Rats, forgot to attach the man pages.
On Wed, 25 Dec 2002, Tim Rice wrote:
> On Wed, 25 Dec 2002, Richard Levitte - VMS Whacker wrote:
>
> > In message <[EMAIL PROTECTED]> on
>Tue, 24 Dec 2002 16:21:32 -0800 (PST), Tim Rice <[EMAIL PROTECTED]> said:
> >
> > tim> > sed -e 's/ \?\([\.,@]\) */\1/g' -e 's/ *:/:/g' -e 's/#.*//'
> > tim>
> > tim> It doesn't work with the sed on UnixWare or sed on SCO OpenServer.
> > tim> The 's/#.*//' rule works.
> > tim> It seems to do the right thing with GNU sed.
> >
> > Do you have the possibility to either figure out a sed expression that
> > works with the SCO and UnixWare seds, or send me the man pages for sed
> > on each of those systems?
>
> I'll try and work on it between getting a server ready to install on monday.
> I've attached a couple of sed man pages. (in case you figure it out first)
>
> >
> > As far as I understand, we need the filtering I picture above. Do you
> > understand what it does?
>
> I'll need some words explaining what the first section should do.
>
>
>
--
Tim Rice Multitalents (707) 887-1469
[EMAIL PROTECTED]
sed(C) 06 January 1993 sed(C)
Name
sed - invoke the stream editor
Syntax
sed [ -n ] [ -e script ] [ -f sfile ] [ files ]
Description
The sed command copies the named files (standard input default) to the
standard output, edited according to a script of commands. The -e option
causes the script to be read literally from the next argument, which is
usually quoted to protect it from the shell. The -f option causes the
script to be taken from file sfile; these options accumulate. If there is
just one -e option and no -f options, the flag -e may be omitted. The -n
option suppresses the default output. A script consists of editing com-
mands, one per line, of the following form:
[ address [ , address ] ] function [ arguments ]
In normal operation, sed cyclically copies a line of input into a pattern
space (unless there is something left after a D command), applies in
sequence all commands whose addresses select that pattern space, and at
the end of the script copies the pattern space to the standard output
(except under -n) and deletes the pattern space.
A semicolon (;) can be used as a command delimiter.
Some of the commands use a hold space to save all or part of the pattern
space for subsequent retrieval.
An address is either a decimal number that counts input lines cumula-
tively across files, a ``$'' that addresses the last line of input, or a
context address, that is, a /regular expression/ in the style of ed(C)
modified as follows:
+ In a context address, the construction \?regular expression?, where
``?'' is any character, is identical to /regular expression/. Note
that in the context address \xabc\xdefx, the second x stands for
itself, so that the standard expression is abcxdef.
+ The escape sequence \n matches a newline embedded in the pattern
space.
+ A dot (.) matches any character except the terminal newline of the
pattern space.
+ A command line with no addresses selects every pattern space.
+ A command line with one address selects each pattern space that
matches the address.
+ A command line with two addresses separated by a comma selects the
inclusive range from the first pattern space that matches the first
address through the next pattern space that matches the second. (If
the second address is a number less than or equal to the line number
first selected, only one line is selected.) Thereafter, the process is
repeated, looking again for the first address.
Editing commands can be applied only to nonselected pattern spaces by use
of the negation function ``!'' (below).
In the following list of functions, the maximum number of permissible
addresses for each function is indicated in parentheses.
The text argument consists of one or more lines, all but the last of
which end with backslashes to hide the newlines. Backslashes in text are
treated like backslashes in the replacement string of an s command, and
may be used to protect initial blanks and tabs against the stripping that
is done on every script line. The rfile or wfile argument must terminate
the command line and must be preceded by one blank. Each wfile is created
before processing begins. There can be at most 10 distinct wfile argu-
ments.
(1) a\ text
Appends text, placing it on the output before reading the next
input line.
(2) b label
Branches to the : command bearing the label. If label is
empty, branches to the end of the script.
(2) c\ text
Changes text by deleting the pattern space and then appending
text. With 0 or 1 address or at the end of a 2-address range,
places text on the output and starts the next cycle.
(2) d Deletes the pattern space and starts the next cycle.
(2) D Deletes the initial segment of the pattern space through the
first newline and starts the next cycle.
(2) g Replaces the contents of the pattern space with the contents of
the hold space.
(2) G Appends the contents of the hold space to the pattern space.
(2) h Replaces the contents of the hold space with the contents of
the pattern space.
(2) H Appends the contents of the pattern space to the hold space.
(1) i\ text
Insert. Places text on the standard output.
(2) l Lists the pattern space on the standard output with nonprinting
characters spelled in two-digit ASCII and long lines folded.
(2) n Copies the pattern space to the standard output. Replaces the
pattern space with the next line of input.
