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Your first one; the echo is not necessary. Best to quote it though:


awk '$2 ~/^0:/ && match( $6, "^" v ) && $7 ~/^2[48]/ && $8 ~/^00|^0F|^1F/ {print x;print;getline;print}; {x=$0}' v="$name"...

perl -e 'use POSIX qw(strftime);$now_string = strftime "%e-%b-%Y", localtime(time-86400); print $now_string,"\n";'

p stores previous line
w cycles thru 0, 4 and 6
getline;print - fetches next line from infile and prints it.
$1" "$2=="B 0:" field 1 is "B" and field 2 is "0:"

print p;print print previous...

How about this:

awk '$1" "$2=="B 0:"&&$7~"^(10|11)$"&&$8==w {
print p;print; if(w>2) {getline;print};w=w<8?w+2:0; if(w==2)w=4} {p=$0}' infile

As you already mentioned, you need your logic to be applied on sets of data. So, first we need to identify a set. As the Date: lines will always be there, the only way (I could think) of identifying...

In that case, the following should work (not tested fully though):


awk '/^Date:/{times++} /^Date:/ && times==8 {for(i=1;a[i];i++){
split(a[i],f)
if (a[i] ~ /^B 0:/ && f[7]=="10" && f[8]=="00")...

Provided that you quote the variables as you use them, as chihung has done, then multi token strings (with spaces) should be fine.

vehicle1=car
vehicle2=bicycle
nawk -v v1="$vehicle1" -v v2="$vehicle2" 'match($0,v1),match($0,v2)' transportation.txt

You should have nawk on a Solaris 10 box, so either of these should work and avoid any nasty quoting games:



awk 'match( $0, v ),/bicycle/' v="$vehicle" input-file

nawk -v v="$vehicle"...

vechicle="car"
awk '/'$vehicle'/,/bicycle/' transportation.txt


Since you are using '/.../' , second way cannot be used.

awk 'NR>=3 && /red/' infile

Umm, I have Version M-12/28/93e and I get:

$ printf "%T\n" now
ksh93: printf: T: unknown format specifier

So I'm guessing you need a later version for this feature.

Your probably going...

This list provides index to the abbr month name. The 4th column returns from the 'localtime' will give the index of the month. Eg. 2 means Mar. List index starts from 0
...

yes. If the scp command gets succeed then && part scp done will be written to file else failure will be written to the file.

scp sourcefile.txt user@targetsystem:/home/test/dir1 && echo "scp done" || echo "fail" > out.txt

nawk 'NR==2{sub(/.*/, "newtext", $3)}'1 inputfile