Need explanation of script

10 More Discussions You Might Find Interesting

1. 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...

2. 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

3. Shell Programming and Scripting

Explanation of FNR in this awk script

To merge mutiple *.tab files as: file1.tab rs1 A A rs2 A A rs3 C C rs4 C Cfile2.ind rs1 T T rs2 T T rs3 G G rs4 G Gand file3.tab rs1 B B rs2 B B rs3 L L rs4 L LOutput： file1.tab file2.tab file3.tab AA TT BB AA TT BB CC GG LL CC GG ...

4. 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

5. 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...

6. Shell Programming and Scripting

Script explanation

#script fileused=test.txt hostname=test.dis.com ftp $hostname <<-! > $fileused.err 2>&1 put file.txt /usr/text.txt bye ! kindly the above script the one marked as Bold and underlined as the above i am declaring the new variable as filename ,But when i used i had used as $fileused.err...

7. 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"...

8. 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...

9. Shell Programming and Scripting

Explanation of running this script

I have a script that has defined a log file like this. The name of the script is verify.sh Inside the script there is some thing like this. LOG=/usr/verify TDATE=`date "+%m%d%y"$$` LOGFILE=$LOG.$TDATE. and inside the script it has been written as echo "This is to verify" | tee -a...

10. Shell Programming and Scripting

Script explanation

I have the following script awk '$1 ~ /^*+/ { s += $NF; m++ } END { print NR, m, s } and I use it to get results from the following file A4792 4 COMP9021 5 K9 7 ABC 8 924 1 R2D2 3

LEARN ABOUT PHP

time_sleep_until

TIME_SLEEP_UNTIL(3)							 1						       TIME_SLEEP_UNTIL(3)

time_sleep_until - Make the script sleep until the specified time

SYNOPSIS

       bool time_sleep_until (float  $timestamp)

DESCRIPTION

	Makes the script sleep until the specified $timestamp.

PARAMETERS

	      o $timestamp
		- The timestamp when the script should wake.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.0	|						    |
       |	|						    |
       |	|  This  function is now available on Windows plat- |
       |	| forms.					    |
       |	|						    |
       +--------+---------------------------------------------------+
ERRORS
/EXCEPTIONS
	If the specified $timestamp is in the past, this function will generate a E_WARNING.

EXAMPLES

       Example #1

	      A time_sleep_until(3) example

	      <?php

	      //returns false and generates a warning
	      var_dump(time_sleep_until(time()-1));

	      // may only work on faster computers, will sleep up to 0.2 seconds
	      var_dump(time_sleep_until(microtime(true)+0.2));

	      ?>

NOTES

       Note

	       All signals will be delivered after the script wakes up.

SEE ALSO

       sleep(3), usleep(3), time_nanosleep(3), set_time_limit(3).

PHP Documentation Group 												       TIME_SLEEP_UNTIL(3)

Shell Programming and Scripting