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pages/04.other/15.fish/default.en.md

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+---
+title: Fish
+---
+
+[toc]
+## For loop
+### Iterating over number sequence
+`for i in (seq 1 10); echo $i; end`  
+Output:  
+```
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+```
+
+If you want all numbers to be padded to equal lengths use the `-w` flag with `seq`  
+`for i in (seq -w 1 10); echo $i; end`  
+Output:  
+```
+01
+02
+03
+04
+05
+06
+07
+08
+09
+10
+```