Tab separated values in awk
You need to set the OFS variable (output field separator) to be a tab: echo “$line” | awk -v var=”$mycol_new” -F’\t’ ‘BEGIN {OFS = FS} {$3 = var; print}’ (make sure you quote the $line variable in the echo statement)
You need to set the OFS variable (output field separator) to be a tab: echo “$line” | awk -v var=”$mycol_new” -F’\t’ ‘BEGIN {OFS = FS} {$3 = var; print}’ (make sure you quote the $line variable in the echo statement)
awk ‘{print $(NF-1)}’ Should work
If you don’t provide a seed to srand, it will either use the current date and time or a fixed starting seed (this may vary with the implementation). That means, for the former, if your processes run fast enough, they’ll all use the same seed and generate the same sequence. And, for the latter, it … Read more
Note: Coprocess is GNU awk specific. Anyway another alternative is using getline cmd = “strip “$1 while ( ( cmd | getline result ) > 0 ) { print result } close(cmd) Calling close(cmd) will prevent awk to throw this error after a number of calls : fatal: cannot open pipe `…’ (Too many open files)
This maybe what you’re looking for: awk ‘BEGIN {FS=” “;} {printf “‘\”%s’\” “, $1}’ That is, with ‘\” you close the opening ‘, then print a literal ‘ by escaping it and finally open the ‘ again.
Have you tried: echo “12|23|11″ | awk ‘{split($0,a,”|”); print a[3],a[2],a[1]}’
In awk, Since 1 always evaluates to true, it performs default operation {print $0}, hence prints the current line stored in $0 So, awk ‘$2==”no”{$3=”N/A”}1’ file is equivalent to and shorthand of awk ‘$2==”no”{$3=”N/A”} {print $0}’ file Again $0 is default argument to print, so you could also write awk ‘$2==”no”{$3=”N/A”} {print}’ file In-fact you … Read more
awk ‘{SUM+=$3}END{print SUM}’ where $3 represent value of column 3
awk ‘FNR==NR{a[$1]=$2 FS $3;next} here we handle the 1st input (file2). say, FS is space, we build an array(a) up, index is column1, value is column2 ” ” column3 the FNR==NR and next means, this part of codes work only for file2. you could man gawk check what are NR and FNR { print $0, … Read more
awk ‘{for(i=1;i<4;i++) $i=””;print}’ file