01-30-2008
The answer provided by Tytalus fits your needs.
Quote:
echo "ABC" | tee a | tee b > c
The STDOUT is piped, and then in the last command it is redirected. There is no step in this command string that will print to the screen.
Please test solutions before dismissing them
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
The following find command works on the Korn Shell command line:
find . \( ! -name . -prune \) -type f -name "*.txt" -mtime +100
In the particular directory I'm in, the above find will list correctly the three text files that exist that haven't been modified in over 100 days:
... (3 Replies)
Discussion started by: jwperry
3 Replies
2. Shell Programming and Scripting
Hi all,
Iam trying to sort the contents of the file based on the position of the file.
Example:
$cat sample.txt
0101020060731 ## Header record
1c1 Berger Awc ANP20070201301 4000.50
1c2 Bose W G ANP20070201609 6000.70
1c2 Andy CK ANP20070201230 28000.00... (3 Replies)
Discussion started by: ganapati
3 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I have a .txt file
Sample:
=====================
NEXT HOST
=====================
AEADBAS001
ip access-list extended BLA_Incoming_Filter
ip access-list extended BLA_Outgoing_Filter
access-list 1 permit xxxxxxxxxxxxxx
access-list 2 permit xxxxxxxxxxxxxx
=====================... (4 Replies)
Discussion started by: I-1
4 Replies
4. Shell Programming and Scripting
Hi,
I am trying to check the file not empty, if its not empty then i try to send other system by ftp, the following codes doesnt work
if ]
then
echo "File ${OUTBOUNDFILE} have data"
ftp -i -n -v 204.104.22.33 >> ${FTP_LOGFILE} << EOF
user abc def
ascii
put ${OUTBOUNDFILE}
quit
EOF... (1 Reply)
Discussion started by: Imran_Chennai
1 Replies
5. Shell Programming and Scripting
Hi,
I'am using "time" to check execution time of some script. Is there any possibility to save time command result into a file ? (2 Replies)
Discussion started by: Physix
2 Replies
6. Homework & Coursework Questions
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 looks for all text files in your home directory (including subdirectories).
List... (3 Replies)
Discussion started by: rollinator
3 Replies
7. UNIX for Dummies Questions & Answers
I have a diff command that does what I want but when comparing large text/log files, it uses up all the memory I have (sometimes over 8gig of memory)
diff file1.txt file2.txt | grep '^<'| awk '{$1="";print $0}' | sed 's/^ *//'
Is there a better more efficient way to find the lines in one file... (5 Replies)
Discussion started by: raptor25
5 Replies
8. Shell Programming and Scripting
Hi all.
I have a .txt file that I need to sort it
My file is like:
1- 88 chain0 MASTER (FF-TE) FFFF 1962510 /TCK T FD2TQHVTT1 /jtagc/jtag_instreg/updateinstr_reg_1 dff1 (TI,SO)
2- ... (10 Replies)
Discussion started by: Behrouzx77
10 Replies
9. Shell Programming and Scripting
Hi,
I`m a total newbie, well my requirement is that i have 2 files
I want to identify which countries i do not currently have in db..
how can i use the grep or another command to find this file ..
i want to match all-countries.txt with countries-in-db.txt so the output is equal to... (11 Replies)
Discussion started by: beanbaby
11 Replies
10. Programming
Hello everyone,
Since my python knowledge is limimted, I've challenged myself to learn as much as possible to help me with my carrere. I'm currently trying to convert a shell script to python, just to give myself a task. There is one section of the script that I'm having issues converting and... (2 Replies)
Discussion started by: da1
2 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)