General :: Use A For Loop "access Fields" Or Awk?
Mar 17, 2011
I have a tab delimited file with 2 columns.
2224 23943843
5494 39843843
8372 48938384
I have to loop through this file and copy the files with the first field to a new name that contains both the first and second field. To be more specific, file quote2224.pdf has to be copied to 23943843_quote2224.pdf file quote5494.pdf has to be copied to 39843843_quote5494.pdf I don't know how or if it's even possible to use a for loop and access both fields. I don't know how to copy files in awk.
View 1 Replies
ADVERTISEMENT
Sep 1, 2010
I have a mytext file with month and year as two separate fields. likemytext fil
08 2010
09 2010
10 2010
........
........
........
I want to read the values of each field i.e., month and year into an awk script.
View 10 Replies
View Related
Mar 7, 2010
When I deal with an array in a function I con not access to the content of array in a for loop, but out of a for loop I can access to them! for example
[code]...
In a function when I send as parameter, in a for loop it prints the content of array and out of a for loop it prints the address of arr[i]
View 5 Replies
View Related
Jul 12, 2011
I have a file1:
Code:
$ cat PF(1).out
Tmp39 PF10271.3 423 ENSP00000326063 488 1.2e-201 41-478
Tmp39 PF10271.3 423 ENSP00000338165 492 1.9e-200 46-479
[code].....
View 14 Replies
View Related
Feb 7, 2011
I'm trying to use awk to remove rows that are duplicates based on 3 fields, and I want to keep the on that has the higher value in another field. I'm working in C-Shell. For example the below is greped out of a larger data set to use in here as example:
Input (Field separator is a comma:
Code:
4180,-6999,MA,BARNSTABLE,BOURNE,1,1.7,1700,PM,1/26
4180,-6999,MA,BARNSTABLE,BOURNE,1,3.5,2025,PM,1/26
4180,-6999,MA,BARNSTABLE,BOURNE,1,1.0,1511,PM,1/26
4180,-6999,MA,BARNSTABLE,BOURNE,1,5.7,0540,AM,1/27
[Cpde]....
View 1 Replies
View Related
Mar 28, 2010
I'm writing a script that picks out the time offset in a string, but am trying to figure out a way to print a field based on a match (likely needs to be regex).
Here are some sample fields:
09.900. Either add -12:-1: 0 to existing offset, or restart the slicer with no offset or with offset=00
09.900. Either add -12:-1:30 to existing offset, or restart the slicer with no offset or with offset=00
09.900. Either add -10: 0:-47 to existing offset, or restart the slicer with no offset or with offset=00
What I need would be "-12:-1: 0" from the first line, for example. I was just using "awk '{print $4}'" originally but because of the damn space in the 1st and 3rd lines by the 0, that doesn't work for me. How to grab those fields correctly for all cases?
View 3 Replies
View Related
Feb 22, 2010
I'm looking for a way to dynamically modify a fied in the SQL file.
Example,
INSERT INTO `TABLE` VALUES(1AADFDF,DFF33D,10023,SOMEDATA, SOMEDATA);
INSERT INTO `TABLE` VALUES(1AADFDF,DFF33D,10098,SOMEDATA, SOMEDATA);
[code]....
The third field in this SQL file is what needs to change to n+1
"10023" needs to change to "1"
"10098" needs to change to "2"
"10123" needs to change to "3"
"10983" needs to change to "4"
etc...
I tried with awk and sed, but since both require the usage of ' (single quote), my variable fails to get updated. I know i can use cut and recreate the sql statememnt, but i believe there should be easier way using sed or awk. Would anyone know of any creative way to get this to work in one-liner? This needs to be a part of the script preferable without making call to external file.
View 1 Replies
View Related
Mar 29, 2010
I am in one of those terrible situations...My motherboard died and I am left with a nvidia nforce raid stripe set that I need to get data off. I guess I should have setup that backup regime. Some search results have suggested that dmraid may be my white knight. I have pulled the data off each of the disks (3 of them) into image files (using ddrescue) and created loop devices (/dev/loop[1-3], using losetup).
I am running 32bit ubuntu 9.10 btw. When I do a "dmraid -ay" it tells me it found a raid set but has not activated it. When I do a "dmraid -r" it tells me I have a raid5 array on one of my /dev/sd? devices. dmraid seems to be ignoring my loop devices . Does anyone know if dmraid actually works with loop devices? If it does is there a way for me to point it directly at the devices and get it to do its auto-magic?
