Sponsored Content
Top Forums Shell Programming and Scripting any explanation for thsi shell script behaviour Post 10150 by doeboy on Thursday 8th of November 2001 01:12:33 PM
Old 11-08-2001
I would have to disagree with that statement that both cases spawn a child shell.

Perderabo is correct.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

explanation for a script

Guys, was wondering what the meaning of the below bit is ? awk -F ' ' '{print $1 " " $2 ;}' $TEMPFILE | (rm -f $TEMPFILE; sed 's/$/ '"$box"'/g' > $TEMPFILE) Can anyone explain this in detail? what is the significance of rm -f $TEMPFILE here? What all IO/buffering happens here ?How the... (0 Replies)
Discussion started by: hashin_p
0 Replies

2. Shell Programming and Scripting

Spaces behaviour in shell

Hello, I am a bit puzzled by the way my shell treats spaces in filenames. An example will be way clearer than any explanation I can make: $ ls test\ file\ with\ spaces test file with spaces $ var="test\ file\ with\ spaces" $ echo $var test\ file\ with\ spaces $ ls $var ls: cannot... (4 Replies)
Discussion started by: SDelroen
4 Replies

3. Shell Programming and Scripting

Explanation for interesting sed behaviour?

This is my first post so hi to you all. I have browsed these forums in the past and what a great community and resource this is! Thanks to all the contributors ... I look forward to being able to give something back. In the meantime, I have a little conundrum concerning sed. My very simple... (6 Replies)
Discussion started by: Gavster
6 Replies

4. UNIX for Dummies Questions & Answers

shell: reconcile language and sort behaviour

Hi Don't know if this is a dummy question, but let's give it a try. I yesterday had a problem with undefined behaviour in the sort shell command (I'm using bash), leading to different sort orders without apparent reasons. I resolved this by typing export LC_ALL="C" export LC_COLLATE="C"... (5 Replies)
Discussion started by: jossojjos
5 Replies

5. Shell Programming and Scripting

Shell Script Explanation

Hello, I have seen this script on this site. I understand most of it. However I am a bit stuck on the part in red. It appears to be expanding for file in *.zip do zipdir=${file%.*} mkdir $zipdir || echo "unable to create $zipdir" cp $file $zipdir || echo "unable to copy $file"... (3 Replies)
Discussion started by: jaysunn
3 Replies

6. Shell Programming and Scripting

need an explanation on this script...

The following script will create a directory in a directory and will go on as many times as the number you will give in. I am trying to find out how it works ... can someone please help me with that? #!/bin/sh #create a variable and set it to 1 n=1 #start a loop as... (3 Replies)
Discussion started by: I-1
3 Replies

7. Solaris

Explanation of script

Hello Guys, can someone help explain the script below for me? I will really appreciate it. vi db_script #!/bin/sh echo .cron job run on.`date`> cronjob.txt df -h >> cronjob.txt echo welcome to home (2 Replies)
Discussion started by: cjashu
2 Replies

8. Shell Programming and Scripting

Korn shell behaviour in AIX

Hi, Consider the code snippet below: fun() { while read x do echo $x done < somefile_that_does_not_exists } fun echo I am here Korn shell on HPUX prints the message "I am here", while the behaviour is different on AIX korn shell. We do not get the message on AIX. Any... (5 Replies)
Discussion started by: 116@434
5 Replies

9. Shell Programming and Scripting

What does this shell script do? Need in depth explanation please

Hi My friend wrote this particular script and won't tell me what it does, and when I run it I don't understand it. What does the entire script do with specifics please. Thanks Bob #!/bin/bash current=0 while ; do if ; then echo ${current} current=$((${current}+1)) fi done (1 Reply)
Discussion started by: shadowknight777
1 Replies

10. Shell Programming and Scripting

Shell script explanation

Hey, can someone explain me this script? i=0 while read WORT do echo $WORT|grep a>/dev/null || echo$WORT|grep B>dev/null || let i=$i+1 done echo $i The first lane initializie the variable i with the value of 0. The loop line has 3 different options because of ||. The only option I... (10 Replies)
Discussion started by: newuser21
10 Replies
spawn.h(3HEAD)							      Headers							    spawn.h(3HEAD)

NAME
spawn.h, spawn - spawn SYNOPSIS
#include <spawn.h> DESCRIPTION
The <spawn.h> header defines the posix_spawnattr_t and posix_spawn_file_actions_t types used in performing spawn operations. The <spawn.h> header defines the flags that can be set in a posix_spawnattr_t object using the posix_spawnattr_setflags() function: POSIX_SPAWN_RESETIDS POSIX_SPAWN_SETPGROUP POSIX_SPAWN_SETSCHEDPARAM POSIX_SPAWN_SETSCHEDULER POSIX_SPAWN_SETSIGDEF POSIX_SPAWN_SETSIGMASK Inclusion of the <spawn.h> header can make visible symbols defined in the <sched.h>, <signal.h>, and <sys/types.h> headers. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
sched.h(3HEAD), semaphore.h(3HEAD), signal.h(3HEAD), types.h(3HEAD), attributes(5), standards(5) SunOS 5.10 10 Sep 2004 spawn.h(3HEAD)
All times are GMT -4. The time now is 06:46 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy