I have requirement to delete some log files from a directory if a string"deletethisfile" is found.Then restart the application servers.1. Search for the string ?deletethisfile? in server.log file under a directory, If found 2. Stop that particular server.3. Delete the log file 4. Restart the server.
View 2 RepliesI have such a file(test.txt):
abc 123 456
abc 256 145
axd 125 225
[code]...
I want to search a file for a particular pattern and if pattern found replace the line with new text. i am using awk 'match($0,"pattern") != 0 {print $0} ' filename to check if the pattern exists.how do i get the line number of the pattern and delete that line and replace the line with my new text?
View 1 Replies View RelatedI am trying to create a shell script, on taking a input file as parameter, which need to do 3 things
1) create a copy of existing file.
2) add a new line to the copied file.
3) strip off all the absolute paths inside the copied file
The first 2 points are straight forward. but i am finding it difficult to acheive the 3rd point. myself not very good with awk and sed. but gave it a shot in vain. For example, the input script consists of below,
PROGRAM=`/usr/bin/basename $0`
HOST=`/usr/bin/uname -n`
echo Start $PROGRAM `/usr/bin/date` |
/usr/bin/tee -a $LOG
The output of the script should look like,
PROGRAM=`basename $0`
HOST=`uname -n`
echo Start $PROGRAM `date` |
tee -a $LOG
I have several (vhdl) files containing a pattern with newline characters that I need to replace by another pattern that also contains newline characters.
I start with something like:
Code:
I want to replace it by something like:
Code:
(I need to paste some lines)
As I need to do this (very) often I want to use a shell script.
I tried:
1.
Code:
result:
Code:
2.
Code:
result:
File remains unchanged
3.
Code:
result:
Code:
4.
Code:
result:
Displays the unchanged testfile
How I can automate the pattern replacement?
Code:
Just using shell scripting, how can I insert text into the middle of a file name. The file has a predictable pattern, let's say 3 letters and 3 numbers and I want to insert text in the middle of those 2 patterns. Say ABC123 is the file name. As a result, the file name should be ABC.blah.123
View 2 Replies View RelatedI'm new to the shell scripting. can any one help in creating shell script for matching the content of the specific variable with file. it should remove that line from the file if line is containing same value as variable and keep the other content as it is.i used grep -v for accomplishing the same. But grep will remove the pattern which is similar.For eg. Assume file "test" contain datas :aaffif i used grep -v command for the pattern "a" to this file this will remove content "aa" from the file. I want the pattern only "a" should remove from the file, if it is existing. otherwise it should throw alert content not exists.
View 5 Replies View Relateddelete a file on a remote server using shell scripting.
View 14 Replies View RelatedHow can I use grep -Ev "pattern" not only to delete the matching "pattern" but to edit and save the file permanently as well
View 2 Replies View RelatedI have to use sed with this problem, and sed is extremely complicated, they could probably teach a whole class on this entire function.
Here's an example to show what I need to do:
Code...
how would I say that every line before I reach the first match of "sweet" should be deleted so that the output will look like: Code...
I have found many information about how to delete/grab a line in a text file including delete line with match a pattern but I did not find info about how to delete a line which match a pattern of a particular column only.
for example mydata.txt:
id type x y z
1 6 0.474611 0.227223 0.583947
[code]....
I'm setting up an Ubuntu server and I keep getting strange problems with my editor.I'm not sure if this is because my keyboard configuration is wrong or I screwed up the installation but regardless it's quite frustrating.
When using the movement keys (arrows and numpad) I get "[" brackets and "C"s, if I hold down or push down on the key hard a list of errors and text comes up, usually involving something that says something like:"Mount disabled" or "____ disabled press CONTROL-X to restart the shell"Similair problems are also found in vi (when in insert mode).I have been plagued with text editor problems and have need several reboots just to get out of a file, often because it just flat out stopped responding to keyboard commands.
I have to admit that I register to LQ after I failed to search for similar solutions.let me see whether I can explain my problem clearly. I need to extract a single report from a big file. The big file looks something like this:
Report for yyyyyy
Your info 999-9999999
End of Report
[code]....
I need to search for a user provided string, say 999-9999999, in the big file. Then I have to extract the single report. My logic is simple,
1) find 999-9999999
2) backward search for "Report for", note down the line number
3) forward search for "End of Report", note down the line number
4) extract the record by using info found from step 2) and 3).
I am trying to do this in bash, with awk and sed (I am new to both).
I just installed apache2 and i can't restart the service, i get: Code: sudo: /etc/init.d/apache2: command not found
View 6 Replies View Relatedi have a file containing contents as
1 2 3
2 2 3
11 2 3
now i want to delete the line which first column content is 1. so, if i pass the parametere 1 to function delete_row. is should remove the first row as
2 2 3
11 2 3
and then write the contents in file.
I am writing a shell script to delete a file if it exists.
