07-14-2009
Thanks Jim for the reply. I got your point of less behaving differently when executed directly from the terminal and when piped.
I am confused about what you mean by interactive mode. I can get into interactive mode, only when I pipe stdin to less. But when I execute less directly from the terminal, the screen is seemingly frozen and I can't get into interactive mode. When I say that the screen is seemingly frozen, I mean my typing isn't displayed, the same behaviour when you type in password. I hope I haven't confused you.
I can get out of this "frozen stage" when I type exit and then I get into the interactive mode of less. It seems like when I type "less" I change the terminal control to not display what I'm typing.
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
I'm trying to compile and install both most recent version of 'make' and the
most recent version of 'openssh' on my Sparc20.
I've run into the following problems... and I don't know what they mean. Can
someone please help me resolve these issues?
I'm using the 'make' version that was... (5 Replies)
Discussion started by: xyyz
5 Replies
2. UNIX for Dummies Questions & Answers
Hi
how can i do this?
1) shell script which writes data and time on to a file if filesystem exceeds 70% of space.
2) make entry to cron table to run a script every 15 mins.
and can anyone expplain or demonstrate the difference between variables used in inside a function and outside a... (3 Replies)
Discussion started by: vivekshankar
3 Replies
3. UNIX for Advanced & Expert Users
Hi,
I,ve a Unixware 7.1.3 working correctly for two years ago, since a several weeks I've a problem with the command last . The information that this command return is :
For example :
1.- The user root , time login : 12:15 h, time logoff 12:15 h (the real time is 14:00). Connected time is... (3 Replies)
Discussion started by: By_Jam
3 Replies
4. UNIX for Dummies Questions & Answers
I'm having problems uses "if"
it works fine when i do this.
#!/bin/sh
a= 10
qw= 2
w= 20
{
if && ;then
echo 3
fi
}
However if i try to do
#!/bin/sh
a= 10 (5 Replies)
Discussion started by: THM
5 Replies
5. Shell Programming and Scripting
Hello, I have the following piece of code that tries to retrieve the result of a .sh:
. $HOME/prueba/Scripts/Recogida/recogida_sedra.sh
resultado=$?
echo "el resultado es : $resultado"
if ; then
echo "Se va a preprocesar los archivos"
In the code of recogida.sh I have the... (8 Replies)
Discussion started by: danietepa
8 Replies
6. SuSE
good friends I am new to linux and I have the following
TELNET service problem entering data devo
telnet to a Windows server 2003 server and passes
will not let me since the move to this server by
telnet tells me the characters and thus invalidates me
income, I have a service application... (1 Reply)
Discussion started by: pepetico
1 Replies
7. UNIX for Dummies Questions & Answers
I have written the following code in cygwin to create directories in windows based on the parameter passed.
echo $1 > fullpath
path1=`awk -F / '{print $1}' $fullpath
path2=`awk -F / '{print $2}' $fullpath
if
then
if
then
if
then
continue
... (4 Replies)
Discussion started by: janardhanamk
4 Replies
8. Shell Programming and Scripting
#! /bin/bash
# ask what the user would like to do
CMD=$CMD
MBA=$MB
RS=$RS
CT=$CT
echo
echo -n "What would you like to do??
REMEMBER WHEN PROGRAMMING ICP's TO SELECT CORRECT COMMAND ACCORDING TO
NECCESSARY TYPE CODE!
Please enter a command
ct = program ctek
... (5 Replies)
Discussion started by: tdalyman
5 Replies
9. Shell Programming and Scripting
I'm new in Shell Programming and Scripting, I would like to ask some questions.
ps -ef | grep $appNAme | grep -v grep <-- what will it return when it find a process is running? return 1 or 0
if
then
exit 1 <--- if = 0 , run this ?
else
continue <--- if = 1 , run this ?... (5 Replies)
Discussion started by: LoAlex
5 Replies
SCRIPT(1) User Commands SCRIPT(1)
NAME
script - make typescript of terminal session
SYNOPSIS
script [options] [file]
DESCRIPTION
script makes a typescript of everything displayed 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 the dialogue in this file. If no filename is given, the dialogue is saved in the file type-
script.
OPTIONS
-a, --append
Append the output to file or to typescript, retaining the prior contents.
-c, --command 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
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
Flush output after each write. This is nice for telecooperation: one person does `mkfifo foo; script -f foo', and another can
supervise real-time what is being done using `cat foo'.
--force
Allow the default output destination, i.e. the typescript file, to be a hard or symbolic link. The command will follow a symbolic
link.
-q, --quiet
Be quiet (do not write start and done messages to standard output).
-t[file], --timing[=file]
Output timing data to standard error, or to file when given. 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.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
NOTES
The script ends when the forked shell exits (a control-D for 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.
It is not recommended to run script in non-interactive shells. The inner shell of script is always interactive, and this could lead to
unexpected results. If you use script in the shell initialization file, you have to avoid entering an infinite loop. You can use for
example the .profile file, which is read by login shells only:
if test -t 0 ; then
script
exit
fi
You should also avoid use of script in command pipes, as script can read more input than you would expect.
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.
script is primarily designed for interactive terminal sessions. When stdin is not a terminal (for example: echo foo | script), then the
session can hang, because the interactive shell within the script session misses EOF and script has no clue when to close the session. See
the NOTES section for more information.
AVAILABILITY
The script command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
/util-linux/>.
util-linux June 2014 SCRIPT(1)