| awk |
ls -l
*.cgm | awk '
{ total += $7 }
{mbtotal = total/1048576}
END
{ printf ("Size =%.2f Mbytes\n",
mbtotal) }' |
|
Total file sizes from ls -l and display as MB |
| awk |
ls -l
*.cgm | awk '
{ total += $7 }
END
{ pritf ("Size =%d\n", total) }' |
|
Total file sizes from ls -l |
| awk |
cat filename | awk '
{ print $0, getline }' > filename.odd
cat filename | awk '
{ getline first, print $first }' > filename.even |
|
Separate odd lines and even lines |
| awk |
cat filename | awk '
{sum += $1, ++count }
END
{average = sum / count, print average} ' |
field 1 should be numbers ($1) |
Average a list of number |
| awk |
cat file | awk '
{ for
(i=10;i<=NF;i++) printf $i " "}
END
{print}' |
i= column number to print from |
print columns X to end of line |
| awk |
awk
'substr ($0,n,1) == "c" ' filename |
c= character to search for n= column to seach in |
Find a particular chatacter in a certain column |
| awk |
.... I awk '{ print length ($1)}' |
|
How many characters in a field |
| awk |
awk '{ print $NF }' |
|
Print last field |
| awk |
cat passwd I awk -F":" '
{ q=NF -1 } { print $q }' |
good for getting home directory as password
and GCOS can have delimiters in |
print last but one field |