View 1 Replies
View Related
Dec 13, 2010
For example: file a:Tom:blackLily:pinkfile b:Tom:bigKate:smallAnd, the result:join -t: a1 a ot:Tom:black:bigLily:pinkBut what I want is:Tom:black:bigLily::pink
View 2 Replies
View Related
Jan 10, 2011
I have a couple of MP3s that have duplicate fields in their ID3 tags. Let me show you what I mean: This is causing problems with some media players. Is there a tool that can automatically fix these MP3s in batch? I'd prefer a free Windows or Linux program. I'm not afraid to work on the command line if necessary.
View 2 Replies
View Related
Dec 2, 2010
I am trying to remove the space between the 2nd and 3rd fields but just cannot work out how to do it. I've considered sed, cut, awk...I know with sed you can replace all instances within a file but can you also specify to remove, say, the 2nd instance of a space in each line (this would be perfect for me)?
DAAE 60 402 Bejaia Algeria 1 36-43N 005-04E 36-43N 005-04E 2 2 P
DAAG 60 390 Dar-El-Beida Algeria 1 36-43N 003-15E 36-43N 003-15E 25 25 P
DAAJ 60 670 Djanet Algeria 1 24-33N 009-28E 24-33N 009-28E 1054 1054 P
[code]...
View 3 Replies
View Related
Feb 26, 2011
I have following in cpuinfo:
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
[code]....
View 2 Replies
View Related
Nov 10, 2010
./test.sh: line 3: syntax error near unexpected token `cd'
./test.sh: line 3: `cd $f'
--------------------------------
[code]....
View 1 Replies
View Related
Apr 27, 2010
I have a filename file-name-here-1.2.3-i486-2.tar I would like to know how to remove the last two fields leaving only: file-name-here-1.2.3
I can use:
x=file-name-here-1.2.3-i486-2.tar
echo ${a%-*}
to remove the last field (after -) but how do i remove the last two in one fell swoop?
View 2 Replies
View Related
Mar 7, 2011
I have a requirement to check the following conditions..If my folders are not A and B then list files in the directory else no listing the filesso my if loop is some thing like this.
Code:
if [ $dirName = "C" && $dirName != "A" && != "B" ] then
ls -la
[code]....
View 1 Replies
View Related
Apr 21, 2010
I have bash 4.0. I used the following for loop example, but all it outputs is "{1..10} instead of the actual numbers one through ten. why?
Code:
for a in {1..10}
do
echo -n "$a "
done
View 5 Replies
View Related
Mar 23, 2011
I have a server hosting 100+ websites. I need to quickly identify which websites are configured with a database. There are way too many to manually check every website for a PHP file with a database name. So, I created a list of all databases from MySQL and put them in a text file. I then exported the text file to a shell variable and used it in a for loop.
bash variable
Code:
DBLIST=`cat dblist.txt`
Example of $DBLIST
Code:
db1 db_testing2 database_clientname production words4cheap
for loop
Code:
for db in $DBLIST; do find . -type "f" -iname "*.php" -exec grep -i $db '{}' ; -print; done
Note: my find statement starts searching at . which is the directory that contains all of my websites and their data, each website is setup in a sub directory, identified by it's domain name.
Example: I'm in /var/www. Beneath /var/www are a list of directories:
[URL]
However, this is taking too long (it's been running most of the day) and I was wondering if there wasn't an easier way to accomplish what I'm trying to achieve?
View 4 Replies
View Related
Feb 11, 2010
i have tried a lot to add floating values in while loop using bc, but no sucess!!!
script is :
read a1
read a11
[code]....
View 5 Replies
View Related
Jun 28, 2010
I am trying to do some shell programs. I tried some sites regarding the while loop, they give the structure as:
Code:
while [ n1 -lt 500 ]
do
echo $((n1+100))
done
But the below code also worked for me:
Code:
while ((n1 > 500))
do
echo $((n1+100))
done
By using (( )) I could use while, for. But the documentations didnt follow this way. I mainly use this for datastructure programming.
View 4 Replies
View Related
Apr 26, 2010
The problem of loop detected when resolving the name from dns.Why the problem of loop detected comes when name is resolving from dns.
