Test if variable contains newline (POSIX) – unix.stackexchange.com

Test if variable contains newline (POSIX) – unix.stackexchange.com

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I know that some shells accept this kind of test: t() { [[ $var == *$'\n'* ]] && res=yes || res=no printf '%s ' "$res"; } var='ab cd' t var='abcd' t echo on execution: $ bash ...

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