Shell Programming and Scripting

sa17
sa18
sa19
sa20
sa21

17 18 19 20 21

ls sa*.txt|awk '{print substr($1,3)}'|sed  's/.txt//g'

ls sa*.txt|awk '{print substr($1,3)}'|sed  's/.txt//g' |tr '\n' " " <

$ ls
sa17  sa18  sa19  sa20  sa21
$ ls|while read f;do echo mv $f ${f#??} && echo 'MYSCRIPT' ${f#??};done
mv sa17 17
MYSCRIPT 17
mv sa18 18
MYSCRIPT 18
mv sa19 19
MYSCRIPT 19
mv sa20 20
MYSCRIPT 20
mv sa21 21
MYSCRIPT 21

ls|while read f;do mv $f ${f#??} && sar.sh ${f#??};done

find /var/adm/sa -type f -mtime +2 | grep sa[1-9] | while read f;do sar.sh ;done