Linux Commands Reference - Complete Linux Command Guide
Comprehensive Linux command reference with 150+ commands. Search, filter by category, and view detailed usage examples.
join
Join two files on a common field
Syntax
join [OPTION]... FILE1 FILE2Common Options
-tSpecify separator-1Join field for FILE1-2Join field for FILE2-aShow unpairable lines-vShow only unpairable lines-iIgnore case-oCustom output formatCommon Examples
join file1.txt file2.txtJoin on first field
join -t "," file1.csv file2.csvJoin CSV files
join -1 2 -2 1 file1.txt file2.txtSpecify join fields
join -a 1 file1.txt file2.txtShow all FILE1 lines
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