Top Forums Shell Programming and Scripting head command with more than one file Post 302323844 by josegr on Tuesday 9th of June 2009 06:15:45 AM
MySQL

Yes that is. With

for line in $(ls); do head -1 $line >> myfile; done

worked as well if I had the files, whose first lines I want to put together, in the same directory, but it is not like this. I've skipped the details. What I wanted is to join together the first value of 6 files named fort.605 in one file, each in a different directory, i.e:

approach1.dir/fort.605
...
approach6.dir/fort.605

The first way is straightforward, but thanks a lot
 
Test Your Knowledge in Computers #782
Difficulty: Medium
Bill Gates dropped out of Yale University to start his own company
True or False?

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Simple Command (head) Question

Okay, this probably sounds dumb for anyone who knows the answer, but I'm completely lost. I have to use the head command to search a directory AND all of its subdirectories to display the first line of all .txt files. I know how to do this: head -1 ~/UnixCourse/*.txt, but that does not search the... (4 Replies)
Discussion started by: jbud
4 Replies

2. Shell Programming and Scripting

head command

Hi All, How can the head command be used to extract only a particular line. By default head -n filename displays the first n lines. I want only the nth line. I couldn't get it from forum search. Thanks, Sumesh (6 Replies)
Discussion started by: sumesh.abraham
6 Replies

3. UNIX for Dummies Questions & Answers

head command wont work on MF file

I am trying to do a head on a mainframe file and on doing ti just gives me a blank screen with nothing on it. however, when i do a tail for the same file...i get a few lines on the screen. i know tht mainframe files have all the records on one line...does this have to do something with this.... (10 Replies)
Discussion started by: alfredo123
10 Replies

4. UNIX for Dummies Questions & Answers

alternative for head command

Hi friends,I am new to unix and this is really a dummy question.but please help me out. How to simulate head command without using head command??? also tail command too,also more command. it is given as a homework to do....please tell me how to do (2 Replies)
Discussion started by: nikhilneela
2 Replies

5. Homework & Coursework Questions

Unix find and head command help

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: I've been stuck on this problem for 2 days now What command would you enter to list the first lines of all text... (11 Replies)
Discussion started by: partieboi37
11 Replies

6. Shell Programming and Scripting

Diff/head - not sure if this is the right command to use

Hi, I need some advise on whether there is a better way of doing what I am currently planning to do. Perhaps I should be using arrays instead of re-directing output to files? I need to use a tool/program named ADRCI provided by Oracle to remove trace files that it generates. Honestly it is... (1 Reply)
Discussion started by: newbie_01
1 Replies

7. Homework & Coursework Questions

UNIX head command not working?

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: Write a script that allows the user to print the first n lines or the last n lines of every file in the... (18 Replies)
Discussion started by: lukefrost96
18 Replies

8. Shell Programming and Scripting

Head command queries

we have a file as below AREA,COUNTRY,RANK A,MX,1 A,MX,2 A,MX,5 A,MX,8 A,IN,7 A,IN,5 A,IN,21 B,CN,6 B,CN,2 B,CN,8 B,CN,0 we need the TOP 2 RANK records for the combination of Area, Country as below. i know head -2, which gives top 2 records from file but not sure it lists based on... (7 Replies)
Discussion started by: JSKOBS
7 Replies

9. Homework & Coursework Questions

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: head -23 history.txt | tail -1... (1 Reply)
Discussion started by: forzatekk
1 Replies
GLOBUS-UPDATE-CERT(8)					      GSI-C OpenSSL Commands					     GLOBUS-UPDATE-CERT(8)

NAME
globus-update-certificate-dir - Update symlinks in the trusted CA directory SYNOPSIS
globus-update-certificate-dir [-help] [-d DIRECTORY] DESCRIPTION
The globus-update-certificate-dir program creates symlinks between files (CA certificates, certificate revocation lists, signing policy, and certificate request configuration files) using the certificate hash the installed version of OpenSSL uses. OpenSSL 1.0.0 uses a different name hashing algorithm than previous versions, so CA distributions created with older versions of OpenSSL might not be able to locate trusted CAs and related files. Running globus-update-certificate-dir against a trusted CA directory will add symlinks to the files to the hash if needed. The full set of command-line options to globus-update-certificate-dir consists of: -help Display a help message to standard output and exit -d DIRECTORY Create links in the trusted CA directory DIRECTORY instead of using the default search path. ENVIRONMENT
If the following variables affect the execution of globus-update-certificate-dir X509_CERT_DIR Default trusted certificate directory. HOME Path to the current user's home directory. GLOBUS_LOCATION Path to the Globus installation. University of Chicago 02/18/2010 GLOBUS-UPDATE-CERT(8)

Featured Tech Videos

All times are GMT -4. The time now is 01:00 PM.
Unix & Linux Forums Content Copyright 1993-2020. All Rights Reserved.
Privacy Policy