Originally I was going to use NR==1 to match the first line but RudiC's approach using exit should be much more efficient when the input file has a large number of lines.
Replace %d format specifiers with %f, %.2f, etc if you have non-integer values.
This User Gave Thanks to Chubler_XL For This Post:
Hi All,
I am checking for a empty input file to do some further action , but I am getting exit status 0 in both the cases , for empty and non empty file both.
The value of $? is coming 0 in if part also and else part too.
#!/bin/ksh
if ]; then
echo "data"
# exit 0
echo "$?"
else... (4 Replies)
Hi,
I created the following shell script to lookup multiple name servers for a domain.
#!/bin/bash
echo -n "Enter the domain name and press : "
read domain
result1=`dig +short $domain @4.2.2.1`
revresult1=`host $result1 | cut -f5 -d " "`
echo "test1"
result2=`dig +short... (3 Replies)
So, I will be working with someone and basically we are trying to build a form that is submitted most likely via the web and the data is just a string of numbers.
like:
19383882872201110929282821818182827349190102837364718191001932873711
Now, each number is part of a numerical value of... (4 Replies)
I have a local linux machine in which the files are dumped by a remote ubuntu server. If the process in remote server has any problem then empty files are created in local machine. Is there any way using perl script to check if the empty files are being created and delete them and then run a shell... (2 Replies)
I'm trying to write a shell script to files of zero length in a specified directory, but I keep getting errors. Would anybody be kind enough to look it over for issues? Thanks a bunch in advance.
#!/bin/sh
if
then
if
then
find $1 -type f -size 0 -print|xargs rm
exit 0... (1 Reply)
I have a script that runs ditto for me, and occasionally (if I exit the script while ditto is running in the background) it will leave an empty file named 0 in the script's directory. The next time I run the script, it generates incorrect data because of this file. I know I can easily insert a... (1 Reply)
I have a script that runs ditto for me, and occasionally (if I exit the script while ditto is running in the background) it will leave an empty file named 0 in the script's directory. The next time I run the script, it generates incorrect data because of this file. I know I can easily insert a... (1 Reply)
Hi,
I am unable to get $HOSTNAME value in a remote script when executed through SSH. Also the scripts hangs and doesnt return to the calling environment.
For instance
command -
ssh user1@box2 "cd /var/home/bin ; ./generateScript.sh"
Can any one plese throw light on the issue and... (5 Replies)
Hi All,
Can anyone please write a shell script to remove the empty files using an if condition.
please help me out , urgent
thanks (6 Replies)
Discussion started by: muthi_murali
6 Replies
LEARN ABOUT DEBIAN
shtool-echo
SHTOOL-ECHO.TMP(1) GNU Portable Shell Tool SHTOOL-ECHO.TMP(1)NAME
shtool-echo - GNU shtool echo(1) extensional command
SYNOPSIS
shtool echo [-n|--newline] [-e|--expand] string
DESCRIPTION
shtool echo is an echo(1) style command which prints string to stdout and optionally provides special expansion constructs (terminal bold
mode, environment details, date, etc) and newline control. The trick of this command is that it provides a portable -n option and hides the
gory details needed to find out the environment details under option -e.
OPTIONS
The following command line options are available.
-n, --newline
By default, output is written to stdout followed by a "newline" (ASCII character 0x0a). If option -n is used, this newline character is
omitted.
-e, --expand
If option -e is used, string can contain special "%x" constructs which are expanded before the output is written. Currently the
following constructs are recognized:
%B switch terminal mode to bold display mode.
%b switch terminal mode back to normal display mode.
%u the current user name.
%U the current user id (numerical).
%g the current group name.
%G the current group id (numerical).
%h the current hostname (without any domain extension).
%d the current domain name.
%D the current day of the month.
%M the current month (numerical).
%m the current month name.
%Y the current year.
EXAMPLE
# shell script
shtool echo -n -e "Enter your name [%B%u%b]: "; read name
shtool echo -e "Your Email address might be %u@%h%d"
shtool echo -e "The current date is %D-%m-%Y"
HISTORY
The GNU shtool echo command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 1998 for Website META Language (WML)
under the name buildinfo. It was later taken over into GNU shtool.
SEE ALSO shtool(1), echo(1).
18-Jul-2008 shtool 2.0.8 SHTOOL-ECHO.TMP(1)