Here a gawk script which you could run like this: gawk -f ldif.awk yourfile.ldif
Please note: the multicharacter value of `RS' is a gawk extension.
$ cat ldif.awk
BEGIN {
RS = "\n\n" # Record separator: empty line
FS = "\n" # Field separator: newline
}
# For each record: loop twice through fields
{
# Loop #1 identifies the sAMAccountName
for (i = 1; i <= NF; i++) {
if ($i ~ /^sAMAccountName: /) {
sAN = substr($i, 17)
break
}
}
# Loop #2 prints output lines
for (i = 1; i <= NF; i++) {
if (tolower($i) ~ /smtp:.*@contoso.com$/) {
split($i, n, ":|@")
print n[3] ": " sAN "@other.domain"
}
}
}