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lang-bash
"$1"and"$#"(see this great answer unix.stackexchange.com/a/171347). Secondly,echois sadly non-portable (particularly for-n), soprintf '%s\n' "$1"should be used instead.echo -neither, however I am not aware on any posix system whereecho "$1"would fail. Anyhow,printfis indeed more predictable - updated.last() { shift $(($# - 1));printf %s "$1";}