(2) N Appends the next line of input to the pattern space with an
embedded newline. (The current line number changes.)
(2) p Prints (copies) the pattern space on the standard output.
(2) P Prints (copies) the initial segment of the pattern space
through the first newline to the standard output.
(1) q Quits sed by branching to the end of the script. No new cycle
is started.
(2) r rfile
Reads the contents of rfile and places them on the output
before reading the next input line.
(2) s /regular expression/replacement/flags
Substitutes the replacement string for instances of the regular
expression in the pattern space. Any character may be used
instead of ``/''. For a more detailed description, see ed(C).
Flags is zero or more of:
n n=1-512. Substitute for just the nth occurrence of the
regular expression.
g Globally substitutes for all non-overlapping instances of
the regular expression rather than just the first one.
p Prints the pattern space if a replacement was made.
w wfile
Writes the pattern space to wfile if a replacement was
made.
(2) t label
Branches to the colon (:) command bearing label if any substi-
tutions have been made since the most recent reading of an
input line or execution of a t command. If label is empty, t
branches to the end of the script.
(2) w wfile
Writes the pattern space to wfile.
(2) x Exchanges the contents of the pattern and hold spaces.
(2) y /string1/string2/
Replaces all occurrences of characters in string1 with the cor-
responding characters in string2. The lengths of string1 and
string2 must be equal.
(2) ! function
Applies the function (or group, if function is ``{'') only to
lines NOT selected by the address(es).
(0) : label
This command does nothing; it bears a label for b and t com-
mands to branch to.
(1) = Places the current line number on the standard output as a
line.
(2) { Executes the following commands through a matching ``}'' only
when the pattern space is selected.
(0) An empty command is ignored.
Examples
The following examples assume the use of sh or ksh.
The most common use of sed is to edit a file from within a shell script.
In this example, every occurrence of the string ``sysman'' in the file
infile is replaced by ``System Manager''. A temporary file TMP is used to
hold the intermediate result of the edit:
TMP=/usr/tmp/tmpfile_$$
sed -e 's/sysman/System Manager/g' < infile > $TMP
mv $TMP infile
sed can be used to strip all lines from a file which do not contain a
certain string. In this example, all lines in the file infile which start
with a hash ``#'' are echoed to the screen:
sed -e '/^#/!d' < infile
If several editing commands must be carried out on a file, but the param-
eters for the edit are to be supplied by the user, then a document can be
used to build a temporary edit script for sed to use. The following exam-
ple removes all occurrences of the strings given as arguments to the
script from the file infile. The name of the temporary script is held by
the variable SCRIPT:
SCRIPT=/usr/tmp/script_$$
for name in $*
do
cat >> $SCRIPT <<!
s/${name}//g
!
done
TMPFILE=/usr/tmp/tmpfile_$$
sed -f $SCRIPT < infile > $TMPFILE
mv $TMPFILE infile
rm $SCRIPT
Another use of sed is to process the output from other commands. Here the
ps command is filtered using sed to report the status of all processes
other than those owned by the super user:
ps -ef | sed -e '/^[<Space><Tab>]*root/d'
See also
awk(C), ed(C) and grep(C).
Notes
This command is explained in detail in the User's Guide.
Standards conformance
sed is conformant with:
AT&T SVID Issue 2;
and X/Open Portability Guide, Issue 3, 1989.
See also regexp(S)
sed(1) sed(1)
NAME
sed - stream editor
SYNOPSIS
sed [-n] [-e script] [-f sfile] [file . . .]
DESCRIPTION
sed copies the named file (standard input default) to the
standard output, edited according to a script of commands.
The -f option causes the script to be taken from file sfile;
these options accumulate. If there is just one -e option and
no -f options, the flag -e may be omitted. The -n option
suppresses the default output.
sed processes supplementary code set characters, and
recognizes supplementary code set characters in script file
comments (see below) according to the locale specified in the
LC_CTYPE environment variable [see LANG on environ(5)], except
as noted under the y command below. In regular expressions,
pattern searches are performed on characters, not bytes, as
described on ed(1).
A script consists of editing commands, one per line, of the
following form:
[address [, address]] function [arguments]
In normal operation, sed cyclically copies a line of input
into a pattern space (unless there is something left after a D
command), applies in sequence all commands whose addresses
select that pattern space, and at the end of the script copies
the pattern space to the standard output (except under -n) and
deletes the pattern space.
Some of the commands use a hold space to save all or part of
the pattern space for subsequent retrieval.
An address is either a decimal number that counts input lines
cumulatively across files, a $ that addresses the last line of
input, or a context address, that is, a /regular expression/
in the style of ed(1) modified thus:
In a context address, the construction \?regular
expression?, where ? is any character, is identical to
/regular expression/. Note that in the context address
\xabc\xdefx, the second x stands for itself, so that the
Copyright 1996 Novell, Inc. Page 1
sed(1) sed(1)
regular expression is abcxdef.
