Ubuntu :: Bash Scripting - To Copy A List Of Files
Dec 6, 2010
I'm writing a bash script to copy a list of files and do some stuff to them. Basically, I have the code written that does what it needs to do, but I can't quite understand why it works. I was hoping someone could clear up my understanding a bit.
Code:
The first line generates a list of files. I wrap each line in quotes because they usually have spaces in the directory names.
The second line changes IFS, and I understand what IFS itself does. What I don't quite get is what the separator becomes with that echo statement. If I'm reading that correctly, the backspace will remove the newline and essentially the result is nothing? I found this solution on a web page somewhere, but it was years old and there was no real explanation.
I have wrote a 1 line command that parses a file, locates the IP Address in the file and then trims the output the way I want it, and then sorts numerically and by uniqueness and then >> appends to output.txt
I can get all the IP's into 1 file "output.txt", but what I am really looking for is some type of way to create a text file, for each IP it finds labeled xxx.xxx.xxx.xxx.txt and also put that ip address into that file..
I am an uploader to a various hosts, so this tiny script me a lot. I make a rar archive and split files with 100mb. I could get 3-4 or even 76 parts of rar files and it would take me some time to paste all these urls to remote upload function of filehosting sites. For example:
Code:
server:/home/cober/downloads/teevee# ls -al total 358784 drwxrwxrwx 2 root root 4096 Dec 8 19:38 .
What I want to do is to create a script that will interpret the following string and save into variables part of its name
m02_+1+7_London_0000$01.cfg as ------X-Y--City--------- X=1 Y=7 City=London
[code]....
then I want to copy the files that go all the files with the same City and X and Y to the same subfolder City/MX.Y I will need some help start doing that. And I think the first would be to get part of the filenames strings into variables.
I have to copy some log files with a cron job; I'd like to copy only the newer files added because I run the script with a weekly cron. all the log files are named like "10-03-29.CVS" and reside in a dir. When I copy I'd like to copy only the files not already copied with the last cron job.
I have a file with joker character patterns: ./include/* ./src/* etc. From the current directory I would like to recursively get the list of files that do not match these patterns.
need a command or script to list all files recursive without directories one line per file, no extra lines like ls -AR1 should print file size and name eg.:
Now in my bash script, I want to get the output /home/user instead of $HOME once read. So far, I have managed to get the $HOME variable but I can't get it to echo the variable. All I get is the output $HOME.
I'm trying to write a bash script that gets the list of files in a directory and puts them into a variable, then checks each entry and outputs them as follows:
item1 is a FILE item2 is a DIR item3 is a DIR etc etc.
I am able to get the list of files into a variable, but unsure how to get the output I want.
How to build a list of files under a directory that may have any permissible characters in the name, that is anything except NUL? The only possible (?) bash data structure to contain a list of such names is an array because NUL cannot be used as a list item separator so no X-separated list can safely be used; there is no "X" that might not be part of a file name. OK -- but how to populate such an array? Here's what I've tried.
Code:
#!/bin/bash # Set up test files dir=$(mktemp -d "/tmp/${0##*/}.XXXXXX") touch $dir/foo $dir/bar
shell scripting in Fedora14I want a script"Find in curent folder for files, and it copy first file he find with name gived by user, if name already exist then echo error message and finish"command usage " bash scriptname copyASname"
smthing like Code: #!/bin/bash for files in /home/user/* do
Lets say I log in to bash, open a file in vi, then using alt-f2 I open a new terminal. After logging in I navigate to a second file and open that in vi. How can I CnP between these two files?
I found this from [URL]. I'm not familiar with this command shift-8-y-y. I follow the vimtutor and use virtual mode. I tried this sequence and was unsuccessful.
And, I read this about registers. I found a mention of using double_quote-p to 'put' or paste the register, but this does not work in a different file. The second file reported the register empty.
Alternatively, I read in the VIM docs, it is possible to open multiple files under split screens. This may be a course to a solution. The need I often encounter has me navigating in a different bash window to find a file, then wishing to copy between the two. Whereas, I imagine, a split VIM window useful for files in the same directory.
AKA "zipping on the fly .. the slow-as-molasses way." The list includes full pathnames to each file, and they're all in subfolders of the same parent folder (which, unfortunately, is not the root folder of the drive or system on which the files reside). A cleaned-up and radio-ready portion of the list looks like
What I'd like to be able to do is zip all the files in the list into a single archive, to avoid the step of having to copy them to the same location (presumably another folder on the HD) and then zip that folder. I'm more inclined to make provisions about extracting to a single folder at some other time. Is this possible in BASH, or would I have to consider a faster, more robust scripting language such as python or perl?
