Geek Answers Handbook

Does Linux support tail +2?

I noticed that tail +2 supported on Solaris ksh, but an error will occur on Red Hat Linux:

 c008>> ps -p 4009,6282,31401,31409 | tail +2 tail: cannot open `+2' for reading: No such file or directory

In Solaris,

 bjbldd>> ps -p 2622,16589,11719,846 |tail +2 16589 ?? 0:00 xterm 846 pts/180 0:00 cscope 11719 pts/180 0:00 cscope 2622 pts/114 0:00 apxcscop

The PID TTY TIME CMD excluded by the symbol "tail +2".

I know that grep -v PID will work. But I wonder if there are similar options for Linux tail?

+7
source share
2 answers

From tail(1) :

  -n, --lines=K output the last K lines, instead of the last 10; or use -n +K to output lines starting with the Kth

So try -n +2 or --lines=+2 :

 $ ps -p 20085 9530 29993 2069 2012 | tail -n +2 2012 ? Sl 0:00 /usr/bin/gnome-keyring-daemon --daemonize --login 2069 ? S 0:00 /usr/bin/dbus-launch --exit-with-session i3 9530 ? Sl 0:01 /usr/lib/udisks/udisks-daemon 20085 ? S 0:00 /usr/sbin/apache2 -k start 29993 ? S 0:00 [kworker/1:0] $
+17
source

I was familiar with the tail +2 syntax on Solaris, but it doesn't seem to work on Ubuntu.

This superuser response seems to work:

 tail --lines=+100 <file>

Source: https://superuser.com/questions/62970/unix-cat-starting-from-line

+1
source

More articles:


All Articles