Add Line Numbers
Use this command to add line numbers to a text file…
sed = filename.txt | sed 'N;s/\n/\t/' > filename_number.txt
Use this command to add line numbers to a text file…
sed = filename.txt | sed 'N;s/\n/\t/' > filename_number.txt
Use this command to download numbered content…
for ((i=1; i<9; i++)) ; do wget "http://www.example.com/$i.txt" ; done
This is how you zero pad a numerical variable in bash.
for ((x=1;x<=31;x+=1)); do echo `printf "%02d" $x`; done