linux - Grep multiple bash parameters -

i'm writing bash script shall search in multiple files.

the problem i'm encountering can't egrep undetermined number of variables passed parameters bash script

i want following:

given random number of parameters. i.e:

./searchline.sh b c 

do grep on first one, , egrep result rest:

grep "a" * | egrep b | egrep c 

what i've tried build string egreps:

for j in "${@:2}"; additionalsearch="$additionalsearch | egrep $j"; done  grep "$1" * "$additionalsearch" 

but somehow won't work, seems bash not treating "egrep" string egrep.

do guys have advice?

by way, side note, i'm not able create auxiliary file grep -f out of line guess. note, number of parameters passed bash script variable, can't egrep "$2" | egrep "$3".

thanks in advance.

fernando

a safe eval solution

#!/bin/bash  if [[ $# -gt 0 ]];     temp=("grep" "-e" "\"\$1\"" "*")     (( = 2; <= $#; ++i ));         temp=("${temp[@]}" "|" "egrep" "-e" "\"\$${i}\"")     done     eval "${temp[@]}" fi 

to run it:

bash script.sh b c