I have an expect script which is run inside a bash script. I am trying to ssh to a jump server then from the jump server telnet to each router in a file list and run the same command. I tried many ways but down not read the router list file for some reason.
I get the following error:
wrong # args: should be "read channelId ?numBytes?" or "read ?-nonewline? channelId"
while executing
"read "
Hi,
I have gps receiver log..its giving readings .like below
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GPSD,R=1
$GPGSV,3,1,11,08,16,328,40,11,36,127,00,28,33,283,39,20,11,165,00*71... (3 Replies)
I am using the while-loop to read a file.
The file has lines with null-terminated strings (words, actually.)
What I have by that reading - just a first word up to '\0'!
I need to have whole string up to 'new line' - (LF, 10#10, 16#A)
What I am doing wrong?
#make file 'grb' with... (6 Replies)
hi,
i have an existing ftp script that needs to be translated to SFTP so i have to use expect script to automate the login to the remote server.
Now im facing with a problem becaise i have at least 50 files to be renamed ont he remote server. It's a hassle to hardcode every single command... (1 Reply)
Hi ,
I am trying to write an shell, which reads a text file (from a location) having a list of numbers of strictly 5 digits only ex: 33144
Now my script will check :
1) that each entry is only 5 digits & numeric only, no alphabets, & its not empty.
2)then it executes a shell script called... (8 Replies)
Hi all
I have spent half a day trying to create a shell script which reads a configuration file on a line by line basis.
The idea of the file is that each will contain server information, such as IP address and various port numbers. The line could also be blank (The file is user created). Here... (1 Reply)
I have a LOG file which looks like this
Import started at: Mon Jul 23 02:13:01 EDT 2012
Initialization completed in 2.146 seconds.
--------------------------------------------------------------------------------
--
Import summary for Import item: PolicyInformation... (8 Replies)
Hi All,
Am trying to write wrapper shell/bash script on a utility tool for which i need to pass 2 files as arugment to execute utility tool.
Wraper script am trying is to do with above metion 2 files.
utility tool accepts :
a. userinfo file : which contains username
b. item file : which... (2 Replies)
Hello,
I'm works on Ubuntu server
My goal : I would like to read file line per line, but i want to started at the end of file.
Currently, I use instructions :
while read line;
do
COMMAND
done < /var/log/apache2/access.log
But, the first line, i don't want this. The file is long... (5 Replies)
i have a text file as belows, it includes 2 columns, 1st is the column name, 2nd is the file_name
data_file.txt
column_name file_name
col1 file1
col2 file2
col3 file1
col4 file1
col5 file2
now, i would like to... (4 Replies)
Discussion started by: tester111
4 Replies
LEARN ABOUT OPENDARWIN
read
read(n) Tcl Built-In Commands read(n)
__________________________________________________________________________________________________________________________________________________NAME
read - Read from a channel
SYNOPSIS
read ?-nonewline? channelId
read channelId numChars
_________________________________________________________________DESCRIPTION
In the first form, the read command reads all of the data from channelId up to the end of the file. If the -nonewline switch is specified
then the last character of the file is discarded if it is a newline. In the second form, the extra argument specifies how many characters
to read. Exactly that many characters will be read and returned, unless there are fewer than numChars left in the file; in this case all
the remaining characters are returned. If the channel is configured to use a multi-byte encoding, then the number of characters read may
not be the same as the number of bytes read.
ChannelId must be an identifier for an open channel such as the Tcl standard input channel (stdin), the return value from an invocation of |
open or socket, or the result of a channel creation command provided by a Tcl extension. The channel must have been opened for input.
If channelId is in nonblocking mode, the command may not read as many characters as requested: once all available input has been read, the
command will return the data that is available rather than blocking for more input. If the channel is configured to use a multi-byte
encoding, then there may actually be some bytes remaining in the internal buffers that do not form a complete character. These bytes will
not be returned until a complete character is available or end-of-file is reached. The -nonewline switch is ignored if the command returns
before reaching the end of the file.
Read translates end-of-line sequences in the input into newline characters according to the -translation option for the channel. See the
fconfigure manual entry for a discussion on ways in which fconfigure will alter input.
USE WITH SERIAL PORTS
For most applications a channel connected to a serial port should be configured to be nonblocking: fconfigure channelId -blocking 0. Then
read behaves much like described above. Care must be taken when using read on blocking serial ports:
read channelId numChars
In this form read blocks until numChars have been received from the serial port.
read channelId
In this form read blocks until the reception of the end-of-file character, see fconfigure -eofchar. If there no end-of-file charac-
ter has been configured for the channel, then read will block forever.
SEE ALSO
file(n), eof(n), fblocked(n), fconfigure(n), Tcl_StandardChannels(3)KEYWORDS
blocking, channel, end of line, end of file, nonblocking, read, translation, encoding
Tcl 8.1 read(n)