user2105469 questions

• updating package in R: `update.packages` vs. `install.packages`
• add header to stdout stream in single-line bash pipeline
• Why does R find a data.frame variable that isn't in the data.frame?
• Why is R reading numeric data as character?
• How do I get lftp to use SSL/TLS security mechanism from the command line?
• data.table: using setkey with a column name variable

user2105469 answers