I suggest that you share your script's code (along with your operating system and shell version), a sample of the input data, a sample of the erroneous output that your script generates, and, finally, the desired output. Since non-graphic characters are crucial here, make sure to post octal/hex dumps of the input/output, so that there is no ambiguity about what we're seeing.
To generate a ^M in a shell script is trivial:
If that doesn't work, I'm inclined to believe that the problem lies elsewhere.
On an unrelated note, your tr attempt does not convert from one control character to another. It selects a range of them and converts them to spaces, so, naturally, they "disappear".
I wrote a ksh script for Helpdesk. I need to know how to disable ctrl-c,ctrl-z,ctrl-d..... so that helpdesk would not be able to get to system prompt :confused: (6 Replies)
I have a write a script in VI editor.whenever i open the Vi script ,it is showing ctrl-M at the end of each line.
Please tell me how to remove this Ctrl-M from each line.
Thanks in Advance (3 Replies)
I am trying to read HTTP data from a socket. However, for the final set of data being read using read(), read blocks and the control doesnt come back for further processing. I tried using select, but it didn't work...
Any help would be greatly acknowledged.:) (2 Replies)
Hi All,
I am trying to generate quarter dates with user giving input as begin date and end date. Example: Input by user:
begin_date = "2009-01-01"
end_date = 2010-04-30"
required output:
2009-01-01 2009-03-31 09Q01
2009-04-01 2009-06-30 09Q02
.
.
till
2010-01-01 2010-03-31 10Q01
... (9 Replies)
H! I have written script where it need to invoke the perl script in background, then write the pid in temp file then bring back the job to foreground. whenever the Ctrl-C or Ctrl-Z is pressed in the script has to exit and prompt should be dispalyed. but this script causing exit from shell session... (2 Replies)
Hello All,
Could you please help with this.
This is what I have:
506234.222 2
506234.222 2
506234.222 2
506234.222 2
508212.200 2
508212.200 2
333456.111 2
333456.111 2
333456.111 2
333456.111 2
But this is what I want:
506234.222 1
506234.222 2
506234.222 2
506234.222 3 (5 Replies)
Hi,
while executing shell script, in the middle of the process, if we kill the shell script( ctrl+z or ctrl+c), script will be killed and the files which using for the script will be in the folder.
How to handle those scenarios. Is there any possibilities, if user breaks the script, I need to... (3 Replies)
Hi ,
Am trying to send mail using the mail command, but the mail command is working but its not sending automatically after pressing .(dot) in the command prompt it sends . How to achieve that. Also it showing the below line after pressing the dot .
/home/abc1/dead.letter... Saved message in... (5 Replies)
Hi friends,
I am trying to add a newline char ('\n') between the query and the commit statement in the following shell script.
#! /bin/sh
echo "select * from tab; commit;" > data.sql
I have tried typing in "Ctrl-V + Ctrl-J" combination which has inserted ^@ (NUL) character but the commit... (1 Reply)
Hi..!
I'm stuck with my automation of starting a process and keeping it running even after the current ssh session has exited..
So i'm trying to use command 'screen'. which is doing exactly what i wanted, But the problem is automation of the same.
i will have to press Ctrl+a and Ctrl+d for... (2 Replies)
Discussion started by: chandana hs
2 Replies
LEARN ABOUT LINUX
script
SCRIPT(1) BSD General Commands Manual SCRIPT(1)NAME
script -- make typescript of terminal session
SYNOPSIS
script [-a] [-c COMMAND] [-e] [-f] [-q] [-t] [file]
DESCRIPTION
Script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive
session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript.
Options:
-a Append the output to file or typescript, retaining the prior contents.
-c COMMAND
Run the COMMAND rather than an interactive shell. This makes it easy for a script to capture the output of a program that behaves
differently when its stdout is not a tty.
-e Return the exit code of the child process. Uses the same format as bash termination on signal termination exit code is 128+n.
-f Flush output after each write. This is nice for telecooperation: One person does `mkfifo foo; script -f foo' and another can super-
vise real-time what is being done using `cat foo'.
-q Be quiet.
-t Output timing data to standard error. This data contains two fields, separated by a space. The first field indicates how much time
elapsed since the previous output. The second field indicates how many characters were output this time. This information can be used
to replay typescripts with realistic typing and output delays.
The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not
set) for the C-shell, csh(1)).
Certain interactive commands, such as vi(1), create garbage in the typescript file. Script works best with commands that do not manipulate
the screen, the results are meant to emulate a hardcopy terminal.
ENVIRONMENT
The following environment variable is utilized by script:
SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most
shells set this variable automatically).
SEE ALSO csh(1) (for the history mechanism), scriptreplay(1).
HISTORY
The script command appeared in 3.0BSD.
BUGS
Script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
AVAILABILITY
The script command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
Linux July 30, 2000 Linux