change and print terminal line settings NAME stty - change and print terminal line settings SYNOPSIS stty [ -F DEVICE | --file=DEVICE ] [ SETTING ]... stty [ -F DEVICE | --file=DEV…run a command with substitute user and group ID NAME su - run a command with substitute user and group ID SYNOPSIS su [options] [ - ] [ user [ argument ...]] DESCRIPTION su allows …run a command with substitute user and group ID NAME runuser - run a command with substitute user and group ID SYNOPSIS runuser [options] -u user [[--] command [ argument ...]] run…begin session on the system NAME login - begin session on the system SYNOPSIS login [ -p ] [ -h host ] [ -H ] [ -f username | username ] DESCRIPTION login is used when signing onto…Query the user for a system password NAME systemd-ask-password - Query the user for a system password SYNOPSIS systemd-ask-password [OPTIONS...] [MESSAGE] DESCRIPTION systemd-ask-p…administer /etc/group and /etc/gshadow NAME gpasswd - administer /etc/group and /etc/gshadow SYNOPSIS gpasswd [ option ] group DESCRIPTION The gpasswd command is used to administer…change user password NAME passwd - change user password SYNOPSIS passwd [ options ] [ LOGIN ] DESCRIPTION The passwd command changes passwords for user accounts. A normal user may …define a new PostgreSQL user account NAME createuser - define a new PostgreSQL user account SYNOPSIS createuser [ connection-option ...] [ option ...] [ username ] DESCRIPTION crea…display a line of text NAME echo - display a line of text SYNOPSIS echo [ SHORT-OPTION ]... [ STRING ]... echo LONG-OPTION DESCRIPTION Echo the STRING(s) to standard output. -n do …make typescript of terminal session NAME script - make typescript of terminal session SYNOPSIS script [options] [ file ] DESCRIPTION script makes a typescript of everything on your…manage locks from shell scripts NAME flock - manage locks from shell scripts SYNOPSIS flock [options] file | directory command [ arguments ] flock [options] file | directory -c com…check the connection status of a PostgreSQL server NAME pg_isready - check the connection status of a PostgreSQL server SYNOPSIS pg_isready [ connection-option ...] [ option ...] D…expand metacharacters NAME lessecho - expand metacharacters SYNOPSIS lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-a] file ... DESCRIPTION lessecho is a program that simply …communicate with debconf NAME debconf-communicate - communicate with debconf SYNOPSIS echo commands | debconf-communicate [options] [package] DESCRIPTION debconf-communicate allows…re-run session typescripts, using timing information NAME scriptlive - re-run session typescripts, using timing information SYNOPSIS scriptlive [options] timingfile typescript DESC…execute a program periodically, showing output fullscreen NAME watch - execute a program periodically, showing output fullscreen SYNOPSIS watch [ options ] command DESCRIPTION watc…create a zip file from stdin NAME streamzip - create a zip file from stdin SYNOPSIS producer | streamzip [opts] | consumer producer | streamzip [opts] -zipfile=output.zip DESCRIPTI…remove a PostgreSQL user account NAME dropuser - remove a PostgreSQL user account SYNOPSIS dropuser [ connection-option ...] [ option ...] [ username ] DESCRIPTION dropuser removes…remove a PostgreSQL database NAME dropdb - remove a PostgreSQL database SYNOPSIS dropdb [ connection-option ...] [ option ...] dbname DESCRIPTION dropdb destroys an existing Postgr…cluster a PostgreSQL database NAME clusterdb - cluster a PostgreSQL database SYNOPSIS clusterdb [ connection-option ...] [ option ...] [ --table | -t table ]... [ dbname | -a | --a…