Brace expansion with range in fish shell

Question

In bash, I can do the following

$ echo bunny{1..6}
bunny1 bunny2 bunny3 bunny4 bunny5 bunny6

Is there a way to achieve the same result in fish?

Danged

As an aside for those less familiar with fish: fish does support brace expansion, but only with lists (e.g., echo b{ar,az}), not ranges. – Fossil

Answer 1

The short answer is echo bunny(seq 6)

Longer answer: In keeping with fish's philosophy of replacing magical syntax with concrete commands, we should hunt for a Unix command that substitutes for the syntactic construct {1..6}. seq fits the bill; it outputs numbers in some range, and in this case, integers from 1 to 6. fish (to its shame) omits a help page for seq, but it is a standard Unix/Linux command.

Once we have found such a command, we can leverage command substitutions. The command (foo)bar performs command substitution, expanding foo into an array, and may result in multiple arguments. Each argument has 'bar' appended.

Sidney

@chepner: It doesn't matter. fish shell automatically defines seq if it doesn't exist, as certain parts of fish source depend on it to exist. – Avertin

Since this is the first result for "fish brace expansion"... It is worth noting that fish does do simple brace expansion with commas. e.g. echo {foo,bar} or mkdir --parents /tmp/{folder1,folder2,folder3} results in /tmp/folder1, /tmp/folder2, /tmp/folder3. More info @ fishshell.com/docs/2.0/index.html#expand – Browning

@wviana Try jot -c 26 a z 1 – Verlie

@wviana: a self contained answer: printf '%b' (printf '\\\\x%02X ' (seq 97 122)) – Pairs

What about touch file{01..10}, how do you do that in fish shell? – Snashall

You can pass a format string to seq. touch file(seq -f %02g 10) – Sidney

@Snashall this should also work touch file(seq -w 10) – Angeliqueangelis