Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Bash shell expansion help
Top Forums Shell Programming and Scripting Bash shell expansion help Post 302955505 by Don Cragun on Thursday 17th of September 2015 10:49:50 PM
Old 09-17-2015
The
Code:
for  filename in /shell_expansion/*.txt

is looking for files with names ending with .txt in the directory /shell_expansion/; not for files ending with that string in the current directory.

If you're looking for files in a subdirectory of your current working directory, maybe you wanted something more like:
Code:
for  filename in ./shell_expansion/*.txt

(note the added leading period) or just remove the leading slash from the pathname:
Code:
for  filename in shell_expansion/*.txt

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

bash - delay expansion of variable

Hello - I have a bash script which does some logging, and I'd like to include the line number of the echo statement that pipes into $LOGGER: MYPID=$$ MYNAME=`basename $0` LOGGER="/usr/bin/logger -t $MYNAME($LINENO) -p daemon.error" ... echo 'this is an entry into the log file' | $LOGGER ... (3 Replies)
Discussion started by: scandora
3 Replies

2. Shell Programming and Scripting

Brace expansion problem in Bash

I have a script that takes an option for server pools to run the script against. The option is given as a comma separated list (ie, -p 201,204,301). I'm using eval and brace expansion to get those pool numbers into an array. It works fine unless only 1 pool number is given. Here's the code: ... (5 Replies)
Discussion started by: mglenney
5 Replies

3. Shell Programming and Scripting

Bash variable delayed expansion?

i write a batch file , here is the content. dirname='date +%Y-%m-%d' mkdir dirname but it doen's work, it just create a folder named date and +%Y-%m-%d. i have tried run the command seperately in the bash prompt. after the first sentence executed , i use $dirname to watch the value of... (4 Replies)
Discussion started by: premotheus
4 Replies

4. Shell Programming and Scripting

Does SH support indirect expansion like BASH?

Hello, is there a kind soul who can answer me, does the SH support double substitution known as indirect expansion similar to BASH? The syntax for bash is ${!var}. For instance in bash I can write something like this: VAR="value" REF_VAR="VAR" echo ${!REF_VAR} and get the "value"... (1 Reply)
Discussion started by: dimentiy
1 Replies

5. Shell Programming and Scripting

Bash expansion

Hello. I cannot write a command without using eval. Any help is welcome Note 1 : What does the function SOMETHING has no importance. Note 2 : What does the command find has no importance. It is an expansion variable problem : where to put or or or anythings else What works (FILTRE_1... (8 Replies)
Discussion started by: jcdole
8 Replies

6. Shell Programming and Scripting

Bash variable expansion

Hello. The file /etc/fstab contains UUID=957c3295-9944-1593-82e2-2b90dede4312 / ext4 noatime,discard,acl,user_xattr 1 1 I fill a variable SOME_LINE=$( cat /etc/fstab | grep \/\..*ext4 | grep noatime,discard )echo $SOME_LINE... (3 Replies)
Discussion started by: jcdole
3 Replies

7. Shell Programming and Scripting

Bash Parameter Expansion

I have made the following examples that print various parameter expansions text: iv-hhz-sac/hpac/hhz.d/iv.hpac..hhz.d.2016.250.070018.sac (text%.*): iv-hhz-sac/hpac/hhz.d/iv.hpac..hhz.d.2016.250.070018 (text%%.*): iv-hhz-sac/hpac/hhz (text#*.): d/iv.hpac..hhz.d.2016.250.070018.sac... (2 Replies)
Discussion started by: kristinu
2 Replies

8. Shell Programming and Scripting

Bash Parameter Expansion

#!/bin/bash SNMPW='/usr/bin/snmpwalk' while read h i do loc=$($SNMPW -v3 -u 'Myusername' -l authPriv -a SHA -A 'Password1' -x AES -X 'Password2' $i sysLocation.0 2>/dev/null) loc=${loc:-" is not snmpable."} loc=${loc##*: } loc=${loc//,/} echo "$i,$h,$loc" done < $1 My question is ... ... (1 Reply)
Discussion started by: sumguy
1 Replies

9. Shell Programming and Scripting

Bash : More parameter expansion and IFS

I am trying to become more fluent with the interworking of bash and minimize the number of external calls. Sample Data. This will be the response of the snmp query. SNMPv2-MIB::sysName.0 = STRING: SomeHostName SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.9.1.1745... (5 Replies)
Discussion started by: sumguy
5 Replies

10. Shell Programming and Scripting

Use parameter expansion over a parameter expansion in bash.

Hello All, Could you please do help me here as I would like to perform parameter expansion in shell over a parameter expansion. Let's say I have following variable. path="/var/talend/nat/cdc" Now to get only nat I could do following. path1="${path%/*}" path1="${path1##*/}" Here... (8 Replies)
Discussion started by: RavinderSingh13
8 Replies

LEARN ABOUT OSX

locale::codes::langvar

Locale::Codes::LangVar(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangVar(3pm)

NAME

       Locale::Codes::LangVar - standard codes for language variation identification

SYNOPSIS

	  use Locale::Codes::LangVar;

	  $lvar = code2langvar('acm');		       # $lvar gets 'Mesopotamian Arabic'
	  $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langvar_codes();
	  @names   = all_langvar_names();

DESCRIPTION

       The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language variations. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lvar = code2langvar('en','alpha-2');
	  $lvar = code2langvar('en',LOCALE_CODE_ALPHA_2);

       The codesets currently supported are:

       alpha
	   This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian.

	   This code set is identified with the symbol "LOCALE_LANGVAR_ALPHA".

	   This is the default code set.

ROUTINES

       code2langvar ( CODE [,CODESET] )
       langvar2code ( NAME [,CODESET] )
       langvar_code2code ( CODE ,CODESET ,CODESET2 )
       all_langvar_codes ( [CODESET] )
       all_langvar_names ( [CODESET] )
       Locale::Codes::LangVar::rename_langvar  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangVar::add_langvar  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangVar::delete_langvar  ( CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangVar::delete_langvar_alias  ( NAME )
       Locale::Codes::LangVar::rename_langvar_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::delete_langvar_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2012 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.2							    2012-10-11					       Locale::Codes::LangVar(3pm)
All times are GMT -4. The time now is 07:41 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy