Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
"Create a shell script that changes the selected word to another word in all files from selected archive. The script has 3 parameters: archive, old-word, new-word."
2. Relevant commands, code, scripts, algorithms:
This is a begginer's level exercise, we were instructed to use simple solutions such as loops
3. The attempts at a solution (include all code and scripts):This was my attempt:
Code:
for filename in *
do
sed "s/old-word/new-word/g" "$filename" >temp
mv temp "$filename"
done
My TA told me this but I believe I could not understand how to do that: "you should make an error-proof script that does not overwrite any file. If I
would have a file called 'temp', you will overwrite it. The same will happen if
two people will run your script simultaneously.
It should work with commandline parameters also. In case of any error it
should report the error to standard error output.
Perform testing on filenames (inside the archive, archive name, directory
names) containing spaces."
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
CVUT "České vysoké učení technické v Praze", Czech Republic, Praha, Miroslav Bursa, Operating systems and networks, we don't have a page for the class that i know of. [/b]
Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
Dear All,
I'm trying to write a shell script that continously checks a certain folder. When a file is placed in the directory securely copies the file to another server.
I've got the secure copying working, but I don't know how to contiously check a directory for a new file and then use that... (3 Replies)
I have a folder with lots of file. e.g. a.txt, b.txt, c.txt.... I want to put these files from the source directory and place them in a destination directory in a specific order, such as /destination/a/a.txt, /destination/b/b.txt, /destination/c/c.txt, ......
Please help. Thx :confused: (3 Replies)
. ./testFile.sh
url=http://ichart.finance.yahoo.com/table.csv?s= suf=&d=5&e=9&f=2009&g=d&a=1&b=4&c=1999&ignore=.csv
wget $url$s1$suf;
sleep 10;
cat header.txt > $s1.txt;
chmod 777 $s1.txt;
sed '1d' table.csv?s\=$s1 >> $s1.txt;
rm -Rf table*
Very new at shell scripting as you can see... (3 Replies)
I have been following a tutorial on bash which has proven to be very helpful. However, i am stuck with a command not found issue when asking for a y/n response from the user. Below is the part of code I believe is giving me grief... I have been trying to work through this for 3 hours now.... Please... (5 Replies)
Hello,
I'm new to Sheel script and I need your help for a script I need to develop (for me).
Indead, I have a software which log all entry from internet and save it in text file.
But, the log is practically unreadable because every 256 characters jump to a new line (even if the message is... (5 Replies)
Hi Guys-
I'm trying to write a script which takes date as input (mm.yy.dd) and search in the current file. If pattern doesn't exist it will then look in a backup directory and so on.
being a newb i'm unable to loop over to the backup directory. hoping for some ideas, i've highlighted the... (1 Reply)
1. The problem statement, all variables and given/known data:
Arguments:
http://farm9.staticflickr.com/8070/8212131370_8b6e8c10c5_c.jpg
I am given these three arguments. $1, $2, $3
The first argument is the path to a directory.
So, how would I go into the directory and compare files?
I... (5 Replies)
So guys basically I was really sick and couldn't attend the labs and lectures and I went to my lecture hoping he would say ok I will help you from the start but he just said google it. So If it's possible to make the assignment and explain more in detail why is that would be really helpfull.
I can... (1 Reply)
Hi everyone, first time visitor to these forums here.
Keeping a long story short I've been attempting to learn how to code in bash. I have VERY little previous experience with coding languages besides simply copying and pasting batch scripts for Windows. So, with that in mind I've followed a... (4 Replies)
Discussion started by: Meta
4 Replies
LEARN ABOUT LINUX
archive
ARCHIVE(8) System Manager's Manual ARCHIVE(8)NAME
archive - Usenet article archiver
SYNOPSIS
archive [ -a archive ] [ -f ] [ -i index ] [ -m ] [ -r ] [ input ]
DESCRIPTION
Archive makes copies of files specified on its standard input. It is normally run either as a channel feed under innd(8), or by a script
before expire(8) is run.
Archive reads the named input file, or standard input if no file is given. The input is taken as a set of lines. Blank lines and lines
starting with a number sign (``#'') are ignored. All other lines should specify the name of a file to archive. If a filename is not an
absolute pathname, it is taken to be relative to /var/spool/news.
Files are copied to a directory within the archive directory, /var/spool/news/news.archive. The default is to create a hierarchy that mim-
ics the input files; intermediate directories will be created as needed. For example, the input file comp/sources/unix/2211 (article 2211
in the newsgroup comp.sources.unix) will be copied to /var/spool/news/news.archive/comp/sources/unix/2211.
OPTIONS -a archive
If the ``-a'' flag is used then its argument specifies the directory to archive in instead of the default.
-f If the ``-f'' flag is used, then all directory names will be flattened out, replacing the slashes with periods. In this case, the
file would be copied to /var/spool/news/news.archive/comp.sources.unix/2211.
-i If the ``-i'' flag is used, then archive will append one line to the specified index file for each article that it copies. This
line will contain the destination name and the Message-ID and Subject headers.
-m Files are copied by making a link. If that fails a new file is created. If the ``-m'' flag is used, then the file will be copied
to the destination, and the input file will be replaced with a symbolic link pointing to the new file.
-r By default, archive sets its standard error to /var/log/news/errlog. To suppress this redirection, use the ``-r'' flag.
EXIT STATUS
If the input is exhausted, archive will exit with a zero status. If an I/O error occures, it will try to spool its input, copying it to a
file. If there was no input filename, the standard input will be copied to /var/spool/news/out.going/archive and the program will exit.
If an input filename was given, a temporary file named input.bch (if input is an absolute pathname) or /var/spool/news/out.going/input.bch
(if the filename does not begin with a slash) is created. Once the input is copied, archive will try to rename this temporary file to be
the name of the input file, and then exit.
EXAMPLES
A typical newsfeeds(5) entry to archive most source newsgroups is as follows:
source-archive
:!*,*sources*,!*wanted*,!*.d
:Tc,Wn
:/usr/lib/news/bin/archive -f -i
/usr/spool/news/news.archive/INDEX
HISTORY
Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.14, dated 1996/10/29.
SEE ALSO newsfeeds(5).
ARCHIVE(8)
11-08-2011
