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Top Forums Shell Programming and Scripting Print matching fields (if they exist) from two text files Post 302988535 by bakunin on Tuesday 27th of December 2016 03:37:20 PM
Old 12-27-2016
Quote:
Originally Posted by gacanepa
I tried with the following join command:
Code:
join -t, -1 1 -2 1 -o 1.1 2.2 -a 1 -a 2 test1 test2

but it only complies with requirement 2 above and leaves non-matching fields empty:
Yes: works as designed. ;-)

The join-command follows your orders to include non-matched lines (the "-a") and therefore you see these lines in the output. Depending on what exactly you want leave out "-a 1" or "-a 2" or both. Add a "1.2" to your output rules as fallback.

I hope this helps.

bakunin
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music123(1)						      General Commands Manual						       music123(1)

NAME
music123 - plays various sound files (usually including MP3, Ogg and Wav). SYNOPSIS
music123 [ -hqrvz ] file ... DESCRIPTION
music123 is a shell around various command line programs to play music files. It will descend directories trees with -r, and randomize file lists with -z. The programs used and the options given them are listed in /etc/music123rc or ~/.music123rc. OPTIONS
-h Show command help and exit; -q Quiet mode. No messages are displayed. -r Recurse into directories, instead of ignoring them. -v Display version information and exit. -z Play files in random order. -Z Play the files randomly and endlessly. -l Loop. -z -l differs from -Z in that -z -l will randomize, play through the song list (without repetition) in random order once, and repeat the songs in that order over and over; -Z will randomly play the songs, without any order, and will possibly play a song right after itself. -i Ignore extension case. -L List files and exit. -T Start a task that handle commands, only one command supported : quit, using q or Q will quit the application at the end of the cur- rent song. -D Set music123 not to delay between songs. (May make music123 harder to kill). -d Customize the time music123 delays between songs. -d takes one argument, expressed in seconds, which may have a fractional part. -@ Play the files listed in the mandatory argument of -@. Other files can be added on the command line, and this option can be given several times. Note that music123 doesn't yet play URLs. -- End option list. EXAMPLES
Play three songs: music123 test1.ogg test2.mp3 test3.wav Play a couple of directories and other songs at random: music123 -z -r Rock/ test1.ogg Pop/ test4.wav FILES
/etc/music123rc Describes which programs music123 uses, which files types it supports, and which options it passes those programs. ~/.music123rc Per-user config file to override the system wide settings. AUTHORS
Authors: David Starner <dvdeug@debian.org> July 24, 2002 music123(1)
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