I'm trying to get the substring of a string in bash. Here is the code: Code: #! /bin/bash LOCAL_HOSTNAME=$(hostname) echo $LOCAL_HOSTNAME INDEX_OF=`expr index "$LOCAL_HOSTNAME" 1` echo $INDEX_OF SERVER_HOSTNAME=${LOCAL_HOSTNAME:0:INDEX_OF} echo $SERVER_HOSTNAME
It's supposed to get the current hostname, assign it to variable LOCAL_HOSTNAME, get the first occurrence of "1" from hostname and assign value to INDEX_OF, the get the substring from variable LOCAL_HOSTNAME (starting at index 0 through INDEX_OF) and asign it to SERVER_HOSTNAME. No matter how much I've tried it keeps throwing Bad substitution error at the substring. I've searched and it says it has to be bash... but it is bash, both the sh script and the running shell. The LOCAL_HOSTNAME and INDEX_OF variables are ok.
Here is the output: I've also tried to get the substring without the INDEX_OF but it gives the same error: SERVER_HOSTNAME=${LOCAL_HOSTNAME:0} Code: host1 5 test.sh: 7: Bad substitution
I have a bash script that inserts some text onto every image at a certain place within a directory.
Heres what I have (from a German friend who appears online once in a blue moon), this is the line that resizes to a maximum of 800 either width or height and puts in the text 'text goes here'.
Now, I would like to know how to place a PNG image (a watermark, so to speak) over all images within a directory in a certain place, so how would I go about modifying this line to place an image instead of the text?
I want to design a kickstart file that creates an unattended installation (I've passed that part). After it installs, I want it to automatically read the device's MAC address and change the hostname to match the MAC address with the separators removed. (For example if the MAC address is 01-02-03-04-05-06, the prompt after login should read "root@010203040506")
I know this is entered in the "%post" section of the kickstart file, and I know I'm supposed to use the "cut" and "sed" commands, but I have no idea what I'm doing or how to do it. script so I can copy/paste it into my kickstart file?
I need to find a way to download the attachment from a daily report e-mail to me. The kicker is it will need to be down with a cron tabbed bash script.For example, which linux based CLI client is best suited to be scripted?
I'm trying to put together a script that will quickly run through an archive directory of log files that are named by day of the month 01.gz, 02.gz, 03.gz.... 31.gz. The script uses gunzip -c | grep | wc to count up the total number of hourly occurrences of a filename and outputs the results to stdout.
The only snag I have left is the octal limit when it gets to 08 and 09. I've seen examples using perl and awk, but this script uses a number of nested for loops and if statements that I don't want to have to rewrite in a different syntax. I found that I can use num=10#08 to set that variable to a base 10 instead of a base 8, but then I lose the leading 0 again when it passes the number to the next filename variable.
I'm sure I've done this before and am having a brain fart.
I have run into this a couple of time this last month:
I have a list of torrent files (blahblahhexblah.torrent) saved in a text file. I would like to read the text file and populate the client directory.
I can echo the file using:
But I cannot remember how to pipe the output into the directory, nor can I find any resources that describe the process.
Interestingly enough, I've had a couple of opportunities to do similar tasks with passwords and privileges and even across the LAN in the last few days. Solving this problem will help me solve the others for next time.
You are probably using systemd (check it with ps --pid 1) and therefore /etc/init.d isn't considered for autostart. Here can you find some information about systemd and autostart [1]. As far as I know systemd isn't intended to start applications with systemd. I recommend you to use the autostart feature of your window manager or desktop environment or at least the .xinitrc.
I'm trying to get an output of a file in numeric order. Basically I need the starting number and the ending number in sed this into anther file. The test2.lis file I'm just awk'ing for the first row and if its out of order put it in order so I can grab the first and last numbers. I'm sure I can do this all in an array. The first sed command gets rid of blank lines and outputs it to a file. Then I head and tail for the first and last number then I want to sed those numbers into a file that exsist.
I am working on a simple script that should take two command line arguments, a [number] and a [name]. The first thing the script should do is check to make sure that no more and no less than two command line arguments have been entered when calling the script - an error message should be delivered if the condition is not true.
If two args have been entered, then the message 'processing "scriptname"' should appear, where scriptname is the name of the script being called. The script should then write to the screen "Hi [name]!", and should write this phrase [number] of times. For example, the command $ myscript 2 joe would produce the output: I have read the manual many times looking for examples, and I am very close by virtue of my own efforts. Further, I have searched these forums and others for good examples, which have also gotten me very close. Still my script is not completing the objective, and I am wondering if someone could point me in the right direction. Script:
