Is there a safer more efficient way to go about this?
If the goal is to treat every conceivable pathname verbatim ...
xargs treats spaces, single quotes, double quotes, and perhaps also underscores specially. If any of those characters occurred in a filename, your xargs solution would misbehave.
There are xargs options to work with logical lines, but those modes of operation sacrifice a great deal of efficiency for an imperfect workaround (quotes would no longer be a problem, but leading/trailing spaces could be).
Some find/xarg implementations support delimiting pathnames with a null byte.
While the following is slightly more efficient since piping isn't required, the primary advantage is robustness: any legal filename, no matter how bizarre, will be passed intact:
Regards,
Alister
This is going to be part of a longer script with more features, but I have boiled it down to the one thing that is presently stumping me. The goal is a script which checks for updates to web pages that can be run as a cron job. The script reads (from a tab-delim file) a URL, an MD5 digest, and an... (1 Reply)
Hi,
I have multiple commands that i need to run daily on my Solaris servers and watch the output, and actually i do it as multi-tasking. I do not want to put all of them in the file, and run it, and get the entire output at one time.
What i want is that it should ask for before it runs next... (5 Replies)
Hi SSHers,
I have embedded this below code in my shell script..
/usr/bin/ssh -t $USER@$SERVER1 /usr/bin/ssh $USER2@S$SERVER2 echo uptime:`/opt/OV/bin/snmpget -r 0 -t 60 $nodeName system.3.0 | cut -d: -f3-5`
SSH to both these servers are public-key authenticated, so things run... (13 Replies)
Hi,
I have a directory /home/datasets/ which contains a bunch (720) of subdirectories called hour_1/ hour_2/ etc..etc.. in each of these there is a single text file called (hour_1.txt in hour_1/ , hour_2.txt for hour_2/ etc..etc..) and i would like to do some text processing in them.
Each of... (20 Replies)
Hi
I am tryin to undertand piping
command1|command2
from what i learn output of cammand 2 is an intput for command 1 right?
If so .
What dose next sequence do
cat f1 >> f2 | grep '^'
I think it takes context of f1 and Concatenate's it to f2 and then looks for ....i don't know..... (7 Replies)
I need to find in file where the record starts with "A,U,I,R" and their file name
Record will look like below
A|1|138||XXXX|XX|XX
U|2|XX|XX|XX|XX
R|3|EK|XX|XX|XX
D|4|TY|CC|CC|CC
find ./*.dat -exec egrep "^A|U|I|R" \; -exec cut -d'|' -f1,2 \; -exec sort -u {} /dev/null \;
But... (3 Replies)
Hello,
I'm attempting to open multiple xterms and run a command as an SAP user via sudo using PSSH. So far, I'm able to run PSSH to a file of servers with no check for keys, open every xterm in to the servers in the file list, and SUDO to the SAP(ADM) user, but it won't do anything else... (11 Replies)
can someone please help me fix the below one liner?
what i want to do is run a command, and if that command is successful, pipe the output of the command to another command. i'd prefer not to use any temp files for this.
who -blahblah ; if ; then echo exit; fi | egrep username (2 Replies)
Need help in piping commands using xargs
I have several .tar.gz files that I need to list the folder content in a subdirectory.
For example,
a.tar.gz
b.tar.gz
c.tar.gz
The following command works great for each .tar.gz file but it's a pain to run the tar command for each file.
tar -tf... (11 Replies)
Discussion started by: april
11 Replies
LEARN ABOUT ULTRIX
mu-extract
MU-EXTRACT(1) General Commands Manual MU-EXTRACT(1)NAME
mu_extract - display and save message parts (attachments), and open them with other tools.
SYNOPSIS
mu extract [options] <file> mu extract [options] <file> <pattern>
DESCRIPTION
mu extact is the mu sub-command for extracting MIME-parts (e.g., attachments) from mail messages. It works on message files, and does not
require the message to be indexed in the database.
For attachments, the file name used when saving it, is the name of the attachment in the message. If there is no such name, or when saving
non-attachment MIME-parts, a name is derived from the message-id of the message.
If you specify a pattern (a case-insensitive regular expression) as the second argument, all attachments with filenames matching that pat-
tern will be extracted. The regular expressions are Perl-compatible (as per the PCRE-library).
Without any options, mu extract simply outputs the list of leaf MIME-parts in the message. Only 'leaf' MIME-parts (including RFC822 attach-
ments) are considered, multipart/* etc. are ignored.
OPTIONS -a, --save-attachments
save all MIME-parts that look like attachments.
--save-all
save all non-multipart MIME-parts.
--parts=<parts>
only consider the following numbered parts (comma-separated list).The numbers for the parts can be seen from running mu extract
without any options but only the message file.
--target-dir=<dir>
save the parts in the target directory rather than the current working directory.
--overwrite
overwrite existing files with the same name; by default overwriting is not allowed.
--play Try to 'play' (open) the attachment with the default
application for the particular file type. On MacOS, this uses the open program, on other platforms is uses xdg-open. You can choose
a different program by setting the MU_PLAY_PROGRAM environment variable.
EXAMPLES
To display information about all the MIME-parts in a message file:
$ mu extract msgfile
To extract MIME-part 3 and 4 from this message, overwriting existing files with the same name:
$ mu extract --parts=3,4 --overwrite msgfile
To extract all files ending in '.jpg' (case-insensitive):
$ mu extract msgfile '.*.jpg'
To extract an mp3-file, and play it in the the default mp3-playing application.
$ mu extract --play msgfile 'whoopsididitagain.mp3'
BUGS
Please report bugs if you find them: http://code.google.com/p/mu0/issues/list
AUTHOR
Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
SEE ALSO mu(1)User Manuals February 2012 MU-EXTRACT(1)