Is this a fedora bug? [^11]

asked 2018-04-04 02:03:29 -0600

GaeTaeng
11 ●3

updated 2018-05-31 05:36:06 -0600

FranciscoD_
10447 ●60 ●128 ●194 https://ankursinha.in

Fedora 64-Bit

VMware Workstation 14 Player

i'm not have 60p

So i can't upload picture .. :(

i made 20 file , that name { 01, 02, 03, 04, 05, 06, 07 ... 19, 20 }

i typed at fedora

$ ls

Print out

01 03 05 07 09 11 13 15 17 19

02 04 06 08 10 12 14 16 18 20

also

i typed to fedora

$ls *[^11]*

I entered it, hoping for anyword & [not 1 or 1 ] & anyword .

I thought '[^11]' was the same as '?' .

but

is that Print out

01 03 05 07 09 12 14 16 18 20

02 04 06 08 10 13 15 17 19

'11' disappeared.

is this bug?

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1

answered 2018-04-04 05:51:49 -0600

villykruse
4657 ●3 ●248 ●90

updated 2018-04-04 05:54:08 -0600

I assume your command was actually

ls *[^11]*

This matches any filename with at least one character not a '1'.

So, the names '1', '11', '111', and so on. will not match, and all other names will match.

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Thank you for your kind reply. i have Low English was weak and I could not understand perfectly

I have thought that things written in [] are linked by the relation of 'or'. Should not it be separated by '^ 1' and '1'?

GaeTaeng ( 2018-04-08 02:09:25 -0600 )edit

If the character is 1 or if it is 1, then the character will not match this glob: [^11].

If the character is 1 or if it is 1, then the character will match this glob [11].

Specifying the character 1 twice is redundant, and will have the same effect as [^1] and [1] respectively. Or you could specify [^111111111111111111111] with the same result.

If the character is 1 or if it is 2, then the character will not match this glob: [^12].

If the character is 1 or if it is 2, then the character will match this glob [12].

It is unclear what you intend to do.

villykruse ( 2018-04-08 08:52:11 -0600 )edit

Thank you very much.

GaeTaeng ( 2018-04-10 23:33:08 -0600 )edit

I'm understand

GaeTaeng ( 2018-04-10 23:33:19 -0600 )edit

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1

answered 2018-04-04 15:37:15 -0600

ssieb
3081 ●1 ●24 ●59

Read the Pattern Matching section of the bash man page. The ^ character inverts the usual usage of the [] pattern. So it matches a single character that isn't in the list. The second 1 in your expression is redundant.

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Thank you for your kind reply. oh if so When [] and ^ are connected, is it denying the entire contents of []?

GaeTaeng ( 2018-04-08 02:12:07 -0600 )edit

That is correct.

ssieb ( 2018-04-08 15:38:22 -0600 )edit

Oh, I am deeply grateful to you.

GaeTaeng ( 2018-04-10 23:18:50 -0600 )edit

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