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Full Discussion: left join using awk
Top Forums Shell Programming and Scripting left join using awk Post 302659963 by g1org1o on Thursday 21st of June 2012 06:00:34 PM
Old 06-21-2012
left join using awk

Hi guys,

I need to use awk to join 2 files

file_1
A 001
B 002
C 003

file_2
A XX1
B XX2

output desired
A 001 XX1
B 002 missing
C 003 XX2

thank you!
 

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DAHDI_HARDWARE(8)					User Contributed Perl Documentation					 DAHDI_HARDWARE(8)

NAME
dahdi_hardware - Shows Dahdi hardware devices. SYNOPSIS
dahdi_hardware [-v][-x] OPTIONS
-v Verbose ouput - show spans used by each device etc. Currently only implemented for the Xorcom Astribank. -x Show disconnected Astribank unit, if any. DESCRIPTION
Show all dahdi hardware devices. Devices are recognized according to lists of PCI and USB IDs in Dahdi::Hardware::PCI.pm and Dahdi::Hardware::USB.pm . For PCI it is possible to detect by sub-vendor and sub-product ID as well. The first output column is the connector: a bus specific field that shows where this device is. The second field shows which driver should handle the device. a "-" sign marks that the device is not yet handled by this driver. A "+" sign means that the device is handled by the driver. For the Xorcom Astribank (and in the future: for other Dahdi devices) some further information is provided from the driver. Those extra lines always begin with spaces. Example output: Without drivers loaded: usb:001/002 xpp_usb- e4e4:1152 Astribank-multi FPGA-firmware usb:001/003 xpp_usb- e4e4:1152 Astribank-multi FPGA-firmware pci:0000:01:0b.0 wctdm- e159:0001 Wildcard TDM400P REV H With drivers loaded, without -v: usb:001/002 xpp_usb+ e4e4:1152 Astribank-multi FPGA-firmware usb:001/003 xpp_usb+ e4e4:1152 Astribank-multi FPGA-firmware pci:0000:01:0b.0 wctdm+ e159:0001 Wildcard TDM400P REV E/F With drivers loaded, with -v: usb:001/002 xpp_usb+ e4e4:1152 Astribank-multi FPGA-firmware LABEL=[usb:123] CONNECTOR=usb-0000:00:1d.7-1 XBUS-00/XPD-00: FXS Span 2 XBUS-00/XPD-10: FXS Span 3 XBUS-00/XPD-20: FXS Span 4 XBUS-00/XPD-30: FXS Span 5 usb:001/003 xpp_usb+ e4e4:1152 Astribank-multi FPGA-firmware LABEL=[usb:4567] CONNECTOR=usb-0000:00:1d.7-4 XBUS-01/XPD-00: FXS Span 6 XPP-SYNC XBUS-01/XPD-10: FXO Span 7 XBUS-01/XPD-20: FXO Span 8 XBUS-01/XPD-30: FXO Span 9 pci:0000:01:0b.0 wctdm+ e159:0001 Wildcard TDM400P REV E/F perl v5.14.2 2009-04-20 DAHDI_HARDWARE(8)
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