05-01-2009
The ksh93 has a substring function you could use, but AIX 4.2 uses a ksh88 as the default shell and it is probably more robust to rely on that.
In this case you could use the variable expansion feature of the ksh to extract the strings:
${var%%???} gives everything except the last 3 characters of variable $var
${var##???} gives everything except the first 3 characters of variable $var
etc.
It is possible to nest these expressions to get a substring-like functionality. Have a look in a ksh book to find out more about variable expansion.
I hope this helps.
bakunin
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I want to remove empty/blank lines from comma seperated and space seperated files
Thanks all for help (11 Replies)
Discussion started by: pinnacle
11 Replies
2. Web Development
Hi
I have a webpage where I have a dropdown box and depending on the selection I would like to populate a text field .
Preferably with JavaScript (2 Replies)
Discussion started by: bombcan
2 Replies
3. Shell Programming and Scripting
Hi, all
I need to get fields in a line that are separated by commas, some of the fields are enclosed with double quotes, and they are supposed to be treated as a single field even if there are commas inside the quotes.
sample input:
for this line, 5 fields are supposed to be extracted, they... (8 Replies)
Discussion started by: kevintse
8 Replies
4. Shell Programming and Scripting
Hi,
I have data like this.
1,2,3,4
Output required:
1
2
3
4
I am trying to use tr function but getting error.
Help is appreciated. (6 Replies)
Discussion started by: pinnacle
6 Replies
5. Shell Programming and Scripting
Hello, I am using awk to match text in a tab separated field and am able to do so when matching the exact word. My problem is that I would like to match any sequence of text in the tab-separated field without having to match it all. Any help will be appreciated. Please see the code below.
awk... (3 Replies)
Discussion started by: rocket_dog
3 Replies
6. UNIX for Dummies Questions & Answers
Using awk or sed, I'd like to remove leading spaces after a comma and before a right justified number in field 6. Sounds simple but I can't find a solution. Each field's formatting must stay intact.
Input:
40,123456-02,160,05/24/2012,02/13/1977, 10699.15,0
Output:... (5 Replies)
Discussion started by: Scottie1954
5 Replies
7. Shell Programming and Scripting
Hi,
I have a file which looks like this:
A 01 00
B 02 00
C 04 00
D 00 01
E 01 01
F 02 01
G 01 04
H 02 04
I want to insert some text if the field if the last column changes. It should look like this:
Value 00
A 01 00
B 02 00
C 04 00
Value 01 (6 Replies)
Discussion started by: wenclu
6 Replies
8. Shell Programming and Scripting
Hi,
I have a huge file that has data something like shown below:
huge_file.txt
start regexp
Name=Name1
Title=Analyst
Address=Address1
Department=Finance
end regexp
some text
some text
start regexp
Name=Name2
Title=Controller
Address=Address2
Department=Finance
end regexp (7 Replies)
Discussion started by: r3d3
7 Replies
9. Shell Programming and Scripting
I am trying to parse the input in awk to include the |gc= in $4 but am not able to. The below is close:
awk so far:
awk '{sub(/\|]+]++/, ""); print }' input.txt Input
chr1 955543 955763 AGRN-6|pr=2|gc=75 0 +
chr1 957571 957852 AGRN-7|pr=3|gc=61.2 0 +
chr1 970621 ... (7 Replies)
Discussion started by: cmccabe
7 Replies
10. Shell Programming and Scripting
Hi Experts
I have an escape seperated fields in the unix file. And in the below format file I need to extract the first column. Please help its urgent.
cat -v op.dat | head
24397028^
I want to extract the file in below format ( with only first column )
24397028
2439707
thanks.
... (6 Replies)
Discussion started by: neha_suri06
6 Replies
LEARN ABOUT REDHAT
tclx_keyedlistdelete
Tcl_GetKeyedListKeys(3tclx) Tcl_GetKeyedListKeys(3tclx)
NAME
TclX_NewKeyedListObj, TclX_KeyedListGet, TclX_KeyedListSet, TclX_KeyedListDelete, TclX_KeyedListGetKeys - Keyed list management routines.
SYNOPSIS
#include <tclExtend.h>
Tcl_Obj *
TclX_NewKeyedListObj (void);
int
TclX_KeyedListGet (Tcl_Interp *interp,
Tcl_Obj *keylPtr,
char *key,
Tcl_Obj **valuePtrPtr);
int
TclX_KeyedListSet (Tcl_Interp *interp,
Tcl_Obj *keylPtr,
char *key,
Tcl_Obj *valuePtr);
int
TclX_KeyedListDelete (Tcl_Interp *interp,
Tcl_Obj *keylPtr,
char *key);
int
TclX_KeyedListGetKeys (Tcl_Interp *interp,
Tcl_Obj *keylPtr,
char *key,
Tcl_Obj **listObjPtrPtr);
DESCRIPTION
These routines perform operations on keyed lists. See the Extended Tcl man page for a description of keyed lists.
TclX_NewKeyedListObj
Create and initialize a new keyed list object.
Returns:
A pointer to the object.
TclX_KeyedListGet
Retrieve a key value from a keyed list.
Parameters:
o interp - Error message will be return in result if there is an error.
o keylPtr - Keyed list object to get key from.
o key - The name of the key to extract. Will recusively process sub-keys seperated by `.'.
o valueObjPtrPtr - If the key is found, a pointer to the key object
is returned here. NULL is returned if the key is not present.
Returns:
o TCL_OK - If the key value was returned.
o TCL_BREAK - If the key was not found.
o TCL_ERROR - If an error occured.
TclX_KeyedListSet
Set a key value in keyed list object.
Parameters:
o interp - Error message will be return in result object.
o keylPtr - Keyed list object to update.
o key - The name of the key to extract. Will recusively process sub-key seperated by `.'.
o valueObjPtr - The value to set for the key.
Returns:
TCL_OK or TCL_ERROR.
TclX_KeyedListDelete
Delete a key value from keyed list.
Parameters:
o interp - Error message will be return in result if there is an error.
o keylPtr - Keyed list object to update.
o key - The name of the key to extract. Will recusively process sub-key seperated by `.'.
Returns:
o TCL_OK - If the key was deleted.
o TCL_BREAK - If the key was not found.
o TCL_ERROR - If an error occured.
TclX_KeyedListGetKeys
Retrieve a list of keyed list keys.
Parameters:
o interp - Error message will be return in result if there is an error.
o keylPtr - Keyed list object to get key from.
o key - The name of the key to get the sub keys for. NULL or empty to retrieve all top level keys.
o listObjPtrPtr - List object is returned here with key as values.
Returns:
o TCL_OK - If the zero or more key where returned.
o TCL_BREAK - If the key was not found.
o TCL_ERROR - If an error occured.
Tcl Tcl_GetKeyedListKeys(3tclx)