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lang-bash
fishshell, not Bourne-like shells where the single quote quotes every character (backslash is not special within'...'). Note that infish,%is also a special character.fishworks, but my experience is that, insh,echo '\\'echoes\andecho '\''echoes'.echo '\\'outputs \ because yourechoexpands ANSI C escape sequences (someechoimplementations needecho -e '\\'for that).printf '%s\n' '\\'outputs \\.shdoes not identify a particular shell, there are and have been a lot of different and often incompatible shells calledsh.\'a special token inside a single-quoted character sequence?