Batch file rename where part of the old name became directories

Question

I don't know if this is possible using bash but it would be nice to be able to do this just using bash.

I receive bunch of files (regularly) with the following name pattern:

• xxx___yyy___abc__def.pdf
• xxxa___y_yy___fg-h___ijdfdak.pdf
• xx___v-vv___a_fasl-bk___os___23l.pdf
• etc.

And I need to rename and move them into directories:

• ~/xxx/yyy/abc/def.pdf
• ~/xxxa/y_yy/fg-h/ijdfdak.pdf
• ~/xx/v-vv/a_fasl-bk/os/23l.pdf

Is it possible? Please help.

Answer 1

Using parameter expansion.

#!/bin/sh

for f in *.pdf; do
  last=${f##*_} first=${f%%_*} 
  third=${f%$last*} third="${third%??*}"
  third=${third##*_} second=${f%$third*}
  second=${second%???*} second=${second##*_}
  echo mkdir -p ~/"$first/$second/$third" && \                                                                                                                                               
  echo mv -v "$f" ~/"$first/$second/$third/$last"
done

As per update of the OP's question. Should remove all underscores.

#!/bin/bash

for f in *.pdf; do
  new=$(awk -F'[_]+' -vOFS='/' '{$1=$1}1' <<< "$f")
  echo mkdir -p ~/"${new%/*}/" && \
  echo mv -v "$f"  ~/"$new"
done

• Remove the echo to actually rename the files.

The actual out put without the echo

copied 'xx___v-vv___a_fasl-bk__os23l.pdf' -> '/home/Pelangi/xx/v-vv/a/fasl-bk/os23l.pdf'
removed 'xx___v-vv___a_fasl-bk__os23l.pdf'
copied 'xxxa___y_yy___fg-h__ijdfdak.pdf' -> '/home/Pelangi/xxxa/y/yy/fg-h/ijdfdak.pdf'
removed 'xxxa___y_yy___fg-h__ijdfdak.pdf'
copied 'xxx___vvv___abk__osl.pdf' -> '/home/Pelangi/xxx/vvv/abk/osl.pdf'
removed 'xxx___vvv___abk__osl.pdf'
copied 'xxx___yyy___abc__def.pdf' -> '/home/Pelangi/xxx/yyy/abc/def.pdf'
removed 'xxx___yyy___abc__def.pdf'
copied 'xxx___yyy___fgh__ijk.pdf' -> '/home/Pelangi/xxx/yyy/fgh/ijk.pdf'
removed 'xxx___yyy___fgh__ijk.pdf'