11-01-2013
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scott_cog
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10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hello,
i have a listing (let say ABC) consists of the below:
:
public database link
public synonym
role
rollback segment
:
when i run the below for loop,
for i in `more ABC`
do
echo "$i"
done
it gives me,
:
public
database (4 Replies)
Discussion started by: newbie168
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2. Shell Programming and Scripting
I have script like
echo -n FINISHED FEXP: ${TABLE2EXP}
echo $STATUS
I want the output of both the echo statement in one line
How can i do this (3 Replies)
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3. UNIX for Advanced & Expert Users
hi
I want to display:
The students are:
a
b
c
What I get from
echo "The students are:" "$list"
is
The students are: a
b
c
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4. Shell Programming and Scripting
Hi
i would like disply the new line in echo command.
i have input like:
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out put:
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5. Shell Programming and Scripting
Hi
I want to display "echo command value in loop" in single line. My requirement is to show the input file (test_1.txt) like the output file (test_2.txt) given below.
Input file :test_1.txt
a1|b1|4|5
a1|b1|42|9
a2|b2|32|25
a1|b1|2|5
a3|b3|4|8
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Output file:test_2.txt... (2 Replies)
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6. Shell Programming and Scripting
Hello,
I'm writing some bash scripts and I'm trying to get an echo command and the output of another command to display on the same line. For example:
I want to run
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Operating System: Darwin
Thanks for your help! (7 Replies)
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7. Shell Programming and Scripting
Hi,
I try to write script and echo two command at the same line .
echo "A"
echo "B"
How can I pipe above two command at the same line in text file .
So, in the output text file , you can see below ???
A B
not
A
B
Any sugggestion ??? (4 Replies)
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Hello,
I have a very basic script
#!/usr/bin/ksh
while
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print ' 1. View Command History '
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read opt'?Enter Option> ' ;do
if ;then
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#
if ;then
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Hello,
I have written a command n shell script :
srvctl relocate service -d t1 -s s1 -i i1 -t t1 -f
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10. Shell Programming and Scripting
Dear All,
fileName: therm.txt
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1.47017550e+01 1.71731699e-02-5.91205329e-06 9.21842570e-10-5.36438880e-14 2
-2.99988556e+04-4.93387892e+01 2.34710908e+00 4.34517484e-02-2.65357553e-05 3
... (7 Replies)
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LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
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 v5.16.3 2010-06-11 SHELL-QUOTE(1)