell

sed -i 's/<word to replace>/<new word>/g'<filenametobereplacedin>

Eg:

sed -i 's/shashwat/shriparv/g'shashwat.txt

Better way to get a list of all files on Hadoop, using shell.

Hadoop provides an option OIV  that is offline image viewer, which can read the Hadoop image file and output it to a output file in human readable format.

Syntax and uses:

bin/hadoop  oiv –i <Hadoop image file name> -o <output file in human readable form>

Options with this command:

There is an additional option to output file format that is defined using switch –p <format>, the formats can be: -->