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Editorial Team
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Asked: 2026-06-11T00:53:05+00:00

I was searching for a means to format output from dmidecode a specific way,

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I was searching for a means to format output from dmidecode a specific way, and I found the following article which just about does what I need

http://www.experts-exchange.com/Programming/Languages/Scripting/Shell/Q_27770556.html

I modified some of the fields that I need from the code in the answer above, this shows awk creating csv output, with quotes, from dmidecode

dmidecode -t 17 | awk -F: '/Size|Locator|Speed|Manufacturer|Serial Number|Part Number/{sub(/^ */,"",$2);s=sprintf("%s,\"%s\"",s,$2)}/^Memory/{print s;s=""}END{print s}' |sed -e 's/,//' | grep -iv "no module" | tr -d ' '

"4096MB","CPU0","DIMM01","1066MHz","Samsung","754C2C33","M393B5273CH0-YH9"

I need tabbed, no quotes

4096MB  CPU0    DIMM01  1066MHz         Samsung         754C2C33        M393B5273CH0-YH9

I am still trying to get my head around awk and would appreciate anyone showing me the appropriate modifications

Fixed my code above, previously pasted non-working syntax

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1 Answer

  1. Editorial Team

    From the link you posted, I saved the data in a file called file.txt. I noticed that records are blank line separated. I used the following awk code:

    awk 'BEGIN { FS=":"; OFS="\t" } /Size|Locator|Speed|Manufacturer|Serial Number|Part Number/ { gsub(/^[ \t]+/,"",$2); line = (line ? line OFS : "") $2 } /^$/ { print line; line="" }' file.txt

    Results:

    2048 MB XMM1    Not Specified   1333 MHz    JEDEC ID    8106812F      HMT125U6BFR8C-H9
No Module Installed XMM2    Not Specified   Unknown JEDEC ID        
2048 MB XMM3    Not Specified   1333 MHz    JEDEC ID    7006C12F    HMT125U6BFR8C-H9
No Module Installed XMM4    Not Specified   Unknown JEDEC ID        
4096 kB SYSTEM ROM  Not Specified   Unknown Not Specified   Not Specified   Not Specified

    Your command line would now look like this:

    dmidecode -t 17 | awk 'BEGIN { FS=":"; OFS="\t" } /Size|Locator|Speed|Manufacturer|Serial Number|Part Number/ { gsub(/^[ \t]+/,"",$2); line = (line ? line OFS : "") $2 } /^$/ { print line; line="" }' | grep -iv "no module"

    EDIT:

    dmidecode -t 17 | awk 'BEGIN { FS=":"; OFS="\t" } /Size|Locator|Speed|Manufacturer|Serial Number|Part Number/ { if ($2 ~ /MB$|MHz$/) { gsub(/[ \t]+/,"",$2) } gsub(/^[ \t]+/,"",$2); line = (line ? line OFS : "") $2 } /^$/ { print line; line="" }' | grep -iv "no module"
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