Hi,
I have given the following statement in a script to put the values of variables (VAR1, VAR2,...) in a file.
echo " $VAR1 $VAR2 $VAR3 $VAR4 $VAR5" >> filename
But the output is not coming properly. Variables VAR5, VAR4 are replacing the first (VAR1, VAR2,..). I can't... (5 Replies)
echo "XXXXX" >> /xx/output.txt
cat /xx/file.txt| awk '{tony=tony+$1+$2; print tony/$3*100}' >> /xx/output.txt
Dear all,
In this situation i will have 2 lines in the output file. What i want is to have only one output line. e.g: XXXXX "value"
HOW to put the output of the "cat and awk" in... (1 Reply)
Hi,
I would like to output the identical line to 2 text files, ie
output='blah'
echo $output > test1.txt
echo $output > test2.txt
Is there a way I could do that output with ONE command, ie
output='blah'
echo $output > test1.txt & test2.txt (I know that doesn't work)
Thanks for any... (1 Reply)
Hi
I am using tcsh.
I want display in a file_1 like this.
$VARIBALE
I gave in a termianl
> echo "\$VARIBALE" > file_1
Its not workning.
It was giving VARIBALE: Undefined variable.
I gave \ before $, but why it was giving undefined varible?
Please help me.
Thanks in advance (4 Replies)
Hello all,
Please help with the below.
I have a requirement where in I have to read a pattern and print it as shown below.
Patterns will be as below.
Input Output
Pattern Should be printed as below with spaces such that I can awk.
-*--* - * - - *
*--**... (2 Replies)
hi all
i have little problem below is my shell script
a=`sqlplus fss_cst/fss_cst@dolp1 << EOF
SET PAGESIZE 0 FEEDBACK OFF TRIMOUT ON;
select process from lfs$ta_process where valid_to_dat=to_date('9/16/2010','mm/dd/yyyy');
EOF`
echo ${SQL}
the script name is test2.sh
when i execute... (5 Replies)
Hello, I have a simple(I think) question!
Although simple, I have been unable to resolve it, so I hope someone can help! OK, here it is:
1)I have an awk script that prints something, such as:
awk '{print $2}' a > x
so x might hold the value of say '10'
2)Now, I just want to check to see if... (4 Replies)
Apologies, probably a really simple problem:
I've got a text file (nh.txt) with this in it:
user1 email1 email2
user2 email1 email2
etc
With the following basic script:
for tline in $(cat nh.txt)
do
echo "**********"
echo $tline
done
... (3 Replies)
Hi
I want to use echo command as below
echo 'dir=' $1 ' dir|file|home'
i need output like below :
echo 'dir=' $1 ' dir|file|home' pp13dff
Output
dir=pp13dff dir|file|home (4 Replies)
Discussion started by: asavaliya
4 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)