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I am trying to reformat a large file. The first 6 columns of each line are OK but the rest of the columns in the line need to be combined in increments of 2 with a "/" character in between.
Example file (showing only a few columns but have many more in actual file):
1 1 0 0 1 2 A T A C
Into:
1 1 0 0 1 2 A/T A/C
So far I have been trying awk and this is where I am at...
awk '{print $1,$2,$3,$4,$5; for(i=7; i < NF; i=i+2) print $i+"/"+$i+1}' myfile.txt > mynewfile.txt
338
paste is the command that can be used for column-wise concatenation. The paste command can be used with the following syntax: $ paste file1 file2 file3 …
We can also print multiple columns and insert our custom string in between columns. For example, to print the permission and filename of each file in the current directory, use the following set of commands: $ ls -l | awk '{ print $1 " : " $8 }' -rw-r--r-- : delimited_data.
To place the space between the arguments, just add " " , e.g. awk {'print $5" "$1'} .
awk '{for(i=j=7; i < NF; i+=2) {$j = $i"/"$(i+1); j++} NF=j-1}1' input
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