# Run file and print line results as in REPL
**URL:** https://discourse.julialang.org/t/run-file-and-print-line-results-as-in-repl/53651
**Category:** General Usage
**Tags:** question
**Created:** [January 20, 2021, 2:51am UTC](https://discourse.julialang.org/t/run-file-and-print-line-results-as-in-repl/53651 "2021-01-20T02:51:46Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@RaulDurand](https://discourse.julialang.org/u/RaulDurand)
#### Post date: [January 20, 2021, 2:51am UTC](https://discourse.julialang.org/t/run-file-and-print-line-results-as-in-repl/53651/1 "2021-01-20T02:51:46Z")
How can I run a file and obtain the results in the screen as if the file were executed line by line in the REPL? For example, if I have the file “file.jl”:
```julia
a = 1
b = 1
c = a+b
```
and run it from the shell
```julia
~$ julia file.jl > output.txt
```
the file output.txt should contain:
```julia
julia> a = 1
2
julia> b = 2
3
julia> c = a+b
5
```
---
### Author:  [@aplavin](https://discourse.julialang.org/u/aplavin)
#### Post date: [January 20, 2021, 12:09pm UTC](https://discourse.julialang.org/t/run-file-and-print-line-results-as-in-repl/53651/2 "2021-01-20T12:09:59Z")
`socat` can simulate tty input for any process:
run `echo 'a = 2\nb = 3\nc = a + b' | socat - EXEC:'julia',pty,setsid`
or
`cat file.jl | socat - EXEC:'julia',pty,setsid`
---
### Author:  [@rikh](https://discourse.julialang.org/u/rikh)
#### Post date: [January 20, 2021, 6:08pm UTC](https://discourse.julialang.org/t/run-file-and-print-line-results-as-in-repl/53651/3 "2021-01-20T18:08:52Z")
Just to check: should it be line by line or expression by expression. For example, would the following also be a valid `file.jl`?
```julia
a = 1
b = 1
c = a+b
function mysum(u, v)
u + v
end
mysum(a, b)
```
---
### Author:  [@RaulDurand](https://discourse.julialang.org/u/RaulDurand)
#### Post date: [January 21, 2021, 4:01am UTC](https://discourse.julialang.org/t/run-file-and-print-line-results-as-in-repl/53651/4 "2021-01-21T04:01:51Z")
Actually, by expression.
---
### Author:  [@rikh](https://discourse.julialang.org/u/rikh)
#### Post date: [January 21, 2021, 8:29am UTC](https://discourse.julialang.org/t/run-file-and-print-line-results-as-in-repl/53651/5 "2021-01-21T08:29:00Z")
Say `file.jl` contains
```julia
a = 1
b = 1
function mysum(u, v)
u + v
end
mysum(a, b)
```
We can define two functions
```julia
function repl_show(s::AbstractString)
block = Meta.parse(s)
args = block.args
expressions = filter(x -> typeof(x) != LineNumberNode, args)
for ex in expressions
code = string(ex)
println("julia> $code")
out = eval(ex)
println("$out\n")
end
end
function repl_file(path)
contents = read(path, String)
s = """
begin
$contents
end
"""
repl_show(s)
end
```
and apply them to the file:
```julia
julia> repl_file("file.jl")
```
which gives **as output**
```julia
julia> a = 1
1
julia> b = 1
1
julia> function mysum(u, v)
#= none:4 =#
#= none:5 =#
u + v
end
mysum
julia> mysum(a, b)
2
```
To “carry” these tools around across various folders or projects, you can put `repl_show` and `repl_file` in a package like ShowREPL. Then, it can be used as
```julia
julia -e 'using ShowREPL; ShowREPL.repl_file("file.jl")' > output.txt
```