if [ ! -r ${1} ] meaning in ksh

Tags

ksh, shell scripts

Top Forums Shell Programming and Scripting if [ ! -r ${1} ] meaning in ksh

04-09-2008

Registered User

14, 0

Join Date: Mar 2008

Last Activity: 21 April 2008, 3:41 AM EDT

Posts: 14

Thanks Given: 0

Thanked 0 Times in 0 Posts

if [ ! -r ${1} ] meaning in ksh

hi,
iam new of unik
if [ ! -r ${1} ] meaning in ksh

naveeng.81

View Public Profile for naveeng.81

Find all posts by naveeng.81

04-09-2008

Registered User

185, 5

Join Date: Feb 2007

Last Activity: 20 July 2017, 9:10 AM EDT

Location: Mumbai, India

Posts: 185

Thanks Given: 6

Thanked 5 Times in 5 Posts

hi
! = not
-r = readable
${1} = first argument to script ..here its file

if [ not readable ${1} ] # if ${1} file is not readable

refer this page http://en.wikipedia.org/wiki/Test_(Unix)

zedex

View Public Profile for zedex

Find all posts by zedex

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Meaning of $1^

Hello everyone, I'm looking for the meaning of this expression, as I don't understand it quite clearly : $1^ What do you think it could be? I thought either: - match lines starting with argument 1 but it should be ^$1 - turn line around : word becomes drow Thanks in advance for your...

2. Shell Programming and Scripting

Meaning

Please let me know the meaning for the below statements in shell scripting. 1) exit -99 -------------------------------- 2) set prgdir = `pwd` set runFlag = runFlag:FALSE ------------------------------------- 3) if (-f $prgdir/maillst.eml) then set distEmail = `cat $prgdir/maillst.eml`...

3. UNIX for Dummies Questions & Answers

meaning of <<!

Hi all, I wanna know the meaning of the last word "<<! " sudo su - user <<! please help on this !!!!

4. Shell Programming and Scripting

^$$ meaning

Hi , Can anyone please let me know whta the follwoing piece of code for ScriptName=${0##*/} if pgrep -f "$ScriptName" | grep -v "^$$\$" ; then echo `date`": Sctipt $ScritName is already runnig" exit fi Thnx a lot in advance Please use code tags when posting data and code...

5. Shell Programming and Scripting

meaning of #!/bin/ksh -p

:b:HI Friends, Can you help me understand -p option with /usr/bin/ksh shell interpreter ? Thanks, Panditt

6. Shell Programming and Scripting

meaning of !*

can someone please tell what !* means in shell syntax. Regards,

7. Shell Programming and Scripting

What is the meaning of $_

Hi, Can somebody tell the usage of "$_" cd $_ ? and ls $_ ?

8. Shell Programming and Scripting

help me out in letting me know the meaning of sh, ksh, bash

Could you please help me out in letting me know the meaning of #!/bin/sh #!/bin/ksh #!/bin/bash what the difference between all these :eek:.... Also please view the below mention script, could you please explain whats this script doing #!/bin/bash t=100 echo $t echo $tea echo...

9. UNIX for Dummies Questions & Answers

Use and meaning of $*

Can someone explain the use and meaning of "$*" expression.

10. Shell Programming and Scripting

what is the meaning here?

#!/bin/sh $ORACLE_HOME/bin/sqlplus -S $orauserid/$orapasswd@$oradb << _TMP alter session set nls_date_format = 'YYYYMMDD HH24:MI'; set linesize 100 set pagesize 400 ok the above is part of a script..i just wanna know what does sqlplus -S means?? as in why we need to insert the -S behind?

Shell Programming and Scripting