scripting - run a script in multiple folders in bash -

i have folder cabo_verde, , inside folder have several folders (001 300) several files each, this:

filename: cabo_verde

     001      2008.001.00.00.cvbr1.lhz.sac      2008.001.00.00.cvbr2.lhz.sac      ...       002      2008.002.00.00.cvbr1.lhz.sac      2008.002.00.00.cvbr2.lhz.sac      ... 

i want run script in each folder , did:

for dir in `ls $cabo_verde`;    subdir in `ls $cabo_verde/$dir`;          $(for file in *sac; sac <<eof echo on read $file chnhdr kcmpnm lhz write on quit eof done) done; done 

in end got

ls:cannot access /001: no such file or directory ls:cannot access /002: no such file or directory 

can me please?

thanks

as reliability aid, suggest writing , running scripts set -u, parameter name typo obvious.

you want run script in each directory, true? anyway...

you can either nest 2 loops this:

for d in cabo_verde/*/;   cd $d   f in *.sac;     sac ... $f   done done 

or can single loop this:

for f in cabo_verde/*/*.sac;   cd ${f%/*}   sac ... $f done 

of course, don't need loops @ all:

find cabo_verde -name \*.sac -execdir tool 

where tool script containing sac ... < $1