# How can I find line number of source code for ERROR?
**URL:** https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787
**Category:** New to Julia
**Tags:** question
**Created:** [September 30, 2025, 1:54pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787 "2025-09-30T13:54:36Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@psalm1750](https://discourse.julialang.org/u/psalm1750)
#### Post date: [September 30, 2025, 1:54pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/1 "2025-09-30T13:54:36Z")
I am writing Julia code for some small project.
But it seems that Julia script engine (/usr/bin/julia) does not display the line number for error detection.
Althought it shows a line number, it is not the place where the error was detected,
but the place of function which contains error.
Thanks in advance
---
### Author:  [@ForceBru](https://discourse.julialang.org/u/ForceBru)
#### Post date: [September 30, 2025, 2:01pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/2 "2025-09-30T14:01:21Z")
Does it not go inside the function definition to show the exact line? Please post the relevant error message and explain what exactly is unclear about it.
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### Author:  [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)
#### Post date: [September 30, 2025, 2:21pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/3 "2025-09-30T14:21:56Z")
When I was new to julia, I also seek for tools to help me dubug.
But now I just use `println` and `error` to insert to suspicious places to help me locate the error.
---
### Author:  [@psalm1750](https://discourse.julialang.org/u/psalm1750)
#### Post date: [September 30, 2025, 2:55pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/4 "2025-09-30T14:55:07Z")
Thank you for your replay , ForceBru.
I will make some simple sample for explanation.
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### Author:  [@psalm1750](https://discourse.julialang.org/u/psalm1750)
#### Post date: [September 30, 2025, 3:00pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/5 "2025-09-30T15:00:04Z")
Oh, that’s too bad. It is same to me.
Almost all language can show some line number for error place.
Or at least, has something like trace mode like “/bin/bash -x”.
But I can not find them for Julia so far.
I believe it is essential to locate error code.
---
### Author:  [@gdalle](https://discourse.julialang.org/u/gdalle)
#### Post date: [September 30, 2025, 3:13pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/6 "2025-09-30T15:13:08Z")
Hi @psalm1750,
Can you give an example of the code you’re running and for which the error is not precise enough? Please copy-paste the entire code, or at least the entire error message
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### Author:  [@sgaure](https://discourse.julialang.org/u/sgaure)
#### Post date: [September 30, 2025, 5:46pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/7 "2025-09-30T17:46:46Z")
I usually get loads of line numbers:
```julia-auto
julia> using LinearAlgebra
julia> A = [0 1; 0 0]
2×2 Matrix{Int64}:
0 1
0 0
julia> inv(A)
ERROR: SingularException(1)
Stacktrace:
[1] trsm!(side::Char, uplo::Char, transa::Char, diag::Char, alpha::Float64, A::Matrix{Float64}, B::Matrix{Float64})
@ LinearAlgebra.BLAS ~/.julia/juliaup/julia-1.12.0-rc3+0.x64.linux.gnu/share/julia/stdlib/v1.12/LinearAlgebra/src/blas.jl:2228
[2] generic_trimatdiv!
@ ~/.julia/juliaup/julia-1.12.0-rc3+0.x64.linux.gnu/share/julia/stdlib/v1.12/LinearAlgebra/src/triangular.jl:1275 [inlined]
[3] _ldiv!
@ ~/.julia/juliaup/julia-1.12.0-rc3+0.x64.linux.gnu/share/julia/stdlib/v1.12/LinearAlgebra/src/triangular.jl:1171 [inlined]
[4] ldiv!
@ ~/.julia/juliaup/julia-1.12.0-rc3+0.x64.linux.gnu/share/julia/stdlib/v1.12/LinearAlgebra/src/triangular.jl:1178 [inlined]
[5] inv(A::UpperTriangular{Int64, Matrix{Int64}})
@ LinearAlgebra ~/.julia/juliaup/julia-1.12.0-rc3+0.x64.linux.gnu/share/julia/stdlib/v1.12/LinearAlgebra/src/triangular.jl:1228
[6] inv(A::Matrix{Int64})
@ LinearAlgebra ~/.julia/juliaup/julia-1.12.0-rc3+0.x64.linux.gnu/share/julia/stdlib/v1.12/LinearAlgebra/src/dense.jl:1083
[7] top-level scope
@ REPL[19]:1
```
Right after the file name, far out to the right, we can see e.g. `blas.jl:2228`, `triangular.jl:1275 [inlined]`, etc, etc,.
