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List all file whose 3rd char is digit

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# 1  
Old 05-14-2019
List all file whose 3rd char is digit
list all file whose 3rd char is digit (or Nth position is digit)

what will be the required command?
# 2  
Old 05-14-2019
Code:
ls ??[0-9]*

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rahul samthewildone
# 3  
Old 05-14-2019
With an ERE (egrep or grep -E)
Code:
ls | egrep '^.{2}[0-9]'

^ beginning of line
.{2} a character 2 times
[0-9] a character in the range 0-9

Within " " the shell substitutes $var or ${var} by its value, before it hands it to the egrep
Code:
num=2
ls | egrep "^.{$num}[0-9]"

Last edited by MadeInGermany; 05-15-2019 at 05:12 AM.. Reason: Added a missing dot (thanks RudiC)
This User Gave Thanks to MadeInGermany For This Post:
rahul
# 4  
Old 05-14-2019
Slightly different approach:

Code:
echo ??[0-9]* | tr " " "\n"

This User Gave Thanks to wisecracker For This Post:
rahul
# 5  
Old 05-14-2019
Code:
compgen -f -X '!??[0-9]*'

# 6  
Old 05-15-2019
The simple "arguments to lines" command is printf
Code:
printf "%s\n" ??[0-9]*

But commands can overflow with "too many arguments".
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rahul
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