Con el comando "man" podemos la documentacion realacionada a un comando ó archivo, alguna de las opciones utilies a utilizar en este comando son:
- s: para especificar la sección o pagina a visualizar.
- k: para especificar una busqueda en los manuales asociados a una palabra clave.
Ejemplos:
1)
johnny@debianJG:~$ man -f passwd
passwd (1) - change user password
passwd (5) - the password file
passwd (1ssl) - compute password hashes
similar en solaris (man -l passwd)
Los campos especificados entre parentesis indican la sección o pagina a visualizar para obtener mayor informacion del comando u archivo.
Para mayor información sobre las secciones o pagina pueden consultar el man del man.
...
The table below shows the section numbers of the manual followed by the types of pages they contain.
1 Executable programs or shell commands
2 System calls (functions provided by the kernel)
3 Library calls (functions within program libraries)
4 Special files (usually found in /dev)
5 File formats and conventions eg /etc/passwd
6 Games
7 Miscellaneous (including macro packages and conven‐
tions), e.g. man(7), groff(7)
8 System administration commands (usually only for root)
9 Kernel routines [Non standard]...
2)
man -s número comando -> man -s 1 passwd
man -s número archivo -> man -s 5 passwd
3)
johnny@debianJG:~$ man -k passwd
chgpasswd (8) - update group passwords in batch mode
chpasswd (8) - update passwords in batch mode
exim4_passwd (5) - Files in use by the Debian exim4 packages
exim4_passwd_client (5) - Files in use by the Debian exim4 packages
fgetpwent_r (3) - get passwd file entry reentrantly
getpwent_r (3) - get passwd file entry reentrantly
gpasswd (1) - administer /etc/group and /etc/gshadow
grub-mkpasswd-pbkdf2 (1) - generate hashed password for GRUB
lppasswd (1) - add, change, or delete digest passwords.
mkpasswd (1) - Overfeatured front end to crypt(3)
pam_localuser (8) - require users to be listed in /etc/passwd
passwd (1) - change user password
passwd (1ssl) - compute password hashes
passwd (5) - the password file
passwd2des (3) - RFS password encryption
SSL_CTX_set_default_passwd_cb (3ssl) - set passwd callback for encrypted PEM file handling
SSL_CTX_set_default_passwd_cb_userdata (3ssl) - set passwd callback for encrypted PEM file handling
update-passwd (8) - safely update /etc/passwd, /etc/shadow and /etc/group
vnc4passwd (1) - change a VNC password
vncpasswd (1) - change a VNC password
Esta última es similar al utilizar el comando whatis -r passwd.
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