Shell Programming and Scripting

awk '/^>/{print "\n"$0;n=0;next}{
 for(i=0;++i<=length($0);){
  c=substr($0,i,1)
    if(c!="Z"){(n==10?n=1:++n)
      printf (n==10?c"\n":c)}
}
 }' infile

# sed -e :jump -e 'N; s/\n//;bjump' tempZ_1 | sed 's/Z//g' | sed -e 's/\(..........\)/\1\n/g'
SAFSDAFDSG
GGERRTTASR
ARARETWETP
OASDAASASF
AS

# sed -e :jumpx -e 'N; s/\n//;bjumpx' temp_9 | sed 's/Z//g' | sed -e 's/\(..........\)/\1\n/g'
ASAEGPIOEO
EIOPIASFDF
GARAESEAAA
S

 awk '{if (/^>/||/^$/) {print $0} 
       else {gsub(/Z/,"",$0);printf $0}}' infile |fold -w 10