Your read command is backwards -
IFS sets the record separator for a read, by default it is space(s). This means the first text block gets put in a, second in b, third in the c variable.
You can also create arrays like that:
bash uses declare -a arrayname value1 value2 ... valuen
plus you can assign values directly to each element of an array.
This User Gave Thanks to jim mcnamara For This Post:
Actually I want to display the entire output fired by ps command. My output gets trucated after 80 chars.
Thus, i am not able to see the entire command running when i give a ps -eaf ....
Does anyone know how do i display the entire output fired by ps command .. (i.e the command along with... (5 Replies)
I know there are caveats about using read in pipelines because read is treated by a subshell. I know this but I can't think of any way to accomplish this regardless, I'm still a rookie.
I hope somebody will be able to interpret what it is that I'm trying to accomplish and correct me.
... (2 Replies)
Hello All,
I have a an application written in C and runing on Red Hat Linux.
In my code I have written a command that is fired on the linux shell by using system() function call.
Now I need to read the output of this command in my c program and assign it to a variable.
Can anyone... (1 Reply)
I know this script is crummy, but I was just messing around.. how do I get sed's insert command to allow variable expansion to show the filename?
#!/bin/bash
filename=`echo $0`
/usr/bin/sed '/#include/ {
i\
the filename is `$filename`
}' $1
exit 0 (8 Replies)
Hi All,
How I will read the output of the tail -F command in perl.
I have text file with below contains
file1.txt
1
2
3
4
$running=1;
sub openLog($)
{
(my $log) = @_; (1 Reply)
Hi. I'm trying to write a script that reads a line on a file and runs a different command for a different line output.
For example, if it finds the word "Kuku" on the line it sends mail to Kuku@kuku.com. Otherwise, it sends mail to Lulu@lulu.com.
TIA. (2 Replies)
I'm working on a short BASH script on my Ubuntu box that will run powerpoint scripts with MS Powerpoint Viewer 2007 via WINE.
I can run the presentation when I run it manually but what i'd like to do is have the script look for the newest file then run it.
#! /bin/sh
# Start the newest... (2 Replies)
Okay, so I have a file containing line after line of three digit numbers. I need a script that does an action based on the last two numbers in this list.
So.... To get the last two numbers, I can have the script do
tail -2 filename.txt
But where I run into trouble is as follows. If... (6 Replies)
Hi!
I have run the following command: snoop -q -d e1000g0 -o /var/tmp/optima0.txt & them I am trying to read the output of it with snoop -i /var/tmp/optima0.txt, which is giving me this: # snoop -i /var/tmp/optima0.txt | more
1 0.00000 AIOPTSVR -> 10.100.4.72 TCP D=1393 S=22 Push... (8 Replies)
Hi Folks,
I'm currently trying to read several values into different variables.
Actually, what I'm doing works, but I get an error message.
My attempts are:
read strCPROC strIPROC strAPROC <<<$(ssh -n -T hscroot@$HMC "lshwres -r proc -m $strIDENT --level sys -F \"configurable_sys_proc_units... (11 Replies)
Discussion started by: NKaede
11 Replies
LEARN ABOUT MOJAVE
tcl_substobj
Tcl_SubstObj(3) Tcl Library Procedures Tcl_SubstObj(3)__________________________________________________________________________________________________________________________________________________NAME
Tcl_SubstObj - perform substitutions on Tcl objects
SYNOPSIS
#include <tcl.h>
Tcl_Obj *
Tcl_SubstObj(interp, objPtr, flags)
ARGUMENTS
Tcl_Interp *interp (in) Interpreter in which to execute Tcl scripts and lookup variables. If an error occurs, the interpreter's
result is modified to hold an error message.
Tcl_Obj *objPtr (in) A Tcl object containing the string to perform substitutions on.
int flags (in) ORed combination of flag bits that specify which substitutions to perform. The flags TCL_SUBST_COM-
MANDS, TCL_SUBST_VARIABLES and TCL_SUBST_BACKSLASHES are currently supported, and TCL_SUBST_ALL is pro-
vided as a convenience for the common case where all substitutions are desired.
_________________________________________________________________DESCRIPTION
The Tcl_SubstObj function is used to perform substitutions on strings in the fashion of the subst command. It gets the value of the string
contained in objPtr and scans it, copying characters and performing the chosen substitutions as it goes to an output object which is
returned as the result of the function. In the event of an error occurring during the execution of a command or variable substitution, the
function returns NULL and an error message is left in interp's result.
Three kinds of substitutions are supported. When the TCL_SUBST_BACKSLASHES bit is set in flags, sequences that look like backslash substi-
tutions for Tcl commands are replaced by their corresponding character.
When the TCL_SUBST_VARIABLES bit is set in flags, sequences that look like variable substitutions for Tcl commands are replaced by the con-
tents of the named variable.
When the TCL_SUBST_COMMANDS bit is set in flags, sequences that look like command substitutions for Tcl commands are replaced by the result
of evaluating that script. Where an uncaught "continue exception" occurs during the evaluation of a command substitution, an empty string
is substituted for the command. Where an uncaught "break exception" occurs during the evaluation of a command substitution, the result of
the whole substitution on objPtr will be truncated at the point immediately before the start of the command substitution, and no characters
will be added to the result or substitutions performed after that point.
SEE ALSO
subst(n)
KEYWORDS
backslash substitution, command substitution, variable substitution
Tcl 8.4 Tcl_SubstObj(3)