${(#)…}: Evaluate as character codes

Evaluates the resulting words as character codes and converts them into corresponding characters.

Links

• Zsh manual on parameter expansion flags

Examples

Print message using ASCII values

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# decimal ASCII values ascii=(72 101 108 108 111) echo ${(#)ascii} # hex ASCII values ascii=(0x57 0x6F 0x72 0x6C 0x64) echo ${(#)ascii}

Output:

1 2	H e l l o W o r l d