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Not sure. As F[ ] elements are created when referenced, memory may become exhausted, but then the error msg should complain about memory allocation problems. Try this:awk 'NR == FNR ...

try:
awk 'a[$1]++ ? 0 : 1' infile

Yes, it reads it.

If you really wanted you could embed it into awk itself like

T[1,"T"]=1;
T[1,"C"]=2;
... in the BELOW section instead, but when there's more than three lines of it, I tend...

Have a go with this:


awk '
{
n = split( $0, a, "" );
for( i = 1; i <= n; i++ )
{
count[a[i]]++;
pos[a[i]] = sprintf( "%s%d ", pos[a[i]],...

Try: sort -nk5 file

$nawk '{for(i=1;i<=NF;i++){if(i==1){printf("%s\t",$i);}else if(i==2){printf("%s ",$i);} else {printf(" %s",$i);} if(i==NF)printf("\n"); }}' inputfile
cgd1_10
cgd1_100
cgd1_1000 ...

Try this, which works as described earlier:
awk 'function pm(){
for(j=1;j<=NF;j++)
for(i=1;i<=m;i++)
printf "%s"(i<m?OFS:RS),M[j,i]
}
/[[:alpha:]]/{
...

try:

awk '
{if(/[a-z]/){x++}
{for(i=1;i<=NF;i++) a[x,NR,i]=$i;t=NR;s=NF
}}
END {for(l=1;l<=x;l++)
{for(m=1;m<=s;m++)
{for(n=1;n<=t;n++) {printf (length(a[l,n,m])>0?a[l,n,m]" ":"")}
{print...

sed 's/^1$//' inputFile

OR

awk '{if(0+$0 ==1) $0="";}1' inputFile

Inline editing of the file using Perl -


$
$
$ cat f0
1102
1
1
1
1
1234
1
1
1
1
1009
1
1
1

$ awk '!L[$1]++' file1
a dfg 3 6 8 9
b ghj 9 0 4 2
c jkl 2 4 5 7
d kml 9 2 5 7
e lsd 3 6 8 9


You could also do it with sort:

sort -uk1,1 file1

awk 'BEGIN{print 1;for(i=200;i<10001;i+=200)print i}' |
while read a
do
echo $a
done

i=0
while [ $i -lt 100000 ]
do
let i+=200 # increase value
echo $i # do something here
done

For example if the values are two per line in the input file, you could try something like this:
i=0
while read begin end
do
perl ex.pl -b "$begin" -e "$end" -c plot plot.txt $((++i))_plot.txt...

for f in *.fasta; do
printf '/^>/;/^>/-d\nw\nq\n' | ed -s "$f"
done

awk 'FNR==1{a=0}/>/{a++;if(a==6){split(FILENAME,n,"\\.");sub("^>","");print n[1]" "$0}}' * > output.txt

Try:
awk 'NR==FNR&&/^>/{A[$1]=$0;next}/^>/{if(A[$1]){$0=A[$1];p=1}else p=0}p' file2 file1

How about:
awk 'NR==FNR{$1=">"$1;A[$1]=$0;next}A[$1]{$0=A[$1]}1' file2 file1