How to display certain line of file only using head or tail in 1 command?
First month learning about the Linux terminal and it has been a challenge yet fun so far. We're learning by using a gameshell. I'm trying to display a certain line ( only allowed 1 command ) from a file only using the head or tail. I'm pretty about this answer:
However, it is not the good answer once I complete the gash check.
I've a major file which includes other files and now I wanna 'cut' the file in several minor parts....like
....
find / -name "*.tmp" >filea
wc -l filea >fileb
sed -e '1s/ filea//' fileb >filec
AMOUNT=`cat filec`
if ; then
cat file a |head -100l (ell) |tail -100l >filec
cat file a |head... (6 Replies)
I am new to UNIX......I have one file which contains thousnads of records with header and tailer.
Header
Record 1
Record 2
....
....
Last Record
Trailer
I want to concatenate Header and Trailer in the first line....now the output should look like this:
Header: Header value, Trailer:... (2 Replies)
Hi,
I have been given assignment of 30 scripts out of which I was able to solve many, I need help with few out of which one asks to imitate head and tail command of unix without using the head and tail commands. Problem is stated below:
Write an interactive shell script to imitate the head... (5 Replies)
Hi ,
1)i want to display specific line number using tail command.
e.g. display 10 line from end.
Please help...
2)Want to display line 10 to 15 (from end)using tail command) (2 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
view the 7th line of the program xxx.sh
2. Relevant commands, code, scripts, algorithms:
head command tail... (10 Replies)
Hi,
I want to read a live log file line by line and considering those line which are newly added to file
Below code I am using, which read line but as soon as it read new line from log file its starts processing from very first line of file.
tail -F /logs/COMMON-ERROR.log | while read... (11 Replies)
Discussion started by: ketanraut
11 Replies
LEARN ABOUT DEBIAN
list
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)