linux - shell script concatenate with space two string -


i’ve shell script need provide following pattern in txt file

test0000 test0000@gmail.com test0001 test0001@gmail.com

and on until stop condition (10 in case...)

currently not working , tried following:

start=“test” email=“@gmail.com" start=0 stop=10   i=0 while [[ $i -le 10 ]]   printf "%s%10d\n" "$start” "$i" "\n" "$start” "$email"

any idea how resolve ? got error: "@gmail.com:" invalid number

you can use:

start='test' email='@gmail.com'  ((i=0; i<10; i++));     printf '%s%04d   %s%04d%s\n' "$start" $i "$start" $i "$email" done  test0000   test0000@gmail.com test0001   test0001@gmail.com test0002   test0002@gmail.com test0003   test0003@gmail.com test0004   test0004@gmail.com test0005   test0005@gmail.com test0006   test0006@gmail.com test0007   test0007@gmail.com test0008   test0008@gmail.com test0009   test0009@gmail.com

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