while loop perl Post: 302600030

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help with perl while loop

Can anyone tell me why this program won't kick out when the time gets beyond time in the loop? sub showtime { local($format,$military)=@_; ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)=localtime(time); if ((! $military) && ($hour > 12)) {$hour-=12;} ...

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my $i; my $j; for($i=1;$i<=5;$i++) { for($j=$i;$j<5;$j++) { print " "; } print "$i\n"; } But the output i need is 1 12 123 1234 12345 Help me please

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I wrote a script to list all lines in a file with Perl. I am having trouble with the looping part of it. My script is supposed to look at the file and as long as the file is larger than the current line it prints a new line. I am getting an error that won't stop on the while line of my code I...

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While Loop in Perl

Hi All I am reading the file using while loop in Perl someting like while (my $s=<F>){ chomp($s); .. .. .. } What i want to do is after the chomp statement i used some condition, if the condition is met then it should move forward otherwise it should read the new line. How Can it be...

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perl while loop for each

I have the below scenario in perl cd $FIDE_RECEIVE ; # see the files that start with feedmgr.usfed.tips $CycleDate = &fi_get_curr_date('US','NIGHTLY_CYCLE','PROCESS'); head -1 GNM_GEO.DAT.EMBS* |grep -v GNM_GEO.DAT.EMBS | awk '{$4 " " $5}' output for above command :...

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Perl loop until

I have a script that needs to wait on another script to finish. I created a sub routine to check the file for the number 0 but my until statement keeps on going. I tried eq, == and =~ but same thing. my $CHECKING_FILE = 1; do { sleep(5); $CHECKING_FILE = check_file(); ...

LEARN ABOUT CENTOS

grub-render-label

GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME

       grub-render-label - generate a .disk_label for Apple Macs.

SYNOPSIS

       grub-render-label [OPTION...] [OPTIONS]

DESCRIPTION

       Render Apple .disk_label.

       -b, --bgcolor=COLOR
              use COLOR for background

       -c, --color=COLOR
              use COLOR for text

       -f, --font=FILE
              use FILE as font (PF2).

       -i, --input=FILE
              read text from FILE.

       -o, --output=FILE
              set output filename. Default is STDOUT

       -t, --text=STRING
              set the label to render

       -v, --verbose
              print verbose messages.

       -?, --help
              give this help list

       --usage
              give a short usage message

       -V, --version
              print program version

       Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

REPORTING BUGS

       Report bugs to <bug-grub@gnu.org>.

SEE ALSO

       The  full  documentation  for grub-render-label is maintained as a Texinfo manual.  If the info and grub-render-label programs are properly
       installed at your site, the command

              info grub-render-label

       should give you access to the complete manual.

grub-render-label (GRUB) 2.02-2ubuntu8.3                             July 2018                                                GRUB-RENDER-LABEL(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

help with perl while loop

Discussion started by: methos

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for loop in perl

Discussion started by: priyas

3. Shell Programming and Scripting

perl loop keeps getting stuck

Discussion started by: renthead720

4. Shell Programming and Scripting

Perl - pass shell-vars into perl for input loop

Discussion started by: alex_5161