ls -l | grep

[maelamrani]

Hello,
why when i use ls -l with grep it doesnt show any results but with ls it give me the results

 

[arochester]

You are trying to do two different things. One lists the words that meet the pattern. https://www.cours-gratuit.com/unix-linux/exercices-sur-la-commande-grep

The other shows file or directory, size, modified date and time, file or folder name and owner of file and its permission. https://www.tecmint.com/15-basic-ls-command-examples-in-linux/

 

[captain-sensible]

this is quite a neat site for bash commands https://explainshell.com/

 

[JasKinasis]

Hello,
why when i use ls -l with grep it doesnt show any results but with ls it give me the results

View attachment 5132

The reason is because ls and ls -l format their output differently.

Your pattern is matching the start of the line. And because ls only lists the file/directory names - your pattern will work with ls.

However, when you use ls -l, the listing format starts with the permissions, user/group, file-size, time-stamp and the file-name is at the end.
So in this case - rather than matching the start of the line, your pattern needs to match the end of the line instead.
So remove the ^ at the start of the pattern and add $ at the end:
e.g.
ls -l | egrep [Ff]raise$
That should work with ls -l

 

[rdrtx1]

ls -1 essai-grep/* | grep -E /[Ff]raise | xargs ls -l