Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Need Help to deal with empty string
Top Forums Shell Programming and Scripting Need Help to deal with empty string Post 302267429 by saic on Friday 12th of December 2008 10:02:28 AM
Old 12-12-2008
Hi matrixmadhan,

thanks for giving reply. iam using "Bash"

./srch0.sh
give the path where we can search the file and the string
/
-e Give your inputs here, first filename, followed by the string with a space
./srch0.sh[7]: read: bad option(s)
========================================================================
-e Here is your required output
grep: illegal option -- q
Usage: grep -hblcnsviw pattern file . . .
search string not found
grep: illegal option -- q


And the new code is :



echo "give the path where we can search the file and the string"
read path
echo -e "Give your inputs here, first filename, followed by the string with a space"
read -a file_string
echo "========================================================================"
echo -e "Here is your required output \n"
for i in `find "$path" -name "${file_string[0]}*"`
do
cat $i | grep -q ${file_string[1]}
if [ $? -eq 0 ]
then
echo "search string found"
else
echo "search string not found"
fi
done
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to check for null or empty string

Hi, I need to check for value not equal (<>) to 21 and not equal empty or null values. Please modify this script if then echo "$VALUE,$BSC_NAME,$BSC_ID" > $OUT_FILE/power_up.out end if TQ (5 Replies)
Discussion started by: doer
5 Replies

2. Shell Programming and Scripting

Check for empty string

Hello All, I have written shell script whcih at the max 3 parameters. When only one commandline argument and other two command line arguments are passed as empty string like eg : archive ' ' ' ' Then i need to check whether the commandline... (12 Replies)
Discussion started by: rahman_riyaz
12 Replies

3. Shell Programming and Scripting

Initializing empty string with spaces

Hi, I want to Initialize a String with 50 spaces. I can do that by ex: Var1=" " But i dont want to do in this way? Is there any unix command where i can specify no of spaces to a varaible? like space(50) (1 Reply)
Discussion started by: Shiv_18
1 Replies

4. UNIX for Dummies Questions & Answers

Check to see if string var is empty

i have a veriable set var1 set var2 = abcd how can i check if var 1 is empty and if var 2 is not empty ??? (2 Replies)
Discussion started by: nirnir26
2 Replies

5. Shell Programming and Scripting

Replace empty string on particular column

Hi I would like to replace empty string with a particluar value, any suggessions with awk ? my input file is not delimited with any delimiters input 52001073M8000000004567777 5200107 000000004567778 5200107 000000004567779 52001073M8000000004567789 Expected output... (5 Replies)
Discussion started by: selvankj
5 Replies

6. Shell Programming and Scripting

Perl : how to match non-empty string that has no spaces

Hi Everyone, I am looking for neat way to grep a non-empty string that basically contains a hostname, which might be in FWDN form or without the domain, for example: hostname.internal.domainname.net The file I am parsing contains blan lines (^$) and also series of "-" which in other places... (2 Replies)
Discussion started by: togr
2 Replies

7. Programming

Checking not empty string

I have a string s Are the following equivalent? if ( ! s.empty() ) { } if ( s ) { } (1 Reply)
Discussion started by: kristinu
1 Replies

8. Shell Programming and Scripting

Check if the string is empty

I am reading from a file and executing the jobs with/without parameters as the job requires. File job1 R job2 job3 Y 123 if then <job>.ksh else <job>.ksh $params fi This works fine if the line read from the file has parameters it executes like job1.ksh R But for... (2 Replies)
Discussion started by: nw2unx123
2 Replies

9. Shell Programming and Scripting

How to check empty string in an XML tag?

