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1. Shell Programming and Scripting
Hi,
I tried to look up the issue i'm experiencing, but i'm confused what's wrong with my script.
After executing the script I'm getting the following error
expr: non-numeric argument
syntax error on line 1, teletype
After some research, it seems that the problem relates to bc.
I have... (1 Reply)
Discussion started by: nms
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2. Shell Programming and Scripting
If ($argv == “-debug”) then
Echo “in loop”
Endif
But this is not working. If I modify this code and remove “-“, then it works.
Similarly I am getting problem using grep command also
Grep “-debug” Filename
Can someone please help me on how to resolve these... (1 Reply)
Discussion started by: sarbjit
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3. Shell Programming and Scripting
Hi,
How to return the string "y" to the calling function.
Getting the below error when function returns the value.
return: y: numeric argument required
With Regards (2 Replies)
Discussion started by: milink
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4. UNIX for Dummies Questions & Answers
Can someone tell me how to change the first column in a very large 17k line file from a random 10 digit numeric value to a non numeric value. The format of lines in the file is:
1702938475,SNU022,201004
the first 10 numbers always begin with 170 (6 Replies)
Discussion started by: Bahf1s
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5. Shell Programming and Scripting
Hi all,
i am facing the error "expr: non-numeric argument" when i use the expr command.
Following is the expression which i want to execute
HR=$(echo `date +%H`)
MIN=$(echo `date +%M`)
TOT_MIN=`expr "$HR" \* 60+$MIN` | bc
echo $TOT_MIN
Here I am being reported with the error expr:... (6 Replies)
Discussion started by: sparks
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6. Shell Programming and Scripting
Can someone please help me with this SHELL script?
I need to create a script that gets a positive number n as an argument. The script must calculate the factorial of its argument. In other words, it must calculate n!=1x2x3x...xn. Note that 0!=1.
Here is a start but I have no clue how to... (3 Replies)
Discussion started by: I-1
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7. UNIX for Dummies Questions & Answers
hi there,
I was recently introduced to this site by a friend. I hope you guys can help with a code error i can't seem to debug.I can get to add two different data types together. A snippet of the code is below:
echo -n "Enter Your MOnthly Investment"
read Inv
PIP= $(echo "scale=2; 10 / 100"... (4 Replies)
Discussion started by: Allenzo
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8. Shell Programming and Scripting
Hi All,
Is there any code in Perl which can differentiate between numeric and non-numeric input? (11 Replies)
Discussion started by: Raynon
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9. UNIX for Dummies Questions & Answers
quick question, I am trying to run this simple equation
expr 2048 / 2.354
but get a "expr: non-numeric argument" error when ever its run. I believe it may be caused by the decimal point but I do not know how to remedy it. (3 Replies)
Discussion started by: TiredOrangeCat
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10. Solaris
I want to figure out what is the reason of error message I have in Solaris 10. Why Solaris 10 dosn't recognize 65535?
ps: 65535 is an invalid non-numeric argument for -p option
usage: ps
'format' is one or more of:
Thank you (5 Replies)
Discussion started by: gogogo
5 Replies
SCRIPT(1) BSD General Commands Manual SCRIPT(1)
NAME
script -- make typescript of terminal session
SYNOPSIS
script [-adfkpqr] [-F pipe] [-t time] [file [command ...]]
DESCRIPTION
The script utility 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.
If the argument command is given, script will run the specified command with an optional argument vector instead of an interactive shell.
The following options are available:
-a Append the output to file or typescript, retaining the prior contents.
-d When playing back a session with the -p flag, do not sleep between records when playing back a timestamped session.
-F pipe
Immediately flush output after each write. This will allow a user to create a named pipe using mkfifo(1) and another user may watch
the live session using a utility like cat(1).
-f Create file.filemon or typescript.filemon using filemon(4).
-k Log keys sent to the program as well as output.
-p Play back a session recorded with the -r flag in real time.
-q Run in quiet mode, omit the start, stop and command status messages.
-r Record a session with input, output, and timestamping.
-t time
Specify the interval at which the script output file will be flushed to disk, in seconds. A value of 0 causes script to flush after
every character I/O event. The default interval is 30 seconds.
The script ends when the forked shell (or command) 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. The script utility works best with commands that do not
manipulate the screen. The results are meant to emulate a hardcopy terminal, not an addressable one.
ENVIRONMENT
The following environment variables are utilized by script:
SCRIPT
The SCRIPT environment variable is added to the sub-shell. If SCRIPT already existed in the users environment, its value is overwrit-
ten within the sub-shell. The value of SCRIPT is the name of the typescript file.
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), filemon(4) (for the history mechanism).
HISTORY
The script command appeared in 3.0BSD.
The -d, -p and -r options first appeared in NetBSD 2.0 and were ported to FreeBSD 9.2.
BUGS
The script utility places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
It is not possible to specify a command without also naming the script file because of argument parsing compatibility issues.
When running in -k mode, echo cancelling is far from ideal. The slave terminal mode is checked for ECHO mode to check when to avoid manual
echo logging. This does not work when the terminal is in a raw mode where the program being run is doing manual echo.
If script reads zero bytes from the terminal, it switches to a mode when it only attempts to read once a second until there is data to read.
This prevents script from spinning on zero-byte reads, but might cause a 1-second delay in processing of user input.
BSD
December 4, 2013 BSD