The numbers on the left, `[1]`, `[2]` can be typed at the julia-prompt followed by ctrl-q to enter an editor on that line in the file. I.e. after the stack trace, to enter the `ldiv!` function:
```julia-auto
julia> 3
...
```
Do you have an example where you don’t get them?
---
### Author:  [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)
#### Post date: [October 1, 2025, 12:42am UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/8 "2025-10-01T00:42:22Z")
> [@sgaure](#):
>
> The numbers on the left, `[1]`, `[2]` can be typed at the julia-prompt followed by ctrl-q to enter an editor on that line in the file
I don’t get this. It seems that `ctrl+q` is a VSCode action.
But your instance here is a “nice” instance so that `ctrl+click` would jump to the file, which is convenient.
There are other instances in which the `ctrl+click` won’t jump, so that I can only go to github to see the code, but in this case it is way more complicated.
```julia
julia> function b()
println()
local a = s.i, b = 4.
println()
end
b (generic function with 1 method)
julia> function a()
println()
b()
println()
end
a (generic function with 1 method)
julia> a()
ERROR: BoundsError: attempt to access Float64 at index [2]
Stacktrace:
[1] indexed_iterate(I::Float64, i::Int64, state::Nothing)
@ Base ./tuple.jl:168
[2] b()
@ Main ./REPL[1]:3
[3] a()
@ Main ./REPL[2]:3
[4] top-level scope
@ REPL[3]:1
```
In this case the [2], [3], [4] is not readable, the link in [1] has not hyperlink that I can jump to by clicking.
---
### Author:  [@psalm1750](https://discourse.julialang.org/u/psalm1750)
#### Post date: [October 1, 2025, 4:59am UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/9 "2025-10-01T04:59:52Z")
Ddalle and all other julia menbers, thank you for all of your advice,
And I found that “error line number” is provided in very dark color.
I will check myself and will close my question.
Here, I attached tiny sample file for your reference.
It has an error at line=2.
But it seems to report at line=6.
Thank you for all.
[sample.jl](https://discourse.julialang.org/uploads/short-url/gqStlbilzEEclWSC1pcCx0fKNka.jl) (70 Bytes)
---
### Author:  [@sgaure](https://discourse.julialang.org/u/sgaure)
#### Post date: [October 1, 2025, 7:03am UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/10 "2025-10-01T07:03:05Z")
> [@WalterMadelim](#):
>
> I don’t get this. It seems that `ctrl+q` is a VSCode action.
It’s in the REPL. I’ve never run VScode.
---
### Author:  [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)
#### Post date: [October 1, 2025, 8:37am UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/11 "2025-10-01T08:37:45Z")
Oh I see. `ctrl+q` is better than `ctrl + click`, the latter cannot open
` @ Base .\tuple.jl:168`
(I don’t know why). But `ctrl + q` can indeed goto there.
---
### Author:  [@gdalle](https://discourse.julialang.org/u/gdalle)
#### Post date: [October 1, 2025, 1:15pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/12 "2025-10-01T13:15:28Z")
> [@psalm1750](#):
>
> Here, I attached tiny sample file for your reference.
> It has an error at line=2.
> But it seems to report at line=6.
The stack trace, which you see below the error message, is composed of several numbered “frames”, each corresponding to a distinct line from a distinct function. Indeed functions call each other in sometimes complicated ways, so telling you the innermost location isn’t always sufficient. Here for instance the error originates at line 2 (in your function definition), but it was your function call at line 6 that actually triggered it.
As for the color, you should be able to change the color scheme of your terminal to something more visible?
---
### Author:  [@psalm1750](https://discourse.julialang.org/u/psalm1750)
#### Post date: [October 1, 2025, 2:18pm UTC](https://discourse.julialang.org/t/how-can-i-find-line-number-of-source-code-for-error/132787/13 "2025-10-01T14:18:55Z")
Hi gdalle, thank you for your quick and appropriate reply, and I agree with you in terms of terminal color.
May be I should set “julia --color=no” option.