I have an XML tag <abc> which is empty as <abc></abc>.If the the tag is empty I want to flag the file as bad. Please help. Thanks (3 Replies)
Discussion started by: aneeta13
3 Replies

10. Shell Programming and Scripting

Cant check empty string

Hello So i have that script collection, in which i have a single script to create a configuration file. In there, i have multiple occourences of something like this: prj_title=$(tui-read "What is the TITLE? ($prj_name):") ] && prj_title="${prj_name/_/ }" They all work as expected, if... (5 Replies)
Discussion started by: sea
5 Replies

LEARN ABOUT DEBIAN

liquidsoap

LIQUIDSOAP(1)						      General Commands Manual						     LIQUIDSOAP(1)

NAME

       liquidsoap - a multimedia streaming language

SYNOPSIS

       liquidsoap [options] [script|expression]

DESCRIPTION

       Liquidsoap  is  a  programming  language for describing multimedia streaming systems.  It is very flexible, making simple things simple but
       giving a lot of control for advanced uses.  Liquidsoap supports audio, video and MIDI streams, and a wide range of  input/output  operators
       including  Icecast and various soundcard APIs.  It can perform a broad range of signal processing, combine streams in various ways, support
       custom transitions, generate sound procedurally...  and all this can be assembled as you wish.  Input files can be  accessed  remotely,	or
       even be synthesized on the fly using external scripts such as speech synthesis.	Finally, interaction with a running liquidsoap instance is
       possible via telnet or socket.

       Liquidsoap scripts passed on the command line will be evaluated: they shall be used to define the streaming system to be ran.  It is possi-
       ble  to pass multiple scripts; they will all be ran successively, and definitions from one script can be used in subsequent ones.  A script
       will be read from standard input if - is given as script filename.  Information about scripting liquidsoap is  available  on  our  website:
       http://savonet.sf.net/

       If  the	parameter is not a file it will be treated as an expression which will be executed. It is a convenient way to test simple one-line
       scripts. When running only one-liners, the default is to log messages directly on stdout rather than to a file.

OPTIONS

       -
	       Read script from standard input.

       --     Stop parsing the command-line and pass subsequent items to the script.

       --debug
	      Print debugging log messages.

       --dynamic-plugins-dir path
	      Directory where to look for plugins.

       --errors-as-warnings
	      Issue warnings instead of fatal errors for unused variables and ignored expressions. If you are not sure about it, it is	better	to
	      not use it.

       --interactive
	      Start an interactive interpreter.

       --list-plugins
	      List all plugins (builtin scripting values, supported formats and protocols).

       --list-plugins-xml
	      List all plugins (builtin scripting values, supported formats and protocols), output as XML.

       --no-pervasives
	      Do not load pervasive script libraries.

       --version
	      Display liquidsoap's version.

       -c, --check
	      Check and evaluate scripts but do not perform any streaming.

       -cl, --check-lib
	      Like --check but treats all scripts and expressions as libraries, so that unused toplevel variables are not reported.

       -d, --daemon
	      Run in daemon mode.

       -f, --force-start
	      For advanced dynamic uses: force liquidsoap to start even when no active source is initially defined.

       -h plugin
	      Print the description of a plugin, eg. a builtin scripting function.

       -i     Display infered types.

       -p, --parse-only
	      Parse scripts but do not type-check and run them.

       -q, --quiet
	      Do not print log messages on standard output.

       -r filename
	      Process a request.

       -T, --disable-telnet
	      Disable the telnet server.

       -U, --disable-unix-socket
	      Disable the unix socket.

       -t, --enable-telnet
	      Enable the telnet server.

       -u, --enable-unix-socket
	      Enable the unix socket.

       -v, --verbose
	      Print log messages on standard output.

       --conf-descr-key key
	      Describe a configuration key.

       --conf-descr
	      Show all configuration keys with their documentation.

       --conf-descr-liqi
	      Show all configuration keys with their documentation in liqi (documentation wiki) format.

       --conf-dump
	      Dump the configuration state

       -help, --help
	      Display this list of options

SEE ALSO

       Our website http://savonet.sf.net/ and the HTML documentation coming with your distribution of liquidsoap.

AUTHOR

       Savonet team <savonet-users@lists.sourceforge.net>

Liquidsoap 1.0.1						   June 25, 2012						     LIQUIDSOAP(1)
All times are GMT -4. The time now is 04:42 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy