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OSMIUM-MERGE(1) OSMIUM-MERGE(1) NAME osmium-merge - merge several sorted OSM files into one SYNOPSIS osmium merge [OPTIONS] OSM-FILE... DESCRIPTION Merges the content of all OSM files given on the command line into one large OSM file. Objects in all files must be sorted by type, ID, and ver- sion. The results will also be sorted in the same way. Objects that ap- pear in multiple input files will only be in the output once. If there is only a single input file, its contents will be copied to the output. If there are different versions of the same object in the input files, all versions will appear in the output. So this command will work fine with history files as input creating a new history file. Do not use this com- mand to merge non-history files with data from different points in time. It will not work correctly. If you have objects with the same type, id, and version but different other data, the result of this command is undefined. This situation can never happen in correct OSM files, but sometimes buggy programs can generate data like this. Osmium doesn't make any promises on what the result of the com- mand is if the input data is not correct. This commands reads its input file(s) only once and writes its output file in one go so it can be streamed, ie. it can read from STDIN and write to STDOUT. OPTIONS -H, --with-history Do not warn when there are multiple versions of the same object in the input files. COMMON OPTIONS -h, --help Show usage help. -v, --verbose Set verbose mode. The program will output information about what it is doing to STDERR. --progress Show progress bar. Usually a progress bar is only displayed if STD- OUT and STDERR are detected to be TTY. With this option a progress bar is always shown. Note that a progress bar will never be shown when reading from STDIN or a pipe. --no-progress Do not show progress bar. Usually a progress bar is displayed if STDOUT and STDERR are detected to be a TTY. With this option the progress bar is suppressed. Note that a progress bar will never be shown when reading from STDIN or a pipe. INPUT OPTIONS -F, --input-format=FORMAT The format of the input file(s). Can be used to set the input for- mat if it can't be autodetected from the file name(s). This will set the format for all input files, there is no way to set the for- mat for some input files only. See osmium-file-formats(5) or the libosmium manual for details. OUTPUT OPTIONS -f, --output-format=FORMAT The format of the output file. Can be used to set the output file format if it can't be autodetected from the output file name. See osmium-file-formats(5) or the libosmium manual for details. --fsync Call fsync after writing the output file to force flushing buffers to disk. --generator=NAME The name and version of the program generating the output file. It will be added to the header of the output file. Default is "os- mium/" and the version of osmium. -o, --output=FILE Name of the output file. Default is `-' (STDOUT). -O, --overwrite Allow an existing output file to be overwritten. Normally osmium will refuse to write over an existing file. --output-header=OPTION=VALUE Add output header option. This command line option can be used mul- tiple times for different OPTIONs. See the osmium-output-headers(5) man page for a list of available header options. For some commands you can use the special format "OPTION!" (ie. an exclamation mark after the OPTION and no value set) to set the value to the same as in the input file. DIAGNOSTICS osmium merge exits with exit code 0 if everything went alright, 1 if there was an error processing the data, or 2 if there was a problem with the command line arguments. MEMORY USAGE osmium merge doesn't keep a lot of data in memory, but if you are merging many files, the buffers might take a noticeable amount of memory. EXAMPLES Merge several extracts into one: osmium merge washington.pbf oregon.pbf california.pbf -o westcoast.pbf SEE ALSO * osmium(1), osmium-file-formats(5), osmium-output-headers(5), os- mium-merge-changes(1) * Osmium website COPYRIGHT Copyright (C) 2013-2026 Jochen Topf <jochen@topf.org>. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/li- censes/gpl.html>. This is free software: you are free to change and redis- tribute it. There is NO WARRANTY, to the extent permitted by law. CONTACT If you have any questions or want to report a bug, please go to https://osmcode.org/contact.html AUTHORS Jochen Topf <jochen@topf.org>. 1.19.0 OSMIUM-MERGE(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | COMMON OPTIONS | INPUT OPTIONS | OUTPUT OPTIONS | DIAGNOSTICS | MEMORY USAGE | EXAMPLES | SEE ALSO | COPYRIGHT | CONTACT | AUTHORS
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