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Bash Read Comma Separated CVS File

How do I read comma separated CVS file under UNIX / Linux / BSD / Mac OS X bash script? My sample file is as follows:

FirstName LastName,DOB,SSN,Telephone,Status


You can use while shell loop to read comma-separated cvs file. IFS variable will set cvs separated to , (comma). read command will read each line and store data into each field.

#!/bin/bash
INPUT=data.cvs
OLDIFS=$IFS
IFS=,
[ ! -f $INPUT ] && { echo "$INPUT file not found"; exit 99; }
while read flname dob ssn tel status
do
	echo "Name : $flname"
	echo "DOB : $dob"
	echo "SSN : $ssn"
	echo "Telephone : $tel"
	echo "Status : $status"
done < $INPUT
 IFS=$OLDIFS
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{ 10 comments… add one }

  • alexey February 8, 2011, 9:52 pm

    script that worked for me

    #!/bin/bash
    INPUT=./Zabbix_template_item.csv
    OLDIFS=$IFS
    IFS=";"
    [ ! -f $INPUT ] &while read Host Group itItemType itKey itValueType itDescription itDelay itHistory itTrends itDataType itUnits itMultiplier itDelta itFormula itParams itSnmpCom itSnmpOid itApplication
    do
            echo "Host : $Host"
            echo "Group : $Group"
            echo "itItemType : $itItemType"
            echo "itKey : $itKey"
            echo "itValueType : $itValueType"
            echo "itDescription : $itDescription"
            echo "itDelay : $itDelay"
            echo "itHistory : $itHistory"
            echo "itTrends : $itTrends"
            echo "itDataType : $itDataType"
            echo "itUnits : $itUnits"
            echo "itMultiplier : $itMultiplier"
            echo "itDelta : $itDelta"
            echo "itFormula : $itFormula"
            echo "itParams : $itParams"
            echo "itSnmpCom : $itSnmpCom"
            echo "itSnmpOid : $itSnmpOid"
            echo "itApplication : $itApplication"
    done < $INPUT
    IFS=$OLDIFS
    
    • Shazaad September 18, 2011, 7:30 am

      How to skip commented/blank lines in the CSV file?

    • roop February 7, 2014, 1:58 pm

      i have used the same code to read my csv file but i cant read the last row of my csv file using while loop. please help.

      • Jake October 22, 2014, 5:06 pm

        I’m having the same issue. The last row of my csv isn’t being read. Did you find a solution roop?

  • sunil May 17, 2012, 7:46 am

    I have two Csv files one is for daily report purposed and another is for daily data purposed.
    masterreport.csv file format is

    CODE,1-May-12,2-May-12,3-May-12,4-May-12,5-May-12,
    205,0,0,0,0,0,
    23070,0,0,0,0,0,
    Interface error response CRBT fail,0,1,0,0,0,
    C2S exception,0,1,2,0,2,
    Interface Customer Recharge Not Allowed For Receiver,2240,2078,2050,2007,2363,

    —–Many more up to 45 Rows and 32 column are there
    and every day we have to update the corresponding date part from below mention file.

    dailyreport.csv
    C2S ERROR EXCEPTION TAKING TIME TILL VALIDATION , 624
    CHNL_ERROR_SNDR_AMT_NOTBETWEEN_MINMAX , 56
    Card Group Slab Suspended , 7096

    like how many error’s are coming on that day we have to update the main report , which are not match daily report we put the value 0 on main report.

    i didn’t found any logic how to do this , can any body help this

  • bibliotranstornado May 31, 2012, 12:31 pm

    15 years working with csv files in bash and I didn’t know this method!

    Thanks a lot.

  • Dushyant October 20, 2012, 12:37 pm

    wow it’s really helpful.

    Thx.

  • lyonn July 15, 2013, 10:36 pm

    This way to get fields into a CSV is easy to use.

  • Damir September 10, 2013, 9:34 am

    Exactly what i needed.
    Thanx

  • Isaac June 4, 2015, 3:51 pm

    This was exactly what I needed! I’m using it to import account data from a Zimbra server backup.

    IE account names are stored in the CSV and the script runs the import command with the $flname variable in the appropriate spots.

    I do have a question, How does it know to hit the next line and not just read the first line every time? My assumption is that is what the $IFS & $OLDIFS variables do. But I’m not sure.

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