I'm just getting started to lean C and I'm using Ubuntu today I found a tutorial at this site: http://einstein.drexel.edu/courses/CompPhys/General/C_basics/c_tutorial.html and I got an error after compiling the fist code:
#include < stdio.h>
void main()
{
printf("\nHello World\n");
} ... (9 Replies)
Ok here is the deal, I have a command given to me by some systems guy who I cannot get ahold of on the weekend without paying him alot of money to help me. I need to get this done before Monday as I am just getting pummeled by DOS attacks. The comand given was....
netstat -ntu | awk '{print... (1 Reply)
I have a file with 3 digit numbers in it formatted as such:
123
065
321
How would I go about seeing if each number is less than 100 and if so outputting it to another file
Yes, I am a bit of a noob. I have tried with grep but I don't think it'll work.
Any general direction would be... (6 Replies)
Hello to all...this is my first post (so please go easy). :)
I feel pretty solid at expect scripting, but I'm running into an issue that I'm not able to wrap my head around. I wrote a script that is a little advanced for logging into a remote Linux machine and changing text in a file using sed.... (2 Replies)
Hello everyone.
i work in a school and i ran into an application today that is a real pickle. i know how to make it work, but i would need to script it. The way to make it work would be to have a script check each local user profile on login, see if the directory already exists, do nothing... (27 Replies)
Hi I'm pretty new to scripting and I've been googling around looking for an answer but have yet to come up with a proper solution. I work with multiple android devices at a time and I'm looking to simplify my life with a script. Basically I'm looking for a script that takes the device ID's and then... (2 Replies)
Hello. I'm attempting to create a shell script to assist me by saving time with one of my hobbies. I am an Android Enthusiast and currently build a few roms for one of the devices.
One of the roms I make is ported from a different device to mine (I get the original for the HTC Desire HD and... (3 Replies)
Hello,
I am new to shell scripting and i am trying to figure why is this not working with else statement.
I am searching for every directory in that DIR i am in, however the "else" seems to be triggered whenever the run the script..
Much thanks in advance!
#!/bin/shell
for item in... (3 Replies)
Hello,
I am in a Unix class and have been out of town. I have been tasked to generate a couple of scripts and ahve never done it before. I have a virtual machine running Ubuntu. The task is below
Prompt the system administrator for all valid input parameters
Generate a menu to ask which... (1 Reply)
Hello All,
I have a file of ip addresses called activeips.txt
What I'm trying to do is run a simple bash script that has a loop in it. The loop is a cat of the IP addresses in the file.
The goal is to run 2 nmap commands to give me outputs where each address in the list has an OS... (11 Replies)
Discussion started by: Dirk_Pitt
11 Replies
LEARN ABOUT DEBIAN
plan9-read
CAT(1) General Commands Manual CAT(1)NAME
cat, read, nobs - catenate files
SYNOPSIS
cat [ file ... ]
read [ -m ] [ -n nline ] [ file ... ]
nobs [ file ... ]
DESCRIPTION
Cat reads each file in sequence and writes it on the standard output. Thus
cat file
prints a file and
cat file1 file2 >file3
concatenates the first two files and places the result on the third.
If no file is given, cat reads from the standard input. Output is buffered in blocks matching the input.
Read copies to standard output exactly one line from the named file, default standard input. It is useful in interactive rc(1) scripts.
The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines.
Read always executes a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a-
time data. It never reads any more data from the input than it prints to the output.
Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them. It is
useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window.
SOURCE
/src/cmd/cat.c
/src/cmd/read.c
/bin/nobs
SEE ALSO cp(1)DIAGNOSTICS
Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines.
BUGS
Beware of and which destroy input files before reading them.
CAT(1)