View 11 Replies View RelatedI have two partitions installed on my computer, Ubuntu 10.04 (part. sda2) and Windows XP (part. sda1). When I restart my computer I get this message:
error: file not found
grub rescue>
I thought this must be a grub error, so I booteda Super Grub disk (v 0.9799). Then I tried to fix grub with the Super Grub disk, but I got this message:
Error 15: File not found
Booting 'not lucky'
pause SGD has NOT succeeded
SGD has NOT succeeded
I then booted the system using an Ubuntu live CD, version 10.04.I tried to repair the sda2 Ubuntu partition. At a terminal prompt I ran [code] sudo e2fsck -f -y -v /dev/sda2. This did not work. It ended with "e2fsck aborted". I could not repair the Ubuntu partition,
I tried to open the sda2 partition by running the terminal command [code] sudo mount /dev/sda2 /mnt. I received the following message:
mount: wrong fs type, bad option, bad superblock on /dev/sda2
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
Using the ntfs-config program, I can easily mount the Windows XP partition (sda1). It mounts and I can read or write the files on the Windows XP partition. So at least Windows XP is not damaged. I downloaded and ran the boot info script, and here are the results:
Code:
Boot Info Script 0.55 dated February 15th, 2010
=> Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in
partition #2 for /boot/grub .....
I have 2 external hdd in wich I have all my files.... yesterday, I have copied all the files from hdd1 to hdd2 and I want to eliminate duplicates so I used FSLint to find them, now, I have a txt file that looks like this code...
now I want to make a shell script to delete all the files/entries (read from the log file) that begin with code...
I have 2 external hdd in wich I have all my files. yesterday, I have copied all the files from hdd2 to hdd1 and I want to eliminate duplicates so I used FSLint to find them,now I want to make a shell script to delete all the files/entries (read from the log file) that begin with.
View 14 Replies View Relatedif the given pattern exists in the file with the very next line starting and endingwith the same pattern , delete the line that starts and ends with the given pattern.So upon running on this file
hai people<PATTERN> we had
<PATTERN>a lot of fun<PATTERN>
writing scripts
[code]....
I have 2 external hdd in wich I have all my files.... yesterday, I have copied all the files from hdd2 to hdd1 and I want to eliminate duplicates so I used FSLint to find them, now, I have a txt file that looks like this:
Code: /media/My Book/!!!MIS DOCUMENTOS/Documentos/2 sep2003-jun2009 USB/!TESIS/TESIS/TESIS CVT LABVIEW Y CODEWARRIOR/LabVIEW85RuntimeEngineFull.exe /media/My Book/HDD_Toshiba/Borrable/Pen_Drive_4GB/Tesis/Super CD de la tesis/LabView/LabVIEW85RuntimeEngineFull.exe multiplied by millions of entries...
now I want to make a shell script to delete all the files/entries (read from the log file) that begin with:
Code:
/media/My Book/HDD_Toshiba/**** Since HDD_Toshiba is the folder in hdd1 (MyBook) that contains all the files from hdd2
I have a question about sed programming, actually a one-liner for which I cannot find a solution, right now. I need to delete a line matching a specific pattern only if it is the last line. In practice, I would put together the following:
Code:
#
# This deletes the last line of a file
[code]...
I am trying to edit a print file.
For every occurence of the ^L form feed character I need to remove 5 blank lines after it but still keep the ^L.
I am a rare user of sed and am ok with the basics but am struggling with this.
How I prohibit to do restart after ctrl+alt+delete ?
View 1 Replies View RelatedI'm writing a bash script to search html files, and when I find any occurrence of an img src tag like this:
<img src="123-picture-normal.jpg" alt="some random user entered text" border="0">
I want to add a second line below it that looks like:
<img src="123-picture-thumbnail.jpg" alt="some random user entered text" border="0">
All I need to do is duplicate the line but replace "normal" with "thumbnail"
Each file can have multiple img src tags with different numbered jpgs.
I have a feeling this is a job for sed, but I'm struggling with it. Any ideas?
I have a file with a number of strings like the ones below
string1#m1asdfe23easdf23wefas
string2#mfaaeb2vr1rhserh
anotherstring#ji89ensrsegr
anotherone#m1ynmdt324nsdt
I'm trying to delete everything after #** so that
string1#maasdfeaveasdfawefas
string2#mfaaebvrserhserh
becomes
string1#ma
string2#mf
tried sed 's/#..*//g' but as you all will know it returns string1, string2 etc.
I want to replace a pattern in a file.The file format is given below.
111111
path=/home/fun/
222222
path=/home/fun/
[Code]....
I want to replace "path=/home/fun" with another pattern, but only under "111111", all the others should be the same.
i'm just curious if i can search for the dir/file pattern in the single "find" command?
here is an example:
dir1/dir2/dir3/file.txt
dirXX/dirYY/dir2/dir3/file.txt
dir1/dir4/dir3/file.txt
i want to search for the pattern "dir2/dir3/file.txt"
I want to go through a log file and find pattern1 and then a pattern2 only after pattern 1.So for example I want to know howManyRecords was in 13:30.I figured I grep for "start time for the job" and then only after that (and before the next occurence of that) grep for "howManyRecords". Is this a sane way?
View 1 Replies View RelatedI would like to write a newline delimeted rules file using PCREs for use with the grep command. Grep has the option -f to obtain the search pattern from a file, and option -P to search using PCREs. However, these two options do not work together. The -f option only seems to work with fixed string rules.A friend previously helped me get around this limitation somehow, but I can't remember how he did it. I also would like the ability to add comments at the end of each rule in the file.
View 11 Replies View Related