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Top Forums Shell Programming and Scripting extracting substring from a file name Post 302272321 by KenJackson on Tuesday 30th of December 2008 09:05:23 AM
Old 12-30-2008
Try this:
Code:
#!/bin/sh
F=abc.txt
F1="${F%.*}_1.${F##*.}"
echo "F1=$F1"

The "%.*" (percent period asterisk) strips off exactly one period and the remaining characters from the end.
The "##*." (pound pound asterisk period) strips off all characters up to the last period plus the period from the front.
 

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XrmUniqueQuark(3X11)						     MIT X11R4						      XrmUniqueQuark(3X11)

Name
       XrmUniqueQuark, XrmStringToQuark, XrmQuarkToString, XrmStringToQuarkList, XrmStringToBindingQuarkList - manipulate resource quarks

Syntax
       XrmQuark XrmUniqueQuark()

       #define XrmStringToName(string) XrmStringToQuark(string) #define XrmStringToClass(string) XrmStringToQuark(string) #define XrmStringToRep-
       resentation(string) XrmStringToQuark(string)

       XrmQuark XrmStringToQuark(string)
	  char *string;

       #define XrmNameToString(name) XrmQuarkToString(name) #define XrmClassToString(class) XrmQuarkToString(class) #define XrmRepresentation-
       ToString(type) XrmQuarkToString(type)

       char *XrmQuarkToString(quark)
	  XrmQuark quark;

       #define XrmStringToNameList(str, name) XrmStringToQuarkList((str), (name)) #define XrmStringToClassList(str,class) XrmStringToQuark-
       List((str), (class))

       void XrmStringToQuarkList(string, quarks_return)
	  char *string;
	  XrmQuarkList quarks_return;

       XrmStringToBindingQuarkList(string, bindings_return, quarks_return)
	  char *string;
	  XrmBindingList bindings_return;
	  XrmQuarkList quarks_return;

Arguments
       bindings_return
		 Returns the binding list.

       quark	 Specifies the quark for which the equivalent string is desired.

       quarks_return
		 Returns the list of quarks.

       string	 Specifies the string for which a quark is to be allocated.

Description
       The function allocates a quark that is guaranteed not to represent any string that is known to the resource manager.

       These functions can be used to convert to and from quark representations.  The string pointed to by the return value must not be modified
       or freed.  If no string exists for that quark, returns NULL.

       The function converts the specified resource quark representation back to a string.

       The function converts the null-terminated string (generally a fully qualified name) to a list of quarks.  Note that the string must be in
       the valid ResourceName format.  The components of the string are separated by a period or asterisk character.

       A binding list is a list of type and indicates if components of name or class lists are bound tightly or loosely (that is, if wildcarding
       of intermediate components is specified).

       typedef enum {XrmBindTightly, XrmBindLoosely} XrmBinding,
	    *XrmBindingList;

       indicates that a period separates the components, and indicates that an asterisk separates the components.

       The function converts the specified string to a binding list and a quark list.  Component names in the list are separated by a period or an
       asterisk character.  If the string does not start with period or asterisk, a period is assumed.	For example, ``*a.b*c'' becomes:

       quarks a       b      c
       bindings       loose  tightloose

See Also
       XrmGetResource(3X11), XrmInitialize(3X11), XrmMergeDatabases(3X11), XrmPutResource(3X11)
       X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys

															      XrmUniqueQuark(3X11)
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