1tzselect(8) System Manager's Manual tzselect(8) 2 3NAME 4 tzselect - select a timezone 5 6SYNOPSIS 7 tzselect [ -c coord ] [ -n limit ] [ --help ] [ --version ] 8 9DESCRIPTION 10 The tzselect program asks the user for information about the current 11 location, and outputs the resulting timezone to standard output. The 12 output is suitable as a value for the TZ environment variable. 13 14 All interaction with the user is done via standard input and standard 15 error. 16 17OPTIONS 18 -c coord 19 Instead of asking for continent and then country and then city, 20 ask for selection from time zones whose largest cities are 21 closest to the location with geographical coordinates coord. 22 Use ISO 6709 notation for coord, that is, a latitude immediately 23 followed by a longitude. The latitude and longitude should be 24 signed integers followed by an optional decimal point and 25 fraction: positive numbers represent north and east, negative 26 south and west. Latitudes with two and longitudes with three 27 integer digits are treated as degrees; latitudes with four or 28 six and longitudes with five or seven integer digits are treated 29 as DDMM, DDDMM, DDMMSS, or DDDMMSS representing DD or DDD 30 degrees, MM minutes, and zero or SS seconds, with any trailing 31 fractions represent fractional minutes or (if SS is present) 32 seconds. The decimal point is that of the current locale. For 33 example, in the (default) C locale, -c +40.689-074.045 specifies 34 40.689 degrees N, 74.045 degrees W, -c +4041.4-07402.7 specifies 35 40 degrees 41.4 minutes N, 74 degrees 2.7 minutes W, and 36 -c +404121-0740240 specifies 40 degrees 41 minutes 21 seconds N, 37 74 degrees 2 minutes 40 seconds W. If coord is not one of the 38 documented forms, the resulting behavior is unspecified. 39 40 -n limit 41 When -c is used, display the closest limit locations (default 42 10). 43 44 --help Output help information and exit. 45 46 --version 47 Output version information and exit. 48 49ENVIRONMENT VARIABLES 50 AWK Name of a POSIX-compliant awk program (default: awk). 51 52 TZDIR Name of the directory containing timezone data files (default: 53 /usr/share/zoneinfo). 54 55FILES 56 TZDIR/iso3166.tab 57 Table of ISO 3166 2-letter country codes and country names. 58 59 TZDIR/zone1970.tab 60 Table of country codes, latitude and longitude, timezones, and 61 descriptive comments. 62 63 TZDIR/TZ 64 Timezone data file for timezone TZ. 65 66EXIT STATUS 67 The exit status is zero if a timezone was successfully obtained from 68 the user, nonzero otherwise. 69 70SEE ALSO 71 newctime(3), tzfile(5), zdump(8), zic(8) 72 73NOTES 74 Applications should not assume that tzselect's output matches the 75 user's political preferences. 76 77Time Zone Database tzselect(8) 78