file1=`find . -name carpeta`
if [ -d $file1 ]
   then
   rename 's/carpeta/nueva_carpeta/' $file1
fi

#!/bin/sh

file1=`find -ls . -name carpeta`
if [ -d $file1 ]; then
   rename 's/carpeta/nueva_carpeta/' $file1
else
   echo "FILE NOT EXIST"
fi

#!/bin/sh

xxxxxx@xxxxxx-VirtualBox:~$ script paco
Script iniciado; el fichero es paco

#!/bin/env bash

for carpeta in $(find . -type d -name carpeta); do
    rename carpeta nueva_carpeta $carpeta
done

rename carpeta nueva_carpeta $(find . -type d -name carpeta)

rename carpeta nueva_carpeta $(find . -type d -name carpeta | sort -r)

#!/bin/sh
 rename carpeta nueva_carpeta $(find . -type d -name carpeta)

[$]: ### el script
[$]: cat find1.sh
#!/bin/sh
rename carpeta nueva_carpeta $(find . -type d -name carpeta 2>/dev/null | sort -r)
[$]: ### las carpetas
[$]: find . -type d -name carpeta 2>/dev/null
./backup/carpeta
./backup/carpeta2/carpeta
./carpeta
./carpeta/carpeta1/carpeta
[$]: ### ejecutamos el script
[$]: ./find1.sh
[$]: ### las carpetas
[$]: find . -type d -name *carpeta 2>/dev/null
./backup/carpeta2/nueva_carpeta
./backup/nueva_carpeta
./nueva_carpeta
./nueva_carpeta/carpeta1/nueva_carpeta
[$]: ### restauramos las carpetas
[$]: rename nueva_carpeta carpeta $(find . -type d -name nueva_carpeta 2>/dev/null | sort -r)
[$]: ### las carpetas
[$]: find . -type d -name *carpeta 2>/dev/null
./backup/carpeta
./backup/carpeta2/carpeta
./carpeta
./carpeta/carpeta1/carpeta

find . -depth -print0 -type d -name nombre_carpeta | xargs -0 rename nombre_carpeta nuevo_nombre {}

[$]: echo  "$(find . -type d -iname '*carpeta*' 2>/dev/null)"
./otra carpeta
./carpeta 1
./carpeta 1/carpeta
./carpeta
22
./carpeta
22/carpeta
[$]: find . -depth -type d -name "carpeta*" -print0 2>/dev/null | xargs -0 rename carpeta "Copia de carpeta" {}
[$]: echo  "$(find . -type d -iname '*carpeta*' 2>/dev/null)"
./Copia de carpeta 1
./Copia de carpeta 1/Copia de carpeta
./otra carpeta
./Copia de carpeta
22
./Copia de carpeta
22/Copia de carpeta
[$]: find . -depth -type d -name "Copia de carpeta*" -print0 2>/dev/null | xargs -0 rename "Copia de carpeta" carpeta {}
[$]: echo  "$(find . -type d -iname '*carpeta*' 2>/dev/null)"
./otra carpeta
./carpeta 1
./carpeta 1/carpeta
./carpeta
22
./carpeta
22/carpeta
[$]: find . -depth -type d -name $'carpeta\n22' -print0 2>/dev/null | xargs -0 rename $'carpeta\n22' "carpeta 22" {}
[$]: echo  "$(find . -type d -iname '*carpeta*' 2>/dev/null)"
./carpeta 22
./carpeta 22/carpeta
./otra carpeta
./carpeta 1
./carpeta 1/carpeta