HI
In my script, i am reading the input from the user and want to find the length of the string.
The input may contain leading spaces. Right now, when leading spaces are there, they are not counted.
Kindly help me
My script is like below. I am using the ksh.
#!/usr/bin/ksh
echo... (2 Replies)
Hi
I have an XML file with strings XABCD, XEFGHX and XIJKLX. I would like to replace XABCDX with "This is the first string", XEFGHX with "This is the second string" and XIJKLX with "This is the third string".
What is the best way to implement this? Should I have a file with the data that is... (4 Replies)
How do i split a variable of numbers with spaces... for example
echo "100 100 100 100" > temp.txt
as the values can always change in temp.txt, i think it will be feasible to split the numbers in accordance to column.
How is it possible to make it into $a $b $c $d? (3 Replies)
Hi,
i call my shell like:
my_shell "my project name"
my script:
#!/bin/bash -vx
projectname=$1
sed s/'PROJECT_NAME ='/'PROJECT_NAME = '$projectname/ <test_config_doxy >temp
cp temp test_config_doxy
the following error occurres:
sed s/'PROJECT_NAME ... (2 Replies)
which one of the following is the correct expression to ignore line with multiple spaces after any string
cat file | grep -v "xyz *$"
or
cat file | grep -v "xyz*$"
do i need "*" to specify the sapce or " *" will do? (2 Replies)
Here is a weird question :)
i am trying to create a script written in bash that will create configuration files for nagios. As some of you aware is has to be written in the below format:
define service{
option1 value1
option2 value2... (6 Replies)
i'm looking for a command that allows me to print a specific number of spaces which i will provide.
something as simple as:
spaces=4
printf " " * $spaces
i'm looking for somethign that'll allow me to print a specific amount of spaces on a line.
can awk be used for this? (4 Replies)
when given a file name, im looking for the most efficient way to turn each letter of the file name into spaces.
for instance, the way im thinking of going about this is this:
MYFILE=check_disks.sh
CHANUM=$(echo ${MYFILE} | awk '{ print length }')
printf '%s\n' $CHANUM
as you can see... (4 Replies)
I would like to find an undetermined number of spaces and shorten them to one space. I am running Debian in mksh. Script running in #!/bin/sh. Sorry to not include all code. The program is too big and involves an online file... too much hassle to solve a simple issue.
Ex.,
I start with... (11 Replies)
My string variable which gets the output from the result of a database query has values as below:
line="2019-09-11 15:17:55 CR1234 anonymous Deployed DR_only Back_APP"
I wish to construct an array (my_array) which should have entries as below.
Note:
1. The first... (6 Replies)
Discussion started by: mohtashims
6 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)