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For [[Linux/Debian|Debian]]-based distributions, consider using the interactive '''`dpkg-reconfigure tzdata`''' script.

Linux Clock

On Linux, the clock generally uses UTC time with a timezone offset in software, as opposed to local time.

Contents

  1. Linux Clock
    1. Date and Time
    2. Timezone

Date and Time

Use date(1) as the root user to set the current date and time. 

# January 1st, 2001 at 12:30
sudo date 0101011230

Use hwclock(1) or timedatectl(1) to check the CMOS clock.

Timezone

The configured timezone is set in /etc/localtime. By standard convention, this should be a symbolic link to a pre-prepared file, typically under /usr/share/zoneinfo.

To check the current configuration, try: 

realpath /etc/localtime

To change the configuration, try: 

ln -sf /usr/share/zoneinfo/America/New_York /etc/localtime

For Debian-based distributions, consider using the interactive dpkg-reconfigure tzdata script.

For systemd-capable systems, consider using timedatectl(1).

Some utilities will also respect a TZ environment variable. 

export TZ=America/New_York
date

CategoryRicottone

Linux/Clock (last edited 2023-06-29 17:16:15 by DominicRicottone)