the shell is bash shell and the system is windows.
i need to delete entire print lines... Like my file is having some printf statements. I need to remove all the printf lines in my file. These printf statements might be in a single line or it might stretch for 2 lines also( in this case these two lines have to be deleted as these two line together a printf statement). say my file is as follows:
Code:
$cat testfile.txt
1. pritnf 'this is first line ' .
2. printf ' this is second line '
'this is continuous line ' .
3. print ' this is 3rd line '
' it is still there '
' now its over ' .
4. set a = b
5. MOVE A TO B
output :
4. set a = b
5. MOVE A TO B
---------- Post updated 05-31-13 at 04:02 AM ---------- Previous update was 05-30-13 at 10:23 PM ----------
And is there any way to use grep in this script to reduce the repetations to the minimum. i mean it should not the repeat the output as a result of grep.
I have searched the forum for this - forgive me if I missed a previous post.
I have the following file:
blah blah blah
blah blah blah
blah blah blah
blah blah blah
blah blah blah
alter table "informix".esc_acct add constraint (foreign key (fi_id)
references "informix".fi ... (5 Replies)
I was just looking at this post: https://www.unix.com/shell-programming-scripting/22893-delete-multiple-empty-lines.html.
and I am looking to achieve the same with sed. So the idea is to delete lines from a file where a certain field has no value.
Inputfile:
EMID MMDDYY HOURS JOB EMNAME
0241... (4 Replies)
Can somebody explain why my sed command is not working.
I do the folloinwg:
Generates a binary file to /tmp/x1.out
/usr/lib/sa/sa2 -s 4:00 -e 8:00 -i 3600 -A -o /tmp/x1.out
decodes the file (no problem so far)
sar -f /tmp/x1.out
When I do this it does not appear to delete the... (4 Replies)
:confused:Hi All,
I need help on removing lines in a text file.
Sample file :
When there is a match ip for IPAddress in my `cat ip.out`, proceed delete line above until string "Comp" is found.
Thank you very much.
---------- Post updated at 12:56 AM ---------- Previous update was... (4 Replies)
Hi,
I have a file with values,
file1:
BELL-1180-1180-81|577:1017|
BELL-1180-1180-81|jm10i-auto-stub1/577:102|
BELL-1180-1180-81|jm10i-auto-stub1/577:101|
BELL-1180-1180-81|jm10i-auto-stub1/577:1700|
BELL-1180-1180-81|jm10i-auto-stub1/577:1699|
I need to remove the lines which has... (9 Replies)
Hi
I am having some issue editing a file in sed.
What I want to do is, in a loop pass a variable to a sed command. Sed should then search a file for a line that matches that variable, then remove all lines below until it reaches a line starting with a constant.
I have managed to write a... (14 Replies)
Gents,
I would like to remove some lines from a big file ( file2).
The objetive is to remove all the lines in file2 containing a certain string which are in file data2delete..
file data2delete contens:
2573.0 7260.01
2893.0 7255.01
2903.0 7245.01
2897.0 7255.01
2561.0 7255.01... (6 Replies)
Hi,
I am new to unix and i started some scripting recently. Please go through the following script i wrote.
#!/bin/sh
file='path../tfile'
file1='path../tfile1'
rmfile='path../test2'
C1=1
C2=1
exec 3< $file1
while read LINE1; do
read LINE2 <&3
a=$LINE1
b=`expr $LINE2 - 1`
... (1 Reply)
Discussion started by: Subbu123
1 Replies
LEARN ABOUT DEBIAN
prunehistory
PRUNEHISTORY(8) System Manager's Manual PRUNEHISTORY(8)NAME
prunehistory - remove file names from Usenet history file
SYNOPSIS
prunehistory [ -f filename ] [ -p ] [ input ]
DESCRIPTION
Prunehistory modifies the history(5) text file to ``remove'' a set of filenames from it. The filenames are removed by overwriting them
with spaces, so that the size and position of any following entries does not change.
Prunehistory reads the named input file, or standard input if no file is given. The input is taken as a set of lines. Blank lines and
lines starting with a number sign (``#'') are ignored. All other lines are should consist of a Message-ID followed by zero or more file-
names.
The Messge-ID is used as the dbz(3) key to get an offset into the text file. If no filenames are mentioned on the input line, then all
filenames in the text are ``removed.'' If any filenames are mentioned, they are converted into the history file notation. If they appear
in the line for the specified Message-ID then they are removed.
Since innd(8) only appends to the text file, prunehistory does not need to have any interaction with it.
OPTIONS -p Prunehistory will normally complain about lines that do not follow the correct format. If the ``-p'' flag is used, then the program
will silently print any invalid lines on its standard output. (Blank lines and comment lines are also passed through.) This can be
useful when prunehistory is used as a filter for other programs such as reap.
-f The default name of the history file is /var/lib/news/history; to specify a different name, use the ``-f'' flag.
EXAMPLES
It is a good idea to delete purged entries and rebuild the dbz database every so often by using a script like the following:
ctlinnd throttle "Rebuilding history database"
cd /var/lib/news
awk 'NF > 2 {
printf "%s %s %s", $1, $2, $3;
for (i = 4; i <= NF; i++)
printf " %s", $i;
print "
";
}' <history >history.n
if makehistory -r -f history.n ; then
mv history.n history
mv history.n.pag history.pag
mv history.n.dir history.dir
else
echo 'Problem rebuilding history; old file not replaced'
fi
ctlinnd go "Rebuilding history database"
Note that this keeps no record of expired articles.
HISTORY
Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.9, dated 1996/10/29.
SEE ALSO dbz(3), history(5), innd(8).
PRUNEHISTORY(8)
05-31-2013
