Sponsored Content
Operating Systems OS X (Apple) 'time' does NOT work on a function in 'dash'. Post 303003311 by drl on Tuesday 12th of September 2017 08:17:53 AM
Old 09-12-2017
Hi.

This seems to be not time-critical, so you could write a nonce-script, like so on file z7:
Code:
#!/usr/bin/env dash
#!/usr/local/bin/dash

cat >delay.sh  <<EOF
#!/usr/bin/env dash
delayme()
{
        echo "Sleep for 2 second."
        sleep 2
}
delayme
EOF
chmod +x delay.sh

echo "Test the function."
# delayme
./delay.sh

echo "Test the timer."
# time ./delayme
time ./delay.sh

echo ""
echo "Test a real command."
time sleep 1

producing:
Code:
$ ./z7
Test the function.
Sleep for 2 second.
Test the timer.
Sleep for 2 second.
        2.01 real         0.00 user         0.00 sys

Test a real command.
        1.01 real         0.00 user         0.00 sys

On a system like:
Code:
OS, ker|rel, machine: Apple/BSD, Darwin 16.7.0, x86_64
Distribution        : macOS 10.12.6 (16G29), Sierra
dash - ( local: /usr/local/bin/dash, 2017-09-12 )

Best wishes ... cheers, drl
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Will the continue function work ????

I have written a script which does a following functions:- 1) Check a area if it is mounted or not 2) If the area is not mounted it will prompt the user to mount the are. 3) Once the area is mounted and the option is given as Y or y the script continues... My question is will the below... (2 Replies)
Discussion started by: kamlesh_p
2 Replies

2. Web Development

work with date function

hi, how can i can pass the value of unixformat to date/time? and how can i retrieve the day/month/year from a date? thanks a lot for your help ps:i using php (1 Reply)
Discussion started by: jasonx22
1 Replies

3. Programming

why printf() function don't go work?

I use FreeBSD,and use signal,like follows: signal(SIGHUP,sig_hup); signal(SIGIO,sig_io); when I run call following code,it can run,but I find a puzzled question,it should print some information,such as printf("execute main()") will print execute main(),but in fact,printf fuction print... (2 Replies)
Discussion started by: konvalo
2 Replies

4. Shell Programming and Scripting

Cannot get grep to work within function.

Hello again, Am having an issue now with getting a simple grep command to work within a function.. The function is as below... function findRecord() { output=grep "001" recordDatabase echo $output } At the moment the "001"... (3 Replies)
Discussion started by: U_C_Dispatj
3 Replies

5. UNIX for Dummies Questions & Answers

copy *. does not work in function

Hi, I want to copy a file/directory ( recursively , if needed) and if destination directory does not exist create it ( with parent directory, if needed). funcopy () { if ; then echo "$2 exists , copying files" cp -r "$1" "$2" else echo "Directory does not exist;Create directory" mkdir... (1 Reply)
Discussion started by: greet_sed
1 Replies

6. Shell Programming and Scripting

How the Sleep function will work?

Hi All, I am new to Unix , there i am facing one problem with sleep command. that is .. in while loop i have defined sleep function .. my condition is like this while #i knew this is infinite loop do sleep 200 echo "hello " done. this condition will never become .. true... (3 Replies)
Discussion started by: mandlysreedhar
3 Replies

7. Shell Programming and Scripting

Function doesn't work

Hello, and here's my problem: I can't get my function to do what I want. When I call my function get_from_A_to_F I give it an argument $remainder. I want my function to substitute a number higher than 9 to a specific letter. If the argument is equal to 10 than it should change it to "A".... (8 Replies)
Discussion started by: linas
8 Replies

8. Shell Programming and Scripting

Flock preventing function to work

Hi i have a script that check pings and i use flock to so the script wont run multipul times : its not the whole script but this is the idea : ( flock -x -w 3 200 || exit 1 /usr/sbin/fping -c$count -i$interval -a $hosts > $FILE1 2>&1 ) 200>/var/lock/.myscript.exclusivelock now i... (4 Replies)
Discussion started by: batchenr
4 Replies

9. UNIX for Beginners Questions & Answers

UNIX/Shell function does not work as wished

Hello everyone I really hope you can help me, I can't continue: Im on a project to work with my Server. I wanted to put on my server all data-systems and I did this: df -h The output is a string. How can I turn the string into a table? Dateisystem Größe Benutzt Verf. Verw% Eingehängt auf... (5 Replies)
Discussion started by: anonymuser
5 Replies

10. Shell Programming and Scripting

A dash to GOTO or a dash from GOTO, that is the question...

Well, guys I saw a question about GOTO for Python. So this gave me the inspiration to attempt a GOTO function for 'dash', (bash and ksh too). Machine: MBP OSX 10.14.3, default bash terminal, calling '#!/usr/local/bin/dash'... This is purely a fun project to see if it is possible in PURE... (3 Replies)
Discussion started by: wisecracker
3 Replies
env(1)								   User Commands							    env(1)

NAME
env - set environment for command invocation SYNOPSIS
/usr/bin/env [-i | -] [name=value]... [utility [arg... ]] /usr/xpg4/bin/env [-i | -] [name=value]... [utility [arg... ]] DESCRIPTION
The env utility obtains the current environment, modifies it according to its arguments, then invokes the utility named by the utility op- erand with the modified environment. Optional arguments are passed to utility. If no utility operand is specified, the resulting environment is written to the standard output, with one name=value pair per line. /usr/bin If env executes commands with arguments, it uses the default shell /usr/bin/sh (see sh(1)). /usr/xpg4/bin If env executes commands with arguments, it uses /usr/xpg4/bin/sh (see ksh(1)). OPTIONS
The following options are supported: -i | - Ignores the environment that would otherwise be inherited from the current shell. Restricts the environment for utility to that specified by the arguments. OPERANDS
The following operands are supported: name=value Arguments of the form name=value modify the execution environment, and are placed into the inherited environment before utility is invoked. utility The name of the utility to be invoked. If utility names any of the special shell built-in utilities, the results are unde- fined. arg A string to pass as an argument for the invoked utility. EXAMPLES
Example 1 Invoking utilities with new PATH values The following utility: example% env -i PATH=/mybin mygrep xyz myfile invokes the utility mygrep with a new PATH value as the only entry in its environment. In this case, PATH is used to locate mygrep, which then must reside in /mybin. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of env: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. PATH Determine the location of the utility. If PATH is specified as a name=value operand to env, the value given shall be used in the search for utility. EXIT STATUS
If utility is invoked, the exit status of env is the exit status of utility. Otherwise, the env utility returns one of the following exit values: 0 Successful completion. 1-125 An error occurred. 126 utility was found but could not be invoked. 127 utility could not be found. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: /usr/bin +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |enabled | +-----------------------------+-----------------------------+ /usr/xpg4/bin +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWxcu4 | +-----------------------------+-----------------------------+ |CSI |enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
ksh(1), sh(1), exec(2), profile(4), attributes(5), environ(5), standards(5) SunOS 5.11 2 Jan 2002 env(1)
All times are GMT -4. The time now is 11:45 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy