diff options
| author | Guy Harris <guy@alum.mit.edu> | 2001-02-23 07:17:07 +0000 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2001-02-23 07:17:07 +0000 |
| commit | 3b5ef0b696d773fccafd98522b45c192de2cb858 (patch) | |
| tree | fc2d9453268e04bef2b274f50a443abc1482e2fd /doc | |
| parent | c1764ee28db52ab666e6fbd0db15fa92113f7c3d (diff) | |
| download | wireshark-3b5ef0b696d773fccafd98522b45c192de2cb858.tar.gz wireshark-3b5ef0b696d773fccafd98522b45c192de2cb858.tar.bz2 wireshark-3b5ef0b696d773fccafd98522b45c192de2cb858.zip | |
Update the documentation to correctly reflect the way tests on Boolean
fields work in display filters.
svn path=/trunk/; revision=3069
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/ethereal.pod.template | 18 | ||||
| -rw-r--r-- | doc/tethereal.pod.template | 18 |
2 files changed, 16 insertions, 20 deletions
diff --git a/doc/ethereal.pod.template b/doc/ethereal.pod.template index 7b63215146..e31b8db7a7 100644 --- a/doc/ethereal.pod.template +++ b/doc/ethereal.pod.template @@ -773,19 +773,17 @@ The following three display filters are equivalent: frame.pkt_len > 012 frame.pkt_len > 0xa -Boolean values are either true or false. However, a boolean field is -present in a protocol decode only if its value is true. If the value is -false, the field is not presence. You can therefore check the truth -value of a boolean field by simply checking for its existence, that is, -by naming the field. For example, a token-ring packet's source route -field is boolean. To find any source-routed packets, the display filter -is simply: +Boolean values are either true or false. In a display filter expression +testing the value of a Boolean field, "true" is expressed as 1 or any +other non-zero value, and "false" is expressed as zero. For example, a +token-ring packet's source route field is boolean. To find any +source-routed packets, a display filter would be: - tr.sr + tr.sr == 1 -Non source-routed packets can be found with the negation of that filter: +Non source-routed packets can be found with: - ! tr.sr + tr.sr == 0 Ethernet addresses, as well as a string of bytes, are represented in hex digits. The hex digits may be separated by colons, periods, or hyphens: diff --git a/doc/tethereal.pod.template b/doc/tethereal.pod.template index 298afa81eb..6deb5f3eda 100644 --- a/doc/tethereal.pod.template +++ b/doc/tethereal.pod.template @@ -267,19 +267,17 @@ The following three read filters are equivalent: frame.pkt_len > 012 frame.pkt_len > 0xa -Boolean values are either true or false. However, a boolean field is -present in a protocol decode only if its value is true. If the value is -false, the field is not presence. You can therefore check the truth -value of a boolean field by simply checking for its existence, that is, -by naming the field. For example, a token-ring packet's source route -field is boolean. To find any source-routed packets, the read filter -is simply: +Boolean values are either true or false. In a read filter expression +testing the value of a Boolean field, "true" is expressed as 1 or any +other non-zero value, and "false" is expressed as zero. For example, a +token-ring packet's source route field is boolean. To find any +source-routed packets, a read filter would be: - tr.sr + tr.sr == 1 -Non source-routed packets can be found with the negation of that filter: +Non source-routed packets can be found with: - ! tr.sr + tr.sr == 0 Ethernet addresses, as well as a string of bytes, are represented in hex digits. The hex digits may be separated by colons, periods, or hyphens: |