Linux Manuals

update-catalog – create or update entry in SGML catalog file Synopsis update-catalog [options] –add centralized_catalog ordinary_catalog update-catalog [options] –remove centralized_catalog ordinary_catalog update-catalog [options] –update-super Description update-catalog inserts, updates or removes entries in the SGML centralized catalogs located in /etc/sgml. To change the SGML super catalog located in /etc/sgml/catalog modify the directory contents of /etc/sgml to…

update-ca-trust – manage consolidated and dynamic configuration of CA certificates and associated trust Synopsis update-ca-trust [COMMAND] Description update-ca-trust(8) is used to manage a consolidated and dynamic configuration feature of Certificate Authority (CA) certificates and associated trust. The feature is available for new applications that read the consolidated configuration files found in the /etc/pki/ca-trust/extracted directory or…

update-ca-certificates – update /etc/ssl/certs and ca-certificates.crt Synopsis update-ca-certificates [options] Description This manual page documents briefly the update-ca-certificates command. update-ca-certificates is a program that updates the directory /etc/ssl/certs to hold SSL certificates and generates ca-certificates.crt, a concatenated single-file list of certificates. It reads the file /etc/ca-certificates.conf. Each line gives a pathname of a CA certificate under…

update-binfmts – maintain registry of executable binary formats Synopsis update\-binfmts [options ] –-install name path spec update\-binfmts [options ] –-remove name path update\-binfmts [options ] –-import [name ] update\-binfmts [options ] –-unimport [name ] update\-binfmts [options ] –-display [name ] update\-binfmts [options ] –-enable [name ] update\-binfmts [options ] –-disable [name ] update\-binfmts [options ]…

update-apt-xapian-index – rebuild the Apt Xapian Index Synopsis update-apt-xapian-index [options] Description Rebuild the Apt Xapian index Options –version show program’s version number and exit -h, –help show this help message and exit -q, –quiet quiet mode: only output fatal errors -v, –verbose verbose mode -f, –force force database rebuild even if it’s already up to…

unmkinitramfs – extract content from an initramfs image Synopsis unmkinitramfs [-v] initramfs-file directory unmkinitramfs -h Description The unmkinitramfs command extracts the content of a given initramfs image using cpio. If the image contains multiple segments, each are passed to cpio in order. Options -h Display usage information and exit. -v Display verbose messages about extraction….

unix_update – Helper binary that updates the password of a given user Synopsis unix_update […] Description unix_update is a helper program for the pam_unix module that updates the password of a given user. It is not intended to be run directly from the command line and logs a security violation if done so. The purpose…

unix_chkpwd – Helper binary that verifies the password of the current user Synopsis unix_chkpwd […] Description unix_chkpwd is a helper program for the pam_unix module that verifies the password of the current user. It also checks password and account expiration dates in shadow. It is not intended to be run directly from the command line…

unhide — forensic tool to find hidden processes Synopsis unhide [OPTIONS] TEST_LIST unhide-posix proc | sys Description unhide is a forensic tool to find processes hidden by rootkits, Linux kernel modules or by other techniques. It detects hidden processes using six techniques. Options Options are only available for unhide-linux not for unhide-posix. -d Do a…

unhide-tcp — forensic tool to find hidden TCP/UDP ports Synopsis unhide-tcp [options] Description unhide-tcp is a forensic tool that identifies TCP/UDP ports that are listening but are not listed by /sbin/ss (or alternatively by /bin/netstat) through brute forcing of all TCP/UDP ports available. Note1 : On FreeBSD ans OpenBSD, netstat is allways used as iproute2…

 * Name unexpunge – restore expunged (but yet unremoved) messages Synopsis unexpunge [ -C config-file ] -l mailbox unexpunge [ -C config-file ] -t time-interval [ -d ] [ -v ] mailbox unexpunge [ -C config-file ] -a [ -d ] [ -v ] mailbox unexpunge [ -C config-file ] -u [ -d ] […

unconfined_service_selinux – Security Enhanced Linux Policy for the unconfined_service processes Description Security-Enhanced Linux secures the unconfined_service processes via flexible mandatory access control. The unconfined_service processes execute with the unconfined_service_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. For example: ps -eZ | grep…

unconfined_sendmail_selinux – Security Enhanced Linux Policy for the unconfined_sendmail processes Description Security-Enhanced Linux secures the unconfined_sendmail processes via flexible mandatory access control. The unconfined_sendmail processes execute with the unconfined_sendmail_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. For example: ps -eZ | grep…

unconfined_r – Unconfined user role – Security Enhanced Linux Policy Description SELinux supports Roles Based Access Control (RBAC), some Linux roles are login roles, while other roles need to be transition into. Note: Examples in this man page will use the staff_u SELinux user. Non login roles are usually used for administrative tasks. For example,…

unconfined_munin_plugin_selinux – Security Enhanced Linux Policy for the unconfined_munin_plugin processes Description Security-Enhanced Linux secures the unconfined_munin_plugin processes via flexible mandatory access control. The unconfined_munin_plugin processes execute with the unconfined_munin_plugin_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. For example: ps -eZ | grep…

unconfined_mount_selinux – Security Enhanced Linux Policy for the unconfined_mount processes Description Security-Enhanced Linux secures the unconfined_mount processes via flexible mandatory access control. The unconfined_mount processes execute with the unconfined_mount_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. For example: ps -eZ | grep…

unconfined_dbusd_selinux – Security Enhanced Linux Policy for the unconfined_dbusd processes Description Security-Enhanced Linux secures the unconfined_dbusd processes via flexible mandatory access control. The unconfined_dbusd processes execute with the unconfined_dbusd_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. For example: ps -eZ | grep…

unconfined_cronjob_selinux – Security Enhanced Linux Policy for the unconfined_cronjob processes Description Security-Enhanced Linux secures the unconfined_cronjob processes via flexible mandatory access control. The unconfined_cronjob processes execute with the unconfined_cronjob_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. For example: ps -eZ | grep…

unbound – Unbound DNS validating resolver 1.4.20. Synopsis unbound [-h] [-d] [-v] [-c cfgfile] Description Unbound is an implementation of a DNS resolver, that does caching and DNSSEC validation. The available options are: -h Show the version and commandline option help. -c cfgfile Set the config file with settings for unbound to read instead of…

unbound-control, unbound-control-setup – Unbound remote server control utility. Synopsis unbound-control [-hq] [-c cfgfile] [-s server] command Description Unbound-control performs remote administration on the unbound(8) DNS server. It reads the configuration file, contacts the unbound server over SSL sends the command and displays the result. The available options are: -h Show the version and commandline option…