Frequently Asked Questions
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Printing
How to print ps (postscript) files and text files?
How to mark or unmark consecutive pages in
gv
or
ghostview
?
How to print non-ps or non-text format files?
How to print dvi (device independent) file?
Troubleshooting for pdf files and printing
How to check printing status?
How to cancel printing jobs?
How to print several pages per sheet?
Email
How to set up e-mail forwarding?
How to cancel e-mail forwarding?
How to set up vacation e-mail?
How to turn off the vacation feature?
What is spam mail?
How to filter spam mail?
How do I do to download the elm messages in a file I can later, if needed, open again using elm?
Filesystem
What does the characters "r", "w", "x", "d", and "l" mean in the output of the command "
ls -l
"?
How to Recover Deleted Files?
How to handle the error message "Error: Can't open display" or "Unable to open the display"?
How to protect your private files?
How to give permission to a specific person to allow him/her to read my directory? (setfacl Howto)
How to create password protected website?
How to automatically post a bunch of photos in your webpage?
How to Compress and Uncompress Files (tar and gzip)?
How to Check and Clean Unused Files in the Directory /tmp?
How to Check the Total Size of Files in the Current Directory?
Programming: R, S-Plus, C
How to install an R package locally?
How to install command-line editor in Splus?
How to run R/Splus program in background so that the command can continue running in the background after you log out?
How to print the R graphics directly in R?
How to read SAS data files into Splus?
How to read data files of other format (e.g. excel) into Splus?
How to call C functions in R?
How to call Fortran subroutines in R?
How to call C functions or Fortran subroutines in Splus?
How to call Fortran subroutines/functions by C?
Latex
How to have doublespacing effect in LaTeX?
Unix
Running a unix "job" at pre-specified time
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