For starters, your code looks to be of the Bourne shell family (sh, Ksh, bash, etc.) and not csh. First line should probalby be #!/usr/bin/env bash or something similar.
Secondly, there needs to be whitespace on either side of brackets:
Finally, your expression will never evaluate to true because you are comparing a constant (tty) rather than the contents of a variable. You'll need to dig out the current tty and assign it to the variable and then test by causing it to expand -- like above.
Hi all,
I am having a problem in comparing numeric value with string.
I have a variable in my script which gets the value dynamically. It can be a numeric value or a string.
I have to do separate task based on its value numeric or sting variable VARIABLE.
I grep FILE_COUNT and obtained... (7 Replies)
hi,
I need to create an IF condition. I read a line from a file and get the 5 word using space as a delimited. This word can have only two values either '*' or '1-5'
I need to write an IF condition for two cases. I can either compare it to * or 1-5(or even 1 by cutting and getting only the... (3 Replies)
Hi,
I am trying to write a script to show the status of a Network card.
Variables:
chosennic is a read variable
statuss=`/sbin/ifconfig $chosennic | grep MTU | awk '{print $1}'`
ipadd=`/sbin/ifconfig $chosennic | grep Bcast | awk '{print $2}' | awk -F : '{print $2}'`... (2 Replies)
Hello,
I need help with a program I'm trying to write for my moms science class, what it has to do is accept a user inputed string and search for it in a text file (file contains all the elements)
The file looks like:
H Hydrogen 1
He Helium 2
Li Lithium 3
Be Beryllium 4
...
If the... (1 Reply)
Hello,
I need help with a program I'm trying to write for my moms science class, what it has to do is accept a user inputed string and search for it in a text file (file contains all the elements)
The file looks like:
H Hydrogen 1
He Helium 2
Li Lithium 3
Be Beryllium 4
...
If the... (0 Replies)
Hi Champs,
I am a newbie to unix world, and I am trying to built a script which seems to be far tough to be done alone by me.....
" I am having a raw csv file which contains around 50 fields..."
From that file I have to grep 2 fields "A" and "B"....field "A" is to be aligned vertically... (11 Replies)
Hi All,
I am trying to to compare a string variable with a string literal inside a loop but keep getting the
./testifstructure.sh: line 6:
#!/bin/sh
BOOK_LIST="BOOK1 BOOK2"
for BOOK in ${BOOK_LIST}
do
if
then echo '1'
else
echo '2'
fi
done
Please use next... (1 Reply)
Hi ,
I have one file like
BUD,BDL BUDCAR
BUD,BDL BUDLAMP
ABC,CDF,KLT ABISKAR
ABC,CDF,KLT CORNEL
ABC,CDF,KLT KANNAD
JKL,HNM,KTY,KJY JAGAN
JKL,HNM,KTY,KJY HOUSE
JKL,HNM,KTY,KJY KATAK
JKL,HNM,KTY,KJY KOLKA
The o/p should be like
BUD,BDL BUDCAR,BUDLAMP
ABC,CDF,KLT... (4 Replies)
Good morning,
I need compare this string.
if || || ; then
But this line not work, somebody can say me what is the error.
Thank you for advanced. (5 Replies)
How can i comparing string's whith blank spaces?
I have this problem:
DIF1="STRING 1212"
DIF2="STRING 1212"
if
then
echo "Differents"
else
echo "Equals"
fi
Error:
1212}: unknown test operator (3 Replies)
Discussion started by: Xedrox
3 Replies
LEARN ABOUT XFREE86
script
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)