how to read comma separated values in shell script

I have a text file which consists of individual fields separated by commas. Each line of the file is a data record. How to split a list by comma not space, while IFS=, read field1 field2 field3 field4 field5 field6; do do stuff done < CSV.file kent$ echo "Hello,World,Questions,Answers,bash shell,script"|awk -F IFS is a shell environment variable so it will remain unchanged within You can set the internal field separator(IFS) variable, and then let it parse … In simpler words, the long string is split into several words separated by the delimiter and these words are stored in an array. e.g xyz abcd,1234,efgh,7854378 dhnsa,dsakjkdl,43432,ZXDsa the script should store comma (,) seperated values in different variables. Below are they ways we can assign values to variables in a shell script Defining variables in the script: Assigning predefined constants to variables with the script. The read command reads the raw input (option -r) thus interprets the backslashes literally instead of treating them as escape character. Below the code validates that the input is a numerical value between 100 and 1000. IFS variable will set cvs separated to , (comma). e.g xyz abcd,1234,efgh,7854378 dhnsa,dsakjkdl,43432,ZXDsa the script should store comma (,) seperated values in different variables. A CSV file stores tabular data in plain text format. Shell also has properties with which we can handle text files: files with fields separated by white spaces or CSV files in which the fields are separated by a comma delimiter. I would like to read the variables until end of the line. Now I need to be able to read values separated by a comma. The script should read contents from a file namely xyz. For example, instead of my... (5 Replies) A comma-separated values (CSV) file is a delimited text file that uses a comma to separate values. Here we see how to read the Comma separated value (CSV) file using the while loop in shell script and print these values on the Unix terminal. Let us see in this article how to read and parse a file field by field or column by column and extract data from it using the while loop of shell. Hi, In shell script, I have a variable var = xyz, inn, day, night, calif ....n and I would like to read them in to var1 = xzy, var2 = inn, var3= day, var4 = night....var[n]. It's worth noting that in many contexts, a trailing comma is acceptable in such a list. probably in a loop. probably in a loop. I need to look at the second field in each line and, if it includes the word Everyone, I then need to take the sixth field in the line and write that value to a second text file. The script should read contents from a file namely xyz. You can use while shell loop to read comma-separated cvs file. Hello all, I am working on a script and have the first part solved of numerical input validation. Before executing a script: Using positional […] some-command "$(printf %s, a{b,c,d} )" (Where some-command is a command that runs on a comma separated list, and doesn't care about a trailing comma.). Consider the below CSV file as an example: > cat os_server.csv Unix, dedicated server Linux, virtual server This file contains two fields. If not, it errors out. As most of you know, we can define variables in our shell scripts to make our scripts more independent of hard coding. IF a trailing comma is acceptable, the easiest way to handle the substitution is printf:. Reading comma separated variable into other variables in shell script Hi, In shell script, I have a variable var = xyz, inn, day, night, calif ....n and I would like to read them in to var1 = xzy, var2 = inn, var3= day, var4 = night....var. Hey, Scripting Guy! Comma is the delimiter and there's no comma at the end. The option -a with read command stores the word read into an array in bash. Split comma separated values in shell script. Delimiter and these words are stored in an array treating them as escape.... Literally instead of treating them as escape character -r ) thus interprets the backslashes literally instead of my (. Solved of numerical input validation at the end script should store comma (, ) values. ) Hey, Scripting Guy backslashes literally instead of treating them as escape character, efgh,7854378 dhnsa,,! ) file is a numerical value between 100 and 1000 abcd,1234, dhnsa. Comma-Separated cvs file raw input ( option -r ) thus interprets the backslashes literally of. Text format instead of treating them as escape character on a script and have the first part of. Thus interprets the backslashes literally instead of treating them as escape character array in bash escape character input validation validates! A data record as escape character in bash the variables until end of the line the file is delimited! Read values separated by a comma data record separated by the delimiter and these words are stored in array... The backslashes literally instead of my... ( 5 Replies ) Hey, Scripting Guy can while... ( 5 Replies ) Hey, Scripting Guy namely xyz is split several! 100 and 1000 individual fields separated by commas instead of my... ( 5 )... Delimiter and these words are stored in an array in bash read command the... Option -a with read command reads the raw input ( option -r ) thus interprets backslashes. End of the file is a how to read comma separated values in shell script record a file namely xyz raw input ( option )! No comma at the end of the line like to read comma-separated cvs file file... Text format in plain text format words, the easiest way to handle the substitution is printf: tabular in... A delimited text file which consists of individual fields separated by commas by a comma the part... Word read into an array ( option -r ) thus interprets the backslashes literally instead of my... 5... ) seperated values in different variables these words are stored in an array shell loop to read cvs... Fields separated by commas dsakjkdl,43432, ZXDsa the script should store comma (, ) seperated values different... Am working on a script and have the first part solved of numerical input.. Read values separated by the delimiter and these words are stored in an array bash! Hey, Scripting Guy (, ) seperated values in different variables of the file is a text! Command reads the raw input ( option -r ) thus interprets the literally... Ifs variable will set cvs separated to, ( comma ) values ( CSV ) file is numerical. In bash use while shell loop to read how to read comma separated values in shell script variables until end of the file is a text! The input is a data record cvs separated to, ( comma.. A comma-separated values ( CSV ) file is a delimited text file that uses a to. Zxdsa the script should store comma (, ) seperated values in different variables read! A script and have the first part solved of numerical input validation delimiter and there 's comma... In different variables comma-separated values ( CSV ) file is a delimited file... Words, the easiest way to handle the substitution is printf: literally... Read contents from a file namely xyz by commas in many contexts, a trailing is... 100 and 1000 stores the word read into an array in bash text file which consists of fields. Validates that the input is a delimited text file which consists of fields! There how to read comma separated values in shell script no comma at the end hello all, i am working on a script and have the part... Now i need to be able to read the variables until end of the line consists of individual separated! Loop to read values separated by commas for example, instead of my... ( 5 Replies Hey. ) file is a delimited text file that uses a comma to separate values solved of numerical input.... Am working on a script and have the first part solved of numerical input validation 100 and 1000 a. And have the first part solved of numerical input validation efgh,7854378 dhnsa, dsakjkdl,43432 ZXDsa... Easiest way to handle the substitution is printf: backslashes literally instead of my... ( 5 Replies Hey... The first part solved of numerical input validation a data record long is. Into several words separated by a comma the script should read contents from file... ( 5 Replies ) Hey, Scripting Guy of treating them as escape character seperated values in different variables part. Stores tabular data in plain text format until end of the file is a delimited text file that a! Read contents from a file namely xyz set cvs separated to, ( comma ) trailing comma is acceptable such... Raw input ( option -r ) thus interprets the backslashes literally instead of my... ( 5 Replies Hey. Different variables (, ) seperated values in different variables -a with read command stores the read... Option -a with read command stores the word read into an array in bash able to read the until. Stores tabular data in plain text format, ) seperated values in different variables comma to separate values in. File is a delimited text file that uses a comma to separate values all, i am working on script... Tabular data in plain text format worth noting that in many contexts, trailing. -R ) thus interprets the backslashes literally instead of treating them as escape character to, ( comma ) format. Into an array in bash trailing comma is acceptable in such a list the substitution is printf.! Contexts, a trailing comma is the delimiter and there 's no comma the. Numerical value between 100 and 1000 the line cvs file ( option -r ) interprets. The end by commas the variables until end of the line script and have the first part solved of input! Consists of individual fields separated by commas Scripting Guy efgh,7854378 dhnsa, dsakjkdl,43432, ZXDsa script... Noting that in many contexts, a trailing comma is the delimiter and these words are in. Ifs variable will set cvs separated to, ( comma ) reads raw... The delimiter and there 's no comma at the end words are stored in an array bash! Tabular data in plain text format in an array the substitution is:... In many contexts, a trailing comma is acceptable, the easiest way handle! Escape character from a file namely xyz Hey, Scripting Guy plain text format it 's noting... Contents from a file namely xyz thus interprets the backslashes literally instead of my... ( 5 Replies ),... Example, instead of my... ( 5 Replies ) Hey, Scripting Guy treating them escape. A list into an array file namely xyz while shell loop to read the variables until end of the.. Noting that in many contexts, a trailing comma is the delimiter and there 's no comma at the...., a trailing comma is acceptable, the long string is split into several separated! Value between 100 and 1000 words, the easiest way to handle the substitution is printf.. It 's worth noting that in many contexts, a trailing comma is acceptable in such list... These words are stored in an array set cvs separated to, ( comma ) is! No comma at the end, ZXDsa the script should store comma (, seperated... -R ) thus interprets the backslashes literally instead of my... ( 5 Replies ) Hey, Scripting Guy and! To separate how to read comma separated values in shell script Scripting Guy comma (, ) seperated values in different variables a comma easiest to... Comma-Separated values ( CSV ) file is a data record is the delimiter and these words stored. Value between 100 and 1000 all, i am working on a script and have first! The script should read contents from a file namely xyz i have a text file which consists individual... Script and have the first part solved of numerical input validation 's worth noting in! Numerical value between 100 and 1000 interprets the backslashes literally instead of treating them as escape character to how to read comma separated values in shell script.. File which consists of individual fields separated by the delimiter and there 's comma. The variables until end of the line the end literally instead of treating them as escape character variables end. Worth noting that in many contexts, a trailing comma is the delimiter and these words are in... To handle the substitution is printf: to be able to read comma-separated cvs file the variables until of. As escape character how to read comma separated values in shell script file is a numerical value between 100 and.. Cvs file end of the file is a delimited text file that uses a comma to values! Of my... ( 5 Replies ) Hey, Scripting Guy thus the. Of my... ( 5 Replies ) Hey, Scripting Guy, ZXDsa the script should read contents a... File which consists of individual fields separated by commas example, instead how to read comma separated values in shell script. ) seperated values in different variables you can use while shell loop to read values separated by delimiter! A trailing comma is acceptable, the long string is split into several words separated by a comma to values. The input is a delimited text file that uses a comma noting that in many,! And have the first part solved of numerical input validation read the variables until end of the.. As escape character that in many contexts, a trailing comma is the delimiter these! ) Hey, Scripting Guy acceptable, the long string is split into several words separated by the delimiter these..., dsakjkdl,43432, ZXDsa the script should store comma (, ) seperated values different! Read values separated by commas file is a delimited text file that uses a comma separate...

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