The escape sequence \n matches a new-line embedded in
the pattern space.
A period (.) matches any character except the terminal
new-line of the pattern space.
A command line with no addresses selects every pattern
space.
A command line with one address selects each pattern
space that matches the address.
A command line with two addresses selects the inclusive
range from the first pattern space that matches the
first address through the next pattern space that
matches the second address. (If the second address is a
number less than or equal to the line number selected by
the first address, only the line corresponding to the
first address is selected.) Thereafter the process is
repeated, looking again for the first address.
Editing commands can be applied only to non-selected pattern
spaces by use of the negation function ! (below).
In the following list of functions the maximum number of
permissible addresses for each function is indicated in
parentheses.
The text argument consists of one or more lines, all but the
last of which end with \ to hide the new-line. Backslashes in
text are treated like backslashes in the replacement string of
an s command. The rfile or wfile argument must terminate the
command line and must be preceded by exactly one blank. Each
wfile is created before processing begins. There can be at
most 10 distinct wfile arguments.
(1)a\
text Append. Place text on the output before reading the
next input line.
(2)b label
Branch to the : command bearing the label. If label
is empty, branch to the end of the script.
Copyright 1996 Novell, Inc. Page 2
sed(1) sed(1)
(2)c\
text Change. Delete the pattern space. Place text on
the output. Start the next cycle.
(2)d Delete the pattern space. Start the next cycle.
(2)D Delete the initial segment of the pattern space
through the first new-line. Start the next cycle.
(0)E Delete the contents of the hold space.
(2)g Replace the contents of the pattern space by the
contents of the hold space.
(2)G Append the contents of the hold space to the pattern
space.
(2)h Replace the contents of the hold space by the
contents of the pattern space.
(2)H Append the contents of the pattern space to the hold
space.
(1)i\
text Insert. Place text on the standard output.
(2)l List the pattern space on the standard output in an
unambiguous form. Non-printable characters are
displayed in octal notation and long lines are
folded.
(2)n Copy the pattern space to the standard output.
Replace the pattern space with the next line of
input.
(2)N Append the next line of input to the pattern space
with an embedded new-line. (The current line number
changes.)
(2)p Print. Copy the pattern space to the standard
output.
(2)P Copy the initial segment of the pattern space
through the first new-line to the standard output.
Copyright 1996 Novell, Inc. Page 3
sed(1) sed(1)
(1)q Quit. Branch to the end of the script. Do not
start a new cycle.
(2)r rfile
Read the contents of rfile. Place them on the
output before reading the next input line.
(2)s/regular expression/replacement/flags
Substitute the replacement string for instances of
the regular expression in the pattern space. Any
character may be used instead of /. For a fuller
description see ed(1). flags is zero or more of:
n n= 1 - 512. Substitute for just the nth
occurrence of the regular expression.
g Global. Substitute for all nonoverlapping
instances of the regular expression rather
than just the first one.
p Print the pattern space if a replacement was
made.
w wfile Write. Append the pattern space to wfile if
a replacement was made.
(2)t label
Test. Branch to the : command bearing the label if
any substitutions have been made since the most
recent reading of an input line or execution of a t.
If label is empty, branch to the end of the script.
(2)w wfile
Write. Append the pattern space to wfile. The
first occurrence of w will cause wfile to be
cleared. Subsequent invocations of w will append.
Each time the sed command is used, wfile is
overwritten.
(2)x Exchange the contents of the pattern and hold
spaces.
(2)y/string1/string2/
Transform. Replace all occurrences of characters in
string1 with the corresponding characters in
string2. string1 and string2 must have the same
Copyright 1996 Novell, Inc. Page 4
sed(1) sed(1)
number of characters. The result is not guaranteed
when supplementary code set characters are specified
in the strings.
(2)! function
Don't. Apply the function (or group, if function is
{) only to lines not selected by the address(es).
(0): label
This command does nothing; it bears a label for b
and t commands to branch to.
(1)= Place the current line number on the standard output
as a line.
(2){ Execute the following commands through a matching }
only when the pattern space is selected.
(0) An empty command is ignored.
(0)# If a # appears as the first character on a line of a
script file, then that entire line is treated as a
comment, with one exception: if a # appears on the
first line and the character after the # is an n,
then the default output will be suppressed. The
rest of the line after #n is also ignored. A script
file must contain at least one non-comment line.
Comments may contain supplementary code set
characters.
FILES
/usr/lib/locale/locale/LC_MESSAGES/uxcore.abi
language-specific message file [See LANG on environ(5).]
REFERENCES
awk(1), ed(1), grep(1)
Copyright 1996 Novell, Inc. Page 5
