Sponsored Content
Full Discussion: Shell Script Explanation
Top Forums Shell Programming and Scripting Shell Script Explanation Post 302430700 by jaysunn on Friday 18th of June 2010 11:12:50 AM
Old 06-18-2010
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


Code:
for file in *.zip
do
 zipdir=${file%.*}
 mkdir $zipdir || echo "unable to create $zipdir"
 cp $file $zipdir || echo "unable to copy $file"
done

Your help is well appreciated.

Kind Regards,
jaysunn
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

any explanation for thsi shell script behaviour

hello whats the difference between excuting a shell script as a)sh myscript.sh b). ./myscript.sh i noticed that my shell script works fine when i run it as . ./myscript .sh but fails when i run it as sh myscript.sh could anybody explain why. the shell script is very simple ... (9 Replies)
Discussion started by: xiamin
9 Replies

2. 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 (8 Replies)
Discussion started by: sickboy
8 Replies

3. 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... (2 Replies)
Discussion started by: sendhilmani
2 Replies

4. Shell Programming and Scripting

Need explanation of script

Hi All, Can anybody explain what this script is doing? #!/bin/sh who | cut -d " " -f1 | sort -u > userlist1 while true ; do sleep 60 who | cut -d" " -f1 | sort -u >userlist2 for username in `cat userlist1` ; do if ! grep "^$username$" userlist2 > /dev/null ; then echo... (0 Replies)
Discussion started by: vishalpatel03
0 Replies

5. 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

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... (1 Reply)
Discussion started by: rajar_r
1 Replies

7. 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

8. 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

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
echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.10 3 Aug 1994 echo(1B)
All times are GMT -4. The time now is 10:54 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy