A script file

We start by creating a file:

$ touch phones.awk

Open the file in your editor.

#Start

We start by moving in the previous command. Here we can skip the first line as follows:

#!/usr/bin/env awk

BEGIN {
    FS=","
    OFS="="
}
NR==1 { next }
{
    print $2,$1
}

We tell the script that if NR is 1 then move on to the next row with the keyword next. The result is the same as before and we execute the script with the flag -f <filename>:

$ awk -f phones.awk phones.txt
iPhone X=Apple
iPhone 11=Apple
Galaxy S20=Samsung
Galaxy S21+=Samsung
Galaxy Note20=Samsung

The printout is not that exciting so we give it some more work:

#!/usr/bin/env awk

BEGIN {
    FS=","
    print "\n---- Start of report ----\n"
}
NR==1 { next }
{
    print NR-1 ": " $1,$2,$3
}
END {
    print "\n---- End of report ----\n"
}

Run the command again:

$ awk -f phones.awk phones.txt

---- Start of report ----

1: Apple iPhone X 8000
2: Apple iPhone 11 10000
3: Samsung Galaxy S20 9500
4: Samsung Galaxy S21+ 11500
5: Samsung Galaxy Note20 8000

---- End of report ----

We see that we worked both with BEGIN and with END. We also use the built-in variable NR. Note that we could also use arithmetic directly on the variable.

#Revision history