prog2: I understand that there are three parameters that need to be passed($1, $2p, $3), but I don't know what they are. I assume one is a file name and another is a command, but I am not sure what the third is.
That's a start.
Then you need to know how the sed command works: after the options (here: -n) the next word is the sed code. Usually one puts quotes around it, to make it better visible (and allow spaces in it). The next word(s) is(are) input files.
Compare this information with "man sed"; it starts with a short invocation description.
You need to read more in order to understand the given sed command, and what parameters make sense.
Quote:
./prog2 1,4d Zidane
These are two arguments! Parameter $1 will become 1,4d
The eqivalent of set -x in sh-derived shells is set echo in csh-derived shells. All shells take a -x option:
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Discussion started by: syncmaster
2 Replies
LEARN ABOUT REDHAT
elks
elksemu(1) General Commands Manual elksemu(1)NAME
elksemu - Embedded Linux Kernel Subset emulator
SYNOPSIS
/lib/elksemu program [arguments]
DESCRIPTION
Elksemu is a program that allows 8086 ELKS programs to be run under Linux-i386. These programs can be compiled using the bcc(1) C compiler.
It is not usual to invoke /lib/elksemu directly, either the simple patch or kernel module distributed with it will cause the kernel to run
/lib/elksemu with the correct arguments whenever the user tries to execute an ELKS executable directly.
OPTIONS
There are no flag options to elksemu, the first argument is the name of the program to run the rest are arguments that are passed to the
Elks program.
The elksemu program is normally installed suid-root and in this event it is able to run execute only (chmod 111) elks executables and act
correctly on the suid permission bits on those executable. This may be considered a security hazard so elksemu does not have to be
installed suid-root.
SEE ALSO bcc(1), as86(1), ld86(1)BUGS
Elksemu is incomplete.
The program may still have security bugs!
Jan, 1997 elksemu(1)