06-04-2009
passing variables to sed in ksh
Hi, i need help passing variables to sed using ksh.
My goal is to get particular data from log files.
first i put a mark to the log files.
echo "TEST_"`date + %m_%d_%Y_%T"` >markFile
this will produce a 'markFile' which contain text like this
TEST_06_01_2009_21:55:09
then i put the mark in the beginning and the end of a test on file.log
cat markFile>>file.log
...
...Let the test run
...
cat markFile>>file.log
as a result the log file will look like this
some text 1...
some text 2...
TEST_06_01_2009_21:55:09
some text 3...
some text 4...
some text 5...
TEST_06_01_2009_21:55:09
some text 6...
some text 7...
some text 8...
now i need to take the lines between those marks
TEST_06_01_2009_21:55:09
some text 3...
some text 4...
some text 5...
TEST_06_01_2009_21:55:09
as i said i am using ksh
create a variable
mark=`cat markFile`
sed -n '/$mark/,/$mark/p' acu.log
the issue is in the sed... sed doesn't want to take the value of $mark. i think sed sees $mark as a command.
what should i do?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi folks,
I'm looking for a solution to pass variables to a sed-command. I'm reading a lot of threats and also the q&a "How can I use a variable in sed?". None of these commands works. I'm using AIX 5.2.
I want to do the following:
NUMBER=` echo 38341` | sed -n '/$NUMBER/p'
an obtained... (3 Replies)
Discussion started by: jfisch
3 Replies
2. Shell Programming and Scripting
I'm trying to write a ksh script that uses awk, but I want to pass variables to awk. For example (not working):
if ];then
searchstr=$1
lsof -i | awk '{if($9~/SEARCHSTR/) print $2} SEARCHSTR=$searchstr'
else
echo "usage: $0 <search string>"
fi
I tried several options. Is it... (3 Replies)
Discussion started by: rein
3 Replies
3. Shell Programming and Scripting
I am trying to pass a regular expression variable from a simple script to sed
to remove entries from a text file
e.g.
a='aaaa bbbb cccc ...|...:'
then executing sed from the script
sed s'/"'$a"'//g <$FILE > $FILE"_"1
my output file is always the same as the input file !!
any... (5 Replies)
Discussion started by: Daniel234
5 Replies
4. Shell Programming and Scripting
Hello ,
I have a script named testscript.sh
wherein I have two variables $var and $final (both of which contain a number)
I have a sed write function inside this script as follows:
sed '1,2 w somefile.txt' fromfile.txt
Now , in the above i want to pass $var and $final instead of... (2 Replies)
Discussion started by: shweta_d
2 Replies
5. Shell Programming and Scripting
Hi Folks,
How can I make the following to work from a korn shell?
old="OLDSTRING"
new="NEWSTRING"
file="myfile.txt"
sed -n 's/$old/$new/gp' $file
Thanks in advance
rogers42 (3 Replies)
Discussion started by: rogers42
3 Replies
6. Shell Programming and Scripting
I need sed to add a "/>" to the end of a line that contains/starts with <meta.
current line is <meta name="keywords" content="kayword 1, kwyword2">
and should be <meta name="keywords" content="kayword 1, kwyword2 " />
i need something like this?
find . -name "*.html" -print0 | xargs... (6 Replies)
Discussion started by: sky_rivers
6 Replies
7. Shell Programming and Scripting
Hello I am hoping you can help.
I use ksh in Solaris9
I am trying to pass user imputed variables into SED but for some reason can only get SED to recognize one variable.
I have experimented with te below command with putting ' ' and " " in different places but I cant seem to get it to... (8 Replies)
Discussion started by: lostincashe
8 Replies
8. Shell Programming and Scripting
Using ksh to call a function which has awk script embedded.
It parses a long two element list file, filled with text numbers (I want column 2, beginning no sooner than line 45, that's the only known thing) . It's unknown where to start or end the data collection, dynamic variables will be used. ... (1 Reply)
Discussion started by: highnthemnts
1 Replies
9. Shell Programming and Scripting
Hi everyone,
I've re-written some of our scripts to use more functions and I've run into a situation where passing a variable to a sed function does not work. My function is a one-liner sed command as follows:
function StringSub()
{
sed -i "${1}/${2}/${3}/${4}" ${5}
}
Where ${1} through... (4 Replies)
Discussion started by: richardsantink
4 Replies
10. Shell Programming and Scripting
I'm reading a text file using a while loop but when I call a function from within this loop it exits that same iteration … even though there are many more lines in the file to be read.
I thought it was something to do with the IFS setting but it appears that a function call (when run... (3 Replies)
Discussion started by: user052009
3 Replies
LEARN ABOUT OPENDARWIN
suspend
suspend(1) User Commands suspend(1)
NAME
suspend - shell built-in function to halt the current shell
SYNOPSIS
sh
suspend
csh
suspend
ksh
suspend
DESCRIPTION
sh
Stops the execution of the current shell (but not if it is the login shell).
csh
Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.
ksh
Stops the execution of the current shell (but not if it is the login shell).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)
SunOS 5.10 15 Apr 1994 suspend(1)