Awk adding constant values

问题

I have data in the text file like val1,val2 with multiple lines and I want to change it to 1,val1,val2,0,0,1

I tried with print statement in awk(solaris) to add constants by it didn't work.

What is the correct way to do it ?

---

(From the comments) This is what I tried

awk -F, '{print "%s","1,"$1","$2"0,0,1"}' test.txt 

回答1:

Based on the command you posted, a little change makes it:

$ awk -F, 'BEGIN{OFS=FS} {print 1,$1,$2,0,0,1}' file
1,val1,val2,0,0,1

OR using printf (I prefer print):

$ awk -F, '{printf "1,%s,%s,0,0,1", $1, $2}' file
1,val1,val2,0,0,1

回答2:

To prepend every line with the constant 1 and append with 0,0,1 simply do:

$ awk '{print 1,$0,0,0,1}' OFS=, file
1,val1,val2,0,0,1

A idiomatic way would be:

$ awk '$0="1,"$0",0,0,1"' file
1,val1,val2,0,0,1

回答3:

Using sed:

sed 's/.*/1,&,0,0,1/' inputfile

Example:

$ echo val1,val2 | sed 's/.*/1,&,0,0,1/'
1,val1,val2,0,0,1

来源：https://stackoverflow.com/questions/19097255/awk-adding-constant-values