sed -n 's|.*<port> *\(.*[^ ]\) *</port>.*|\1|p' ../cfg.xm
Narrative: If you find a line with '<PORT>', optional spaces, some not-space-value, optional spaces and '</port>', turn the entire line into the not-space-value and print it. The * is greedy, so the ' * after <port> will stop just before the first not space value, and we must stop the captured \(...\) value before we scoop up any spaces, so it must end in a non-space; the .* before that is ensured to start with a not space by the greedy prior ' *' -- left greedy beats right greedy. Not that I ensure anything on the line before and after is picked up and not laid back down. We could still be fooled by '<port> 1 2 </port>', but we are assuming that the data is 'well behaved' with one port on any line. If it was really well behaved, there would be no spaces in there. Maybe they were before or after it all, not inside. Never give a white space your trust, it could be spaces, backspaces, tabs, carriage returns, form feeds, iso8859-1 nonbreaking spaces (space + 128), and other control characters that leave no glyph. In ascii, there is [!-~] that you can see, and then there is the rest.
Last edited by DGPickett; 03-12-2013 at 04:39 PM..
Reason: I only wanted one space there. Two spaces is for speed in other space chasers.
Hi ,
I have a code like this:
uid=scott
password=tiger
database=db01
cat >runid_val.sql<<-EOA
SET ECHO OFF
SET FEEDBACK OFF
SET HEADING OFF
SELECT trim(runid_seq.nextval) FROM dual;
EXIT
EOA
echo `cat runid_val.sql`
V_RUNID=`sqlplus -s $uid/$password@$database @runid_val.sql`... (5 Replies)
Hi,
I am giving a grep command, and i am getting the output. i want to store it in a variable
for eg
a = grep '12345' /dir/1/2/log.txt ( the output is number)
b= grep 'basic' /dir/1/2/log1.txt (in this case the output is character)
so how to assign the output of grep to a variable
... (1 Reply)
Hi Team,
I need to get data from oracle table & need to assign that value to unix variable. I have serched the same in other threads. I found the following code.
I have tried code to get the value from oracle. but it is not working. The error shows invalid identifier "NAM" & then list all... (5 Replies)
Hi All
I have a file for ex .log file which contain several lines within it.
I have to read that file contents & assing that to a variable. (2 Replies)
Hi ,
I would like to assign command (with pipe) output to a variable. The code is as follows. The goal of the code is to get the last folder folder with a particular name pattern.
myDate=`ls | grep 2009 | tail -1`
echo "myDate=" $myDate
However, in the presence of the pipe, the code... (3 Replies)
Greetings folks,
I am trying to assign the output of a dscl command (contains name<spaces>id) to a variable as an array. Currently I am piping the output into a tmp file, then reading the tmp file into an array, then parsing the array. I would like to bypass creating the tmp file portion of... (6 Replies)
Code
set -x
STATUS="0"
echo $STATUS
for i in `ls -ltr Report*|awk '{ print $9 }'`
do
if
then
flg = "`head -1 "$i" |cut -c 31-33`"
echo `head -1 "$i" |cut -c 31-33`
echo $flg
if
then
echo "having Fun"
STATUS="2"
else
echo "no Fun"
fi
fi (2 Replies)
Hi Folks,
I am trying to assign a value from the command to a dynamic variable. But I am not getting the desired output.. I am sure something is wrong so i need experts advise.
There will be multiple files like /var/tmp/server_1, /var/tmp/server_2, /var/tmp/server_3, having different server... (6 Replies)
Hi
iam new to shell scripting
how to declare variables as redshift query and I have to compare two counts by using if condition .
ex:count=select count(*) from prd;
select count(*) from prd;
select count(*) from tag;
can any one help me .
Please use CODE tags when displaying... (1 Reply)
Discussion started by: sam526
1 Replies
LEARN ABOUT NETBSD
col
COL(1) BSD General Commands Manual COL(1)NAME
col -- filter reverse line feeds from input
SYNOPSIS
col [-bfpx] [-l num]
DESCRIPTION
col filters out reverse (and half reverse) line feeds so that the output is in the correct order with only forward and half forward line
feeds, and replaces white-space characters with tabs where possible. This can be useful in processing the output of nroff(1) and tbl(1).
col reads from the standard input and writes to the standard output.
The options are as follows:
-b Do not output any backspaces, printing only the last character written to each column position.
-f Forward half line feeds are permitted (``fine'' mode). Normally characters printed on a half line boundary are printed on the fol-
lowing line.
-p Force unknown control sequences to be passed through unchanged. Normally, col will filter out any control sequences from the input
other than those recognized and interpreted by itself, which are listed below.
-x Output multiple spaces instead of tabs.
-l num Buffer at least num lines in memory. By default, 128 lines are buffered.
The control sequences for carriage motion that col understands and their decimal values are listed in the following table:
ESC-7 reverse line feed (escape then 7)
ESC-8 half reverse line feed (escape then 8)
ESC-9 half forward line feed (escape then 9)
backspace moves back one column (8); ignored in the first column
carriage return (13)
newline forward line feed (10); also does carriage return
shift in shift to normal character set (15)
shift out shift to alternative character set (14)
space moves forward one column (32)
tab moves forward to next tab stop (9)
vertical tab reverse line feed (11)
All unrecognized control characters and escape sequences are discarded.
col keeps track of the character set as characters are read and makes sure the character set is correct when they are output.
If the input attempts to back up to the last flushed line, col will display a warning message.
SEE ALSO expand(1), nroff(1), tbl(1)STANDARDS
The col utility conforms to X/Open Portability Guide Issue 4, Version 2 (``XPG4.2''). The -l option is an extension to the standard.
HISTORY
A col command appeared in Version 6 AT&T UNIX.
BSD February 22, 1999 BSD