May 31, 2012 · I need to set the same chmod, how to get number for -rw-r--r-- ?

Early history: rm had a recursive option before the others. It was -r. Then cp gained a matching -r. Then ls wanted to have a recursive option, but ls -r already meant "reverse sort" so it had to be -R. There …

Oct 22, 2019 · I don't know how to install the software as follows: R-Linux. I need this program to recover lost information. The directions are: 'Download the archive file with extension .db'.

Feb 27, 2017 · cp -r is meant to copy files recursively, and cp -R for copying directories recursively. But I've checked, and both appear to copy both files and directories, the same thing. So, what's the differe...

Jan 8, 2021 · The -r asks: does the user have read permission for the file identified by the $1 operand? The POSIX specification of the test utility contains the list of all standard operators. Some of them …

Mar 27, 2015 · There is no stand-alone read command: instead, it is a shell built-in, and as such is documented in the man page for bash: read [-ers] [-a aname] [-d delim] [-i text] [-n nchars] [-N …

In the Unix world, a carriage return (commonly encoded as \r in programming languages) is an unremarkable control character. You can have carriage returns inside a line of text, like any other …

Nov 8, 2016 · I am pretty new to Linux. I installed R-base in my Ubuntu 12.04 using the Software Center (which by default is r-2.14). I want to upgrade to/install R 3.02 or newer. How can I do that? Thank you.

Oct 29, 2021 · I'm using Ubuntu 20.04.3 LTS. I'm using R version 3.6.3. Some packages is not in there. Therefore I need R version 4. or higher than 4. I tried those things: sudo -H gedit /etc/apt/sources.list …

Aug 7, 2012 · I'm looking for the difference between cp -r and cp -a. What does "recursive" mean in terms of copying files from a folder?