cheat-fork-echo/cheat/cheatsheets/awk

# sum integers from a file or stdin, one integer per line:
printf '1\n2\n3\n' | awk '{ sum += $1} END {print sum}'

# using specific character as separator to sum integers from a file or stdin
printf '1:2:3' | awk -F ":" '{print $1+$2+$3}'

# print a multiplication table
seq 9 | sed 'H;g' | awk -v RS='' '{for(i=1;i<=NF;i++)printf("%dx%d=%d%s", i, NR, i*NR, i==NR?"\n":"\t")}'
cheat awk: sum integers from a file or stdin 2013-08-27 13:06:15 +02:00			`# sum integers from a file or stdin, one integer per line:`
			`printf '1\n2\n3\n' \| awk '{ sum += $1} END {print sum}'`
add command [more] and some more example for command [awk] 2015-05-06 09:14:49 +02:00
			`# using specific character as separator to sum integers from a file or stdin`
			`printf '1:2:3' \| awk -F ":" '{print $1+$2+$3}'`

			`# print a multiplication table`
			`seq 9 \| sed 'H;g' \| awk -v RS='' '{for(i=1;i<=NF;i++)printf("%dx%d=%d%s", i, NR, i*NR, i==NR?"\n":"\t")}'`