Hi, I am trying to write a ftp script which will read a file for filenames and ftp those files to another server. Here's my ftp script, but it's scanning the current directory for file names.
My question is how can I pass multiple files (these files will have the name of data files that need to... (0 Replies)
Hi All,
I wish to automate the unix command 'su' through a shell script.
I would like to pass the content of a file as password to 'su' command.
My script is as below,
#! /bin/sh
su userA
while read line
do
rpm -ivh $line
done < pwd.txt
where pwd.txt contains the password of... (6 Replies)
Hiii
I wanna a read a line of text from standard input. The user enter data like this way
name phone_no month1_salary month2_salary
that is user enter the name ,phone no and salary of 2 months in a single line by giving spaces. I wanna add the 3rd and 4th fields ...ie add both... (4 Replies)
I have two files.
Fileone contains
text string one
text string two
text string three
Filetwo contains
Name:
Address:
Summary:
Name:
Address:
Summary:
Name:
Address:
Summary:
I would like to use sed to read each line of file one and put it at the end of the summary line of file... (3 Replies)
I need help understanding a script I'm modifying which someone else has written. Basically I’m looping through a buffer that holds records fetched from a database query. I need a way to separate the primary key values from other attributes in the result. Heres the code:
BUFF=buffer_file
>... (5 Replies)
Hi everyone, i have made a very simple script where it reads the user input and converts the number from celcius to faranheit but instead of running the command and prompting the user for input I want to be able to simply enter a number at the end of the command to run the script.
ex. instead of... (1 Reply)
Hi All,
Do we know how to read input file within awk script and send output toanother log file. All this needs to be in awk script, not in command line. I am running this awk through crontab.
Cat my.awk
#!/bin/awk -f
function test(var){
some code}
{
}
END
{
print"test code"
} (5 Replies)
Hi,
I want to write a small code in which script changes command line input to some form.
Example
script.sh a1 a2 a3 a4 .....
output should be "a1|a2|a3|....."
Number of inputs in command line can be any variable (2 Replies)
Hello,
I want to use the read command in order to input a keyword from the keyboard.
I then want to use this keyword in a grep command.
How to I input a phrase as a keyword? For example if I use
read keyword
"today is"
and then use grep, I get "No such file or directory" error. (6 Replies)
Discussion started by: FelipeAd
6 Replies
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)