Formatting text and adding text-part between specific pattern - linux

Question

On GNU/Linux, I've following output by running ls command:
$ ls -l /dev/disk/by-label/
total 0
lrwxrwxrwx 1 root root 10 Mar 4 18:21 Documents+Edu -> ../../sda4
lrwxrwxrwx 1 root root 10 Mar 4 18:17 Ext4 -> ../../sda3
lrwxrwxrwx 1 root root 10 Mar 4 18:21 Game+Movie -> ../../sda6
lrwxrwxrwx 1 root root 10 Mar 4 18:42 OS -> ../../sda7
lrwxrwxrwx 1 root root 10 Mar 4 18:20 Software+Video -> ../../sda5
And I want the following output:
sudo mount /dev/sda4 /media/$USER/Documents+Edu
sudo mount /dev/sda3 /media/$USER/Ext4
sudo mount /dev/sda6 /media/$USER/Game+Movie
sudo mount /dev/sda7 /media/$USER/OS
sudo mount /dev/sda5 /media/$USER/Software+Video
In other words:-
Adding text sudo mount /dev/ before every /sdax and /media/$USER/ before labels like: Documents+Edu etc.
Formatting as needed.
How can I achieve desired output on Linux by using commands like: grep, cut, awk, sed, etc.?

Answer 1

Another option could be to avoid ls altogether iterating through the files with readlink:
$ cat ../nols.sh
cd /dev/disk/by-label
for f in *
do
v=$(basename $(readlink $f))
echo "sudo mount /dev/$v /media/\$USER/$f"
done
$ sh ../nols.sh
sudo mount /dev/sda4 /media/$USER/Documents+Edu
sudo mount /dev/sda3 /media/$USER/Ext4
sudo mount /dev/sda6 /media/$USER/Game+Movie
sudo mount /dev/sda7 /media/$USER/OS
sudo mount /dev/sda5 /media/$USER/Software+Video

Answer 2

Since you don't need anything apart from the names and its symbolic links, it might me best to just do ls -1 (one instead of L) ot just get the last column. Then, pipe to this awk:
awk -F"->|/" '{printf "sudo mount /dev/%s /media/$USER/%s\n", $NF, $1}'
It slices the text in either -> or / separators. Based on that, it gets the last one and the first one and populates the string accordingly.
Test
$ ls -1 /dev/disk/by-label/ | awk -F"->|/" '{printf "sudo mount /dev/%s /media/$USER/%s\n", $NF, $1}'
sudo mount /dev/sda4 /media/$USER/Documents+Edu
sudo mount /dev/sda3 /media/$USER/Ext4
sudo mount /dev/sda6 /media/$USER/Game+Movie
sudo mount /dev/sda7 /media/$USER/OS
sudo mount /dev/sda5 /media/$USER/Software+Video

Answer 3

# -- Prepare ---
Folder='/dev/disk/by-label/'
HeaderLen=$(ls -ld . | wc -c )
# -- execute ---
ls -l "${Folder}" | sed "1d;s#.\{${HeaderLen}\}\(.*\) -> .*\(/[^/]*\)#sudo mount /dev\2 /media/\$USER/\1#;t;d"
estimate the first partof ls that is not used (and will be removed)
list the folder pipe to a sed
remove 1st line (total info)
remove first part and take 2 group of text separate by ->, rewrtie it in new format
if substitution occur, go to end of script (print)
if no, remove the line (and cycle without print). This remove file not linked in your format