03-21-2002
Tail-alike display of new files in directory
The system I work on, produces several kinds of status-files in a single directory. I would like to be able to see the files as they are added to this directory.
I was wondering if it would be possible to get a "tail -f" alike view of the ls-command, in such a way that a newly added file is automagically added at the bottom.
The way we do it now, is with the command below, which we need to execute manually (which imho is not handy):
ls -l -rt|tail -20 (to view 20 last files)
And we do more "in depth" searches inside these files with:
ls -l -rt tail `grep -l searchstring *`
But it would be wonderful to just see the list "grow" since this way, it is much easier to recognize errormessages since these errormessages are fixed size, 645 bytes and easy to spot.
We use SunOS 5.7 with Bash 2.01.
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list(3) InterNetNews Documentation list(3)
NAME
list - list routines
SYNOPSIS
#include <inn/list.h>
struct node {
struct node *succ;
struct node *pred;
};
struct list {
struct node *head;
struct node *tail;
struct node *tailpred;
};
void list_new(struct list *list);
struct node *list_addhead(struct list *list, struct node *node);
struct node *list_addtail(struct list *list, struct node *node);
struct node *list_head(struct list *list);
struct node *list_tail(struct list *list);
struct node *list_succ(struct node *node);
struct node *list_pred(struct node *node);
struct node *list_remhead(struct list *list);
struct node *list_remtail(struct list *list);
struct node *list_remove(struct node *node);
struct node *list_insert(struct list *list, struct node *node, struct node *pred);
bool list_isempty(struct list *list);
DESCRIPTION
list_new initialises the list header list so as to create an empty list.
list_addhead adds node to the head of list, returning the node just added.
list_addtail adds node to the tail of list, returning the node just added.
list_head returns a pointer to the the node at the head of list or NULL if the list is empty.
list_tail returns a pointer to the the node at the tail of list or NULL if the list is empty.
list_succ returns the next (successor) node on the list after node or NULL if node was the final node.
list_pred returns the previous (predecessor) node on the list before node or NULL if node was the first node.
list_remhead removes the first node from list and returns it to the caller. If the list is empty NULL is returned.
list_remtail removes the last node from list and returns it to the caller. If the list is empty NULL is returned.
list_remove removes node from the list it is on and returns it to the caller.
list_insert inserts node onto list after the node pred. If pred is NULL then node is added to the head of list.
HISTORY
Written by Alex Kiernan <alex.kiernan@thus.net> for InterNetNews 2.4.0.
$Id: list.pod 9074 2010-05-31 19:01:32Z iulius $
INN 2.5.3 2011-06-10 list(3)