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use expr to add 512 and again to divide by 1024

X=`expr val_in_kilobytes + 512`
MB=`expr $X / 1024`

If you have your heart set on doing it in sed:

sed '
/(NP/ {
:loop
N
s/\n/ /
/)$/ !b loop
}
' file

I've always had problems using "\n" on the left side of "s" commands, but if it's...

make sure rm is not aliased to something like "rm -i" by doing

type rm

If it is, you can bypass the alias by doing

/bin/rm file

awk '{if($1 ~ "^[1-9]".*)printf("%d ",$1); if($NF ~ "\\([A-D]\\)") printf("%s",$NF"\n")}' abc.txt

Put the entire regular expression within the quotes:

if($1 ~ "^[1-9].*".*)

Also, it would...

At the beginning of the backup process, use the "touch" command to create a file called, say, "timestamp." This file will have a modification time corresponding to when the "touch" command was...

use cpio or tar

Several things you might want to check:

1. make sure VIMINIT is not set if you intend to use EXINIT.
VIMINIT takes precedence over EXINIT.

2. After you invoke vi, try the following ex command...

The following will process the back arrow keys by removing the codes for these keys plus removing the previous character (since the codes are indicating this character should be deleted):
...

Try using backspace instead of the left cursor key.

When I run it on Cygwin, it does not crash. However, it does not process correctly due to the codes generated by the left cursor key and I get...

Try declaring the variables used by the function to be local

1. What do you mean by "word"? If you mean strictly alphabetic characters then the first line has the first word as "root" and the second word as "pts", but the second line has the first word as...

The result of this operation is undefined.
g++-4.2 gives the following error message:
warning: operation on 'i' may be undefined
The reason for this is explained at
Sequence point - Wikipedia,...

Use the "pr" and "expand" commands to expand tabs to spaces and to specify a tab width value.

Are you sure you are using version 3 or newer of bash?
To see which version you are using, do the following:

echo $BASH_VERSINFOThere is some example code at
Bash Regular Expressions | Linux...

#!/bin/sh

while read LINE
do
case "$LINE" in
[A-Za-z]) echo "alpha";;
*) echo "not alpha";;
esac
done

please see Sequence point - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Sequence_point)

The following seems to work:

sed 's/<xsl:include href="\([A-Za-z]*\)/<xsl:include href="\1_tmp/' fileOne.xlsThe expression "[A-Za-z]" assumes filenames (excluding the ".xls" part) have only...