Hi, I'm doing a script that reads lines from a file and then copy them to another file, if the user wants it.
But I'having problems to get the user selection because when I do the read to ask the user, the script reads the next line of the file.
The script looks like this:
#!/bin/sh
# ... (2 Replies)
I've discovered a very annoying problem in sh:
echo -en "one\ntwo\nthree" | while read VALUE
do
echo "${VALUE}"
done This will print one and two, but not three. The last line is IGNORED because it lacks a newline. This makes it hard to use sh for things like CGI scripting; you have... (6 Replies)
Hello mates:
I met problem with using read() & write(). I m trying to use read twice on client first time is the size of buffer, 2nd time is the buffer. I think I have to, coz I dnot know file size. So, I write twice on server as well -- 1st, filesize; 2nd, buffer.
The problem is, sometimes,... (11 Replies)
Hi,
Can any one please help me with this. Am struggling hard to get a solution.
I am doing telnet through a C program and getting the stdout file descriptor of the remote machine to pipe.
read() function is getting data, But whenl it receives SOH character ie. ^A ( Start of heading = Console... (2 Replies)
Dear all,
I have this archive: cat file.txt
archive test 02 sequence 03 02length 52
archive test 02 sequence 04 02length 52
archive test 02 sequence 05 02length 52
teste arquivo 06 sequencia 08 06 length 54
teste arquivo 06 sequencia 09 ... (8 Replies)
Hey, guys!
Trying to research this is such a pain since the read command itself is a common word. Try searching "unix OR linux read command examples" or using the command substitution keyword. :eek:
So, I wanted to use a command statement similar to the following.
This is kinda taken... (2 Replies)
Hi everybody, I am new to shell script. Please help me with this problem.
I have a file test.txt with the content like this:
I have a shell script test.sh like this
#!/bin/sh
while read line
do
echo $line >> out.txt
done < test.txt
out.txt is expected to have the same content... (10 Replies)
Hi,
I am facing issues with the below:
I have a lookup file say lookup.lkp.This lookup.lkp file contains strings delimited by comma(,).
Now i want to read this command from file and execute it.
So my code below is :
Contents in the lookup.lkp file is :
c_e,m,a,`cd $BOX | ls cef_*|tail... (7 Replies)
Hi, :)
I tried to make of "line returns" with "\n" :
read -p $'Do you really want append this line in '$CONFIG_FILE''\n'IP CLIENT: '$IP_INPUT' - PATH: '$PATH_INPUT''\n'y/n ?:' CONFIRM_INPUT
But it didn't work, please anyone have an idea? :b: (2 Replies)
Discussion started by: Arnaudh78
2 Replies
LEARN ABOUT DEBIAN
plan9-cat
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)