11-02-2011
Did you create the .txt file in Windows? It will contain garbage carriage returns which sed will consider as part of the text.
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have to match a certain pattern of string in my shell script:
6.0.4.11.9
7.5.1.7.1
First Number can be 6 or 7
Second number can be 0 or 5
Rest all numbers can be between 1-99
I am using following egrep:
egrep ^\.\.\.\.\$ filename
But why is the above regular... (1 Reply)
Discussion started by: som.nitk
1 Replies
2. Shell Programming and Scripting
Hi
I need to get text that are within ""
For example
File:
asdasd "test test2" sadasds asdda asdasd "demo demo2"
Output:
test test2 demo demo2
Any help is good
Thank you (12 Replies)
Discussion started by: blito_loco
12 Replies
3. UNIX for Dummies Questions & Answers
Hi ,
I am learing sed
echo abc 123 def 456 | sed 's|\(*\) \(*\)|\1|'
is returning abc def 456
i was hoping abc def "\1" should only print the occurence of the first pattern
but according to my understanding it is just removing the first occurence of the second pattern... (7 Replies)
Discussion started by: max_hammer
7 Replies
4. Programming
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Discussion started by: jessy83
1 Replies
5. UNIX for Advanced & Expert Users
Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
problem_arr=(PRS111 PRS213 PRS234)
j=0
while } ]
do
k=`expr $j + 1`
sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt
---some operation goes... (11 Replies)
Discussion started by: InduInduIndu
11 Replies
6. Shell Programming and Scripting
I am learning SED and just following the shell scripting book, i have trouble understanding the grep and sed statement,
Question : 1
__________
/opt/oracle/work/antony>cat teledir.txt
jai sharma 25853670
chanchal singhvi 9831545629
anil aggarwal 9830263298
shyam saksena 23217847
lalit... (7 Replies)
Discussion started by: Antony Ankrose
7 Replies
7. Shell Programming and Scripting
Hi , I need to remove pipe character from a |^ delimeted file.
Something like |^tran|sformers||^|revenge |of fallen|^ to
|^transformers|^revenge of fallen|^...
Cold anybody please help to build the regular expression using sed .
many thanks.
Please use code tags next time for... (1 Reply)
Discussion started by: kokjek
1 Replies
8. Shell Programming and Scripting
Hello Everyone,
I have a file sam1 with the below content
SYSYSID;MANDT;/SIE/AD_Z0M_INDX;/SIE/AD_Z0M_KEY1
echo $Regex
\bSYSYSID\b|\bMANDT\b|\b/SIE/AD_Z0M_INDX\b|\b/SIE/AD_Z0M_KEY1\b
cat sam1 | grep -Eo $Regex
I expect the result as
SYSYSID
MANDT
/SIE/AD_Z0M_INDX
/SIE/AD_Z0M_KEY1... (4 Replies)
Discussion started by: sam99
4 Replies
9. UNIX for Beginners Questions & Answers
If i do below command in unix prompt which static values (ie 27..97), it is working fine and gives desired output
>ls -d $WORKDIR/batch/somefilename_{27..97}.* 2>/dev/null
somefilename_27.sometxt
somefilename_28.sometxt
somefilename_29.sometxt
..
somefilename_97.sometxt
But if i want... (2 Replies)
Discussion started by: haiderali
2 Replies
LEARN ABOUT CENTOS
btrfs-image
BTRFS-IMAGE(8) System Manager's Manual BTRFS-IMAGE(8)
NAME
btrfs-image - create/restore an image of the filesystem
SYNOPSIS
btrfs-image [options] source target
DESCRIPTION
btrfs-image is used to create an image of a btrfs filesystem. All data will be zeroed, but metadata and the like is preserved. source is
the special file corresponding to the device containing a btrfs filesystem. (e.g /dev/sdXX). target is the image file that btrfs-image
creates. When used with -r option, btrfs-image restores the image file from source into target.
OPTIONS
-r restore metadump image.
-c value
compression level (0 ~ 9).
-t value
number of threads (1 ~ 32) to be used to process the image dump or restore.
-o use the old restore method, this does not fixup the chunk tree so the restored file system will not be able to be mounted.
-s Sanitize the file names when generating the image. One -s means just generate random garbage, which means that the directory indexes
won't match up since the hashes won't match with the garbage filenames. Using -ss will calculate a collision for the filename so
that the hashes match, and if it can't calculate a collision then it will just generate garbage. The collision calculator is very
time and CPU intensive so only use it if you are having problems with your file system tree and need to have it mostly working.
-w Walk all the trees manually and copy any blocks that are referenced. Use this option if your extent tree is corrupted to make sure
that all of the metadata is captured.
AVAILABILITY
btrfs-image is part of btrfs-progs. Btrfs is currently under heavy development, and not suitable for any uses other than benchmarking and
review. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for further details.
SEE ALSO
btrfsck(8),mkfs.btrfs(8)
BTRFS-IMAGE(8)