You can use: printf ‘=%.0s’ {1..100} How this works: Bash expands {1..100} so the command becomes: printf ‘=%.0s’ 1 2 3 4 … 100 I’ve set printf’s format to =%.0s which means that it will always print a single = no matter what argument it is given. Therefore it prints 100 =s.
The most compatible way of doing this is using tput to discover the right sequences to send to the terminal: bold=$(tput bold) normal=$(tput sgr0) then you can use the variables $bold and $normal to format things: echo “this is ${bold}bold${normal} but this isn’t” gives this is bold but this isn’t
The following sends standard output to the null device (bit bucket). scriptname >/dev/null And if you also want error messages to be sent there, use one of (the first may not work in all shells): scriptname &>/dev/null scriptname >/dev/null 2>&1 scriptname >/dev/null 2>/dev/null And, if you want to record the messages, but not see them, … Read more
echo -e ‘ \t ‘ will echo ‘space tab space newline’ (-e means ‘enable interpretation of backslash escapes’): $ echo -e ‘ \t ‘ | hexdump -C 00000000 20 09 20 0a | . .|
Heredoc sounds more convenient for this purpose. It is used to send multiple commands to a command interpreter program like ex or cat cat << EndOfMessage This is line 1. This is line 2. Line 3. EndOfMessage The string after << indicates where to stop. To send these lines to a file, use: cat > … Read more
You can use these ANSI escape codes: Black 0;30 Dark Gray 1;30 Red 0;31 Light Red 1;31 Green 0;32 Light Green 1;32 Brown/Orange 0;33 Yellow 1;33 Blue 0;34 Light Blue 1;34 Purple 0;35 Light Purple 1;35 Cyan 0;36 Light Cyan 1;36 Light Gray 0;37 White 1;37 And then use them like this in your script: … Read more
Use printf instead: printf “hello\nworld\n” printf behaves more consistently across different environments than echo.