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read man bash on Parameter Expansion / Substring Expansion.

Would :-echo "$string" | tr -d "[a-z][A-Z]"... do the trick or does this not handle enough possible characters?

Perhaps:-#!/bin/ksh
c1="${string%?}" # Get 1st character...

Try something like...$ string1='3X'

$ case $string1 in [0-9][0-9]) : ;; [0-9]?) string1=${string1:0:1} ;; esac

$ echo $string1
3

$

I think you're confusing the concepts. In your original script you were trying to run a flat text file which happened to have a .c extension. Its contents cannot be interpreted by a shell nor by...

You cannot give the source file directly. Compile your C program and get an exe, and then execute the exe from the shell script.

Like:
Compile your C program:

$ cc -o myprog main.c
$ ls...

Yes, that will work the way you want. DON'T use cpuset 0. It is a special set that represents all cpus. Which is the default without cpuset anyway.

If you want the value converted to a number, you can try something like:
awk '
BEGIN { factor=1000 # change 1000 to 1024 if using ISO/IEC values
}
function f(v, ind) {
ind =...

$ echo Mem: 100M Active, 2150K Cache, 500M Buf, 10G Free | awk '{print substr($8,1,length($8)-1)}'
10

$ echo Mem: 100M Active, 2150K Cache, 500M Buf, 10G Free | awk '{print $8}'
10G

$ echo Mem: 100M Active, 2150K Cache, 500M Buf, 10G Free | awk '{print substr($8,length($8),1)}'
G


The first...

No this doesn't work like this. Here you normally read a line by line from a file.

$ cat file
LINE1
LINE2
I_AM_SEPARATOR
LINE11
LINE22
I_AM_SEPARATOR

$ while read line; do echo $line;...

#/bin/bash

print Enter line:
while read myline
do
echo $myline
print Enter line:
done

The utility dos2unix converts files with DOS/Windows carriage control to UNIX carriage control. cygwin's unix2dos simply takes a file and converts it without redirecection needed.

dos2unix...

\r is added by your text editor (Windows text editor?) at the end of each line (carriage return (http://en.wikipedia.org/wiki/Carriage_return#Typewriters))
You have to configure it to NOT write \r...

Sure:
awk '
1 # Perform the default action: {print $0} (print the line)
$1==3{ # if the first field equals 3
print RS s #...

Hi, try:
awk '1; $1==3{print RS s}' s=" 3b ccc ccc ccc" infile

functionally the same sed but shorter without back-references sed 's/\.[^.]*$/_failed&/' :D

Your basic global substitution syntax for sed is:

's/search_term/replace_term/g'

This sed command says that:

1. search for any character combination, i.e. \(.*\). Here .* represents any...

My bad. This one inserts the "_failed" command before the extension.


#!/bin/ksh
if [ -e $1 ]; then
ofile=`echo $1 | sed 's/\(.*\)\.\(.*\)/\1_failed.\2/g'`
cp "$1" "${ofile}"
fi

...

Hi,

Try this one,

#! /usr/bin/bash
base=$1
if [ -f ${base} ];
then
mv ${base} ${base/./_fails.}
else
echo "${base} file not found"
fi


Cheers,
Ranga:)