Oi,

Eu tenho um arquivo como o seguinte:

Starting to process segment 0 (and symmetry related segments)
	Number of (cancelled) singularities: 0
	Number of (cancelled) negative numerators: 0
	Segment 0: 5.49secs
Starting to process segment 1 (and symmetry related segments)
	Number of (cancelled) singularities: 0
	Number of (cancelled) negative numerators: 0
	Segment 1: 10.01secs
Starting to process segment 2 (and symmetry related segments)
	Number of (cancelled) singularities: 0
	Number of (cancelled) negative numerators: 0
	Segment 2: 7.82secs
Starting to process segment 3 (and symmetry related segments)
	Number of (cancelled) singularities: 0
	Number of (cancelled) negative numerators: 0
	Segment 3: 5.31secs

 
TIME="`awk '/Segment/ {print $3%secs + $TIME} ' log.txt`"

echo $TIME

isso funciona para a minha:

awk-F ":" '/ Segmento / (print $ 2)' file.txt
5.49secs
10.01secs
7.82secs
5.31secs

pura casca:

Segmento ficheiro.txt grep | cut-d:-f2

Tente este:

awk '
/Segment/{match($3,".");t+=substr($3,RSTART)}
END{print "Totaltime :"t}
' file

Mesmo:

awk '/Segment/{t+=$3}END{print "Totaltime :"t}' file

Para adicionar os valores, é suficiente se você receber a soma no final? Então awk é tudo que você precisa:

awk '/Segment/ { gsub("secs",""); time += $3 } END { print time }' file.txt

awk '/Segment/ { gsub ("secs",""); time += $3; print $3, time } file.txt |
while read THISTIME SUMTIME; do
  echo This time, we got $THISTIME
  echo Sum so far is $SUMTIME
done

Quero agradecer a todos pela resposta rápida que você! Todas as soluções são ótimos! Eu realmente aprecio o seu esforço!

@ Época: Estou realmente impressionado com o seu "sofisticados" solução!

Obrigado novamente!

sed '/Segment/ s/secs//' a > b
awk 'BEGIN{FS=":"}
$0 ~ /Segment/ {
if(t=="")
{
	t=$2
	print
}
else
{
	t=t+$2
	print $1" "t
}
}
$0 !~ /Segment/ {print}
' b
rm b