anchor.diff:      cat("Proceed? (ctrl-c or enter)\n")
       scan(quiet=TRUE)
       for (i in x) system(paste0("rm -rf ./",i,".Rcheck"))
  -    cmd = paste0("ls -1 *.tar.gz | grep -E '", paste0(x,collapse="|"),"' | parallel R CMD check")
  +    cmd = paste0("ls -1 *.tar.gz | grep -E '", paste0(x,collapse="|"),"' | TZ='UTC' parallel R CMD check")
     }
     if (as.integer(system("ps -a | grep perfbar | wc -l", intern=TRUE)) < 1) system("perfbar",wait=FALSE)
     system("touch /tmp/started.flag ; rm -f /tmp/finished.flag")
  
positive.code:   numtgz = as.integer(system("ls -1 *.tar.gz | wc -l", intern=TRUE))
    stopifnot(numtgz==length(deps))
    if (which=="rerun.all") {
      cmd = "rm -rf *.Rcheck ; ls -1 *.tar.gz | parallel R CMD check"
      cat("WIPE ALL CHECKS:",cmd,"\n")
      cat("Proceed? (ctrl-c or enter)\n")
      scan(quiet=TRUE)
  
negative.code: find . -name 00check.log | grep -E 'AFM|easycsv|...|optiSel|xgboost' | xargs grep -H . > /tmp/out.log
  # For RxmSim: export JAVA_HOME=/usr/lib/jvm/java-8-oracle
  more <failing_package>.Rcheck/00check.log
  TZ='UTC' R CMD check <failing_package>.tar.gz
  R CMD INSTALL ~/data.table_1.9.6.tar.gz   # CRAN version to establish if fails are really due to data.table
  TZ='UTC' R CMD check <failing_package>.tar.gz
  ls -1 *.tar.gz | grep -E 'Chicago|dada2|flowWorkspace|LymphoSeq' | TZ='UTC' parallel R CMD check &
  
  # Warning: replacing previous import robustbase::sigma by stats::sigma when loading VIM
  # Reinstalling robustbase fixed this warning. Even though it was up to date, reinstalling made a difference.
  