View 4 Replies
View Related
Jun 15, 2011
I am having trouble getting the while loop to execute in the ssh command:ssh $USERID@serverX "while read line do echo $line done<$list_dir/cost_feed.lst.old"Error:bash: -c: line 1: syntax error: unexpected end of fileI have managed to use simpler commands with ssh like:ssh $USERID@serverX "pwd; cp x y"I expect that I need to add some combination of escape characters or semicolons
View 3 Replies
View Related
May 25, 2010
First, I'm sorry if some one has already posted this but I can't find it. I recently installed Ubuntu 10.04 LTS on my laptop and I have a dual boot between that and Vista. I cannot use Ubuntu for more than an hour or two before it won't let me type in text fields. When this happens, the menues (Applications, System, ect.) stop working also.
I can continue to browse the internet and play music when this happens. The problem can be recreated consistently by using OpenOffice Word Processor. I can not type more than a sentence in OpenOffice before this problem occurs. The only way to fix it is to hold the power button to shutdown.
View 3 Replies
View Related
Oct 8, 2010
I have a file records as follows:
Jane pepe@pepe.biz
john@pepe.net John
Joe joe@willxyz.org
How can I get that always first field be given name and second one be the mail address?
I've tried
Code:
awk '$1 ~ /@/ { a=$1 ; $1=$2; $2=a; print }' file
But that doesn't worked
View 5 Replies
View Related
Jan 31, 2010
Do you know how to convert an animated GIF (only two pics in loop) to FLV or AVI?
I didn't search for a Microsoft alternative that maybe could run with WINE, because I really prefer a native one; also a java version will be fine.
View 3 Replies
View Related
Feb 2, 2010
While I was trying to compile a C shared object library, I accidentally created two symbolic links which point to each other. Is there a way to get rid of them without nuking the whole directory? I read that the only way to break a symbolic link is to delete the file it points to, but I'm sure there must be another way.
View 3 Replies
View Related
Jun 16, 2010
I have a large NFS share with a variety of software ISOs on it. I've only tried this on Red Hat Enterprise Linux, but when trying to do the following, the mount comes back with an error indicating no permissions to mount. Why would this be happening?NFS is mounted thusly:mediaserver:path/to/isos /media/nfsThis is the mount call that failsmount -o loop /media/nfs/product.iso /tmp/productIf I copy the ISO, there is no issue. The NFS share is mounted rw.How can I loop mount the ISO from the NFS share without copying it first?
View 2 Replies
View Related
Jul 31, 2010
how to convert an animated GIF (only two pics in loop) to FLV or AVI? I didn't search for a Microsoft alternative that maybe could run with WINE, because I really prefer a native one; also a java version will be fine.
View 1 Replies
View Related
Apr 11, 2011
I multi-boot several Linux distributions with an assortment of additional data partitions. I get frustrated whenever fsck is forced during boot. (It ONLY happens when I'm in a hurry don't you know...) So I wrote a script to automate forced fscking when I do have the time. (And/or while I'm doing something else in another workspace.
Because I multi-boot, I've learned that udev doesn't always assign the same device name to each drive for all distributions. I've had the same partition identified as hda5, sda5, & sdb5 by different distributions (without doing anything to affect the boot order) So my solution is to keep a list of partitions in a specific file on each distro with valid device names according to that distribution's udev process. Actually I'd use LABEL= instead but the labels don't show up in /etc/mtab, and I like to make sure a partition isn't mounted before I try to fsck it.
I can make this work in a for loop using cat. But I've seen so many things about NOT using cat that I wanted to rebuild my script. I can make this work with a redirect instead of cat via a while loop, But I "LIKE" old style for loops. But I can't seem to find a way to make a redirect work with one. I thought this might make a good first �LinuxQuestions.org� question. I'm also open to any other suggestions on better/alternative methods... Is it possible to redirect from a file into an actual for loop?
My script is as follows:
Code:
#!/bin/bash
# FsckEm I script to force file system checking on unmounted ext2/ext3/ext4
# partitions in preselected list. FsckEm accepts no options. Partition
[code]....
View 5 Replies
View Related
Feb 19, 2010
I wrote a script for copying mp3 files to my girlfriend's mp3-player and it looks like this:
Code:
mount /dev/sdc /test -o sync
for i in *.mp3; do
[code]...
View 13 Replies
View Related
Jun 25, 2011
How do I write a loop command to periodically check a given folder and then create a djvu file from any pdf it finds.pdf2djvu works great but I'm looking to set up a "hot folder" for general office staff to use.
View 3 Replies
View Related
