|
|
Sponsored Content
Top Forums
UNIX for Dummies Questions & Answers
UNIX File reading question
Post 302919835 by Triple M on Saturday 4th of October 2014 05:26:43 PM
10-04-2014
|
|
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Can any u pls tell me :-
I want to read a particular line from a file, say line no. 10.
This can be done by using awk..but that method I think, is inefficient.
Is there any direct command for this?
Thanks (2 Replies)
Discussion started by: yeheyaansari
2 Replies
2. UNIX for Advanced & Expert Users
I have a file that has a list of numbers in it. Each line has a different number. I am trying to create some sort of loop within a script that will pick the numbers up on lines 1 and 2 and then put those figures into the script. It then goes through the process then loops back and reads lines 2 and... (5 Replies)
Discussion started by: mariner
5 Replies
3. Shell Programming and Scripting
Hi ,
I need to read line by line from a file. Can u please tell me the most efficient way to do it. SInce i will be reading more than 1000 files in my program. i am trying the following options :
1. nawk option
nawk'{
print $0
}'files.temp
2.
filecount=`cat files.temp | wc -l`... (2 Replies)
Discussion started by: pradeepthanraj
2 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I am a beginner in scripting...I have to do a script where I have to read a file which has list of job names, line by line and for every line execute a dsjob command to find the log details of the job and extract only the start time of the job, if it is greater than jan 01 2008 and create... (1 Reply)
Discussion started by: Vijay81
1 Replies
5. Shell Programming and Scripting
Hello,
I'm just getting started with BASH programming. I would like to write a script to solve a file renaming problem I have. I received a directory containing a collection (>2000) of files whose names are in DOS 8.3 format, and woild like to rename the filenames to a longer and more... (8 Replies)
Discussion started by: polomora
8 Replies
6. Shell Programming and Scripting
I have been doing automation of daily check activity for a server, i have been using sqls to retrive the data and while loop for reading the data from the file for several activities. BUT i got a show stopper the below one.. where the data is getting store in $temp_file, but not being read by while... (1 Reply)
Discussion started by: KuldeepSinghTCS
1 Replies
7. Shell Programming and Scripting
i have a directory that has n files starting with ABC_00x.txt and ABC_00x.txt where x is the integer number.
i want to read the contents of each file and write it into a log file.
can somebody help me in writing the shell script in unix (3 Replies)
Discussion started by: vkca
3 Replies
8. Shell Programming and Scripting
Hi All
I have written the following script:
#!/bin/ksh
while read cmdline
do
echo `$cmdline`
pid="$cmdline"
done<commands.txt
===========
commands.txt contains:
ps -ef | grep abc | grep xyz |awk '{print $2};
My objective is to store the o/p of the command in a variable and do... (8 Replies)
Discussion started by: rahulparo
8 Replies
9. Shell Programming and Scripting
Hi ,
I just write a simple function to read the file line by line.
But when I run it it says out of memory.
I am not sure about the root cause, Can someone help me out of this?
:D
#! /usr/bin/perl
use strict;
sub checkAPs{
my $NDPDir = "/home/eweiqqu/NCB/NDP_files/";
... (1 Reply)
Discussion started by: Damon_Qu
1 Replies
10. Shell Programming and Scripting
No doubt these questions have been answered many times, but I struggled to find them - sorry. 2 questions:
1. I wish to read in a file one line at a time and do 'stuff' with it, such as:
file="tst2"
while IFS= read -r line
do
echo `wget -qO -... (3 Replies)
Discussion started by: Golpette
3 Replies
LEARN ABOUT OSF1
learn
learn(1) General Commands Manual learn(1) NAME
learn - Provides computer-aided instruction for the C shell SYNOPSIS
learn [-directory] [subject] [lesson] The learn command provides computer-aided instruction courses and practice in the use of Tru64 UNIX. OPTIONS
Allows you to exercise a script in a nonstandard place. DESCRIPTION
To get started, enter learn; if this is the first time that you are invoking the learn command, you are guided through a series of ques- tions to determine what type of instruction you want to receive. If you have used learn before and left your last session without completing a subject, the program uses information in $HOME/.learnrc to start you up in the same place you left off. To bypass questions, enter a subject or lesson. In order to enter a lesson, you must know the lesson number that you received in a previ- ous learn command session. If you do not know the lesson number, enter the lesson number as a subject. The learn command searches for the first lesson containing the subject you specified. If the lesson is a - (dash), learn prompts for each lesson; this is useful for debug- ging. You can specify the following subjects: files editor vi morefiles macros eqn C SUBCOMMANDS
There are a few special commands. The bye command terminates a learn session, and the where command tells you of your progress (where m tells you more.) The again command redisplays the text of the lesson and again lesson lets you review lesson. The hint command prints the last part of the lesson script used to evaluate a response, while hint m prints the entire lesson script. This is useful for debugging lessons and might possibly give you an idea about what is expected. EXAMPLES
To take the online lesson about files, enter: learn files You are then prompted for further input. FILES
Playpen directories. Start-up information. SEE ALSO
Commands: csh(1), ex(1) learn(1)