universidad del cauca red de datos module 4 directory and file commands

Universidad del CaucaRed de Datos

Module 4

Directory and File commands


Use control characters

Erase Control+H Backspace erases charactersIntr Control+C Interrupt: Cancel the current operation and

redisplay the command-line prompt.Suspend Control+Z Suspend an operation or application.EOF Control+D Send an End Of FileCopy Control+UPaste Control+Y


file command

" Dertermines file typebin: directory

proftpd-1.2.4.tar.gz: gzip compressed data - deflate method , original file name

mail.h: ascii text

so-5_2-ga-bin-solsparc-en.bin: ELF 32-bit MSB executable SPARC Version 1, dynamically linked, stripped


Working with files

" cat" more" head" tail" wc" touch" tee


Working with directories

" Create directories mkdir" Remove files and directories rm" Copy files and directories cp" Move and rename files and

directorios mv


Module 5

Searching for files and text


Find files and searching text

" find <path> -name <criteria>" find /export/home –name archive" grep <string> <file1> [file2

file3 ....]


Sorting

sort-f

-r


Comparing

difftext files

diff <file1> <file2>

Files in directoriesDiff –r –s dir1 dir2


Seguridad de Archivos I

" Control de acceso a los archivos

" Permisos básicosr – Read

x – EXecution

w – Write


Seguridad de Archivos II

" Categorias de los permisosSelf

Group

Others


Ejemplo> ls -l

total 13842

drwxr-xr-x 2 mconsta root 512 Apr 9 20:46 Curso

-rw-r--r-- 1 mconsta root 17333 Apr 2 21:13 Makefile

-rw-r--r-- 1 mconsta root 1699 Apr 1 22:32 arch.dsk

-rw-r--r-- 1 root other 1431 Apr 5 08:47 peticiones.txt

-rwx--x--x 1 mconsta root 1199716 Nov 26 04:58 pico


Cambiar permisos I

" Chmodu – user

g - grupo

o - others

a – all

" + , -


Cambiar permisos II

" Chmod codigo archivoRead 4

Write 2

Execute 1

universidad del cauca red de datos module 4 directory and file commands

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