R version 4.0.3 (2020-10-10)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Debian GNU/Linux bullseye/sid
Matrix products: default
BLAS: /usr/lib/x86_64-linux-gnu/openblas-pthread/libblas.so.3
LAPACK: /usr/lib/x86_64-linux-gnu/openblas-pthread/libopenblasp-r0.3.13.so
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
LC_MONETARY=en_US.UTF-8
[6] LC_MESSAGES=en_US.UTF-8 LC_PAPER=en_US.UTF-8 LC_NAME=C
LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices datasets utils methods base
other attached packages:
[1] colorout_1.2-2
loaded via a namespace (and not attached):
[1] compiler_4.0.3
```
What is wrong with the following Shell script that gives the error? If
you decrease the sequencing number from 50 to e.g. 10 the error might
disappear!
```bash
seq 50 | Rscript -e "cat(readLines(file('stdin')), sep='\n')" | head -n 2
1
2
Error in cat(readLines(file("stdin")), sep = "\n") :
ignoring SIGPIPE signal
Execution halted
```
It is already asked on StackOverflow without a good answer:
https://stackoverflow.com/questions/28915838/piping-rscript-gives-error-after-output
thanks,
Farid
Hello there,
This error happens if you did not finish
reading from the pipe.
E.g. I have this function in my local
zshrc, to read tsv files with less in
terminal width ...
readdelim() { Rscript -e "options(width=$COLUMNS); read.delim('$1', check.names=FALSE, na='N/A')" | less }
... and if the tsv file has many lines I
did not scroll completely to the bottom
(read all of the pipe into less), I also
get that error from the R end of the
pipe.
R
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