please explain the below Post: 302181804

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1. Shell Programming and Scripting

please explain this

zsh 4.3.4% cat file ACFCFACCACARCSHFARCVJVASTVAJFTVAJVGHBAJ zsh 4.3.4% cat file1 A C F R zsh 4.3.4% <file1 while read;do printf "%s=%d\n" "$REPLY" "${#$(<file)//}";done A=9 C=7 F=4 R=2 That was the previous post. But , can anybody can explain me in detail about this line zsh...

2. Shell Programming and Scripting

Please can any one explain this ${0##/}

I did not understand what is ${0##/} PGM=${0##/} TMP=/tmp/${PGM}.$$ Please explain me.

3. AIX

can anyone explain this?

this is the mksys b script.... can anyone explain .. what # and 1 in if condition this is the first line of the script... it is not from middle of the script.... if then echo "Not enough parameters, need a client name for mksysb" Usage="Usage: $0 <client name>" ...

4. UNIX for Dummies Questions & Answers

Please explain this

if then echo "Syntax: $0 <sid> <COLD/HOT> <DEST>" exit fi if --------------what does this mean??? echo "Syntax: $0 <sid> <COLD/HOT> <DEST>"---pls explain this as well

5. Shell Programming and Scripting

can any one explain this example

hi all i have an example i want one help me to understand cause i tried to test it but almost fail and i don't know how can i solve this problem " the main idea to read from two files and replace something from one to another " but i don't understand why it fail all time $ cat main.txt...

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Could anyone help explain this?

1. The problem statement, all variables and given/known data: I have a retake assignment to complete for my computer networks and OS class. This isn't really my area, had I known last year I could have swapped it for a different module I would have done so. I'm determined to get through it...

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Explain $# please

I'm trying to follow a script and I see it begins with this: if ; then if ; then print "blah $0 blah blah " exit fi fi What does $# mean? I found out that $1 refers to the shell environment and the last argument that was entered or passed in the previous command. I couldn't find $#...

8. Shell Programming and Scripting

anyone can explain this?

why the case 2 will happen ? , ' should stop the history substitution ,shouldn't it? case 1 # echo "123"|sed '/123/!d' 123 case 2 # echo "123 > 456 > 1 > "|sed '/123/!d' -bash: !d': event not found case 3 # echo "123 > 456 > 12 > "|sed '/123/'\!d 123 # bash --version

9. Shell Programming and Scripting

Can someone explain this for me?

Can someone do me a favour and explain the following for me: ((r=$RANDOM%$n+1)) I know what $RANDOM does but what is % sign and what does it do with %$n+1?

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How I can explain this?

Hi friends! I'm learning UNIX and I have a small question. Working with Shell, i put the name of one executable (in c language) + one number and it says this: $ gcc misterioso_4.c $ ./misterioso_4 6 got: , I can not find an answer in the manual because I havent applied any variable....

LEARN ABOUT OSF1

strclean

strclean(8)						      System Manager's Manual						       strclean(8)

NAME

       strclean - Removes outdated STREAMS error log files

SYNOPSIS

       /usr/sbin/strclean [-d logdir] [-a age]

FLAGS

       Specifies  a  maximum  age  in  days for the STREAMS error log files if this not the default age of 3.  The value of age must be an integer
       greater than or less than 3.  Specifies a directory for the location of the STREAMS error log files to  be  removed  if	this  is  not  the
       default directory /var/adm/streams.

DESCRIPTION

       The  strclean  command cleans the STREAMS error logger directory of log files (error.mm-dd) that contain error messages sent by the STREAMS
       log driver (strlog).  If no other directory is specified (the logdir argument), the command removes error log files in the /var/adm/streams
       directory.  If no other age is specified (the age argument), the command removes error log files that have not been modified in 3 days.

       The strclean command is executed by the cron daemon on a periodic basis.

EXAMPLES

       To remove the day-old error log files from a directory called /tmp/streams, enter: strclean -d /tmp/streams -a 1

FILES

       One or more error log file or files on which strclean operates.	The mm.dd in the filename indicates the month and day of the messages con-
       tained in the file.

RELATED INFORMATION

       Commands: strerr(8), cron(8).

       Interfaces: strlog(7).  delim off

																       strclean(8)

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please explain this

Discussion started by: dummy_needhelp

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Please can any one explain this ${0##/}

Discussion started by: gadege

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can anyone explain this?

Discussion started by: honeym210

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Please explain this

Discussion started by: appsdba.nitin