On 24 January 2018 at 07:55, William Dunlap wrote:
| On Linux you can trace all the getenv calls with ltrace. It only
| works on ELF files, not sh scripts:
|
| % R CMD ltrace -e getenv `R RHOME`/bin/*/R
| libR.so->getenv("R_HOME")
| = "/home/R/R-3.4.3/lib64/R"
| libR.so->getenv("R_TRANSLATIONS")
| = nil
| libR.so->getenv("R_PLATFORM")
| = "x86_64-pc-linux-gnu"
| libR.so->getenv("R_PAPERSIZE")
| = "letter"
| libR.so->getenv("R_PAPERSIZE")
| = "letter"
| libR.so->getenv("R_PRINTCMD")
| = "lpr"
| libR.so->getenv("R_RD4PDF")
| = "times,hyper"
| ...
A+ suggestion.
I was thinking about strace and filtering that, but was unaware of its ltrace
trick. Very nice---thanks, Bill!
Dirk
--
http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org
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