05-29-2008
It's not really clear that the backticks are superfluous. If each of those commands in backticks prints something which can be interpreted as a command, that command will be executed. (I'd be surprised, but that's what the script means. If it's incorrect, then posting a corrected script would be a good first step; porting erroneous code doesn't make much sense.)
If the script is indeed correct, it would help immensely to know what those commands in backticks print, and what the purpose of this script is. (Also, porting it to Perl seems misdirected to say the least, as it's using some of the most powerful and unique features of the shell.)
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I need help with a perl parsing script. I have some error logs on a windows machine that I need to parse from a text file, but I know nothing about perl. I usually run this bash script on my linux box and it does just what I need. How would I do the same thing with perl and port it to my windows... (2 Replies)
Discussion started by: cstovall
2 Replies
2. Shell Programming and Scripting
I guess the subject asks it all, but I am wondering (before I go and code a COBOL module) if conversion of regular ASCII data to COMP-3 is possible on a UNIX environment (AIX 5.1)? Any help would be appreciated! Thanks, Dave (13 Replies)
Discussion started by: dfran1972
13 Replies
3. UNIX for Dummies Questions & Answers
Does anyone know how to convert this bash shell script to perl?
for i in `ls -l *pgp`
do
`usr/bin/gpg --passphrase-fd 0 $i < .sunspot`
done
Thanks! Any help would be appreciated. I'm new to Linux and perl. (4 Replies)
Discussion started by: freak
4 Replies
4. Shell Programming and Scripting
Hello All. I am very new to Linux and I am currently interning. I have been working on a project for 2 weeks now and I have had no success. I have to convert bash shell into perl to decrypt and store files. Here is the code in Linux and Bash. Any help would be greatly appreciated.
$... (0 Replies)
Discussion started by: freak
0 Replies
5. Shell Programming and Scripting
Hi everyone,
I have a Linux OS in my PC (older version 9). Its default shell is bash. Whenever I try to run some Perl program it throws error ! eg, if I run this simple PERL program ,
#!/usr/bin/perl
printf "\lHello \n";
$var=3 ;
printf $var;
@list=(1,2,3);
printf "@list";... (6 Replies)
Discussion started by: adc22
6 Replies
6. Shell Programming and Scripting
Hai ! I am doing a research on Bioinformatics and a part of the code in perl have to be converted to shell scripting. I am new to shell programming. Pls. kindly help me to convert this code to shell script though it is somewhat lengthy.
PLS KINDLY HELP ME. THANKS IN ADVANCE.
my @FreeEnergy =... (1 Reply)
Discussion started by: kswapnadevi
1 Replies
7. Shell Programming and Scripting
This is the ldf file
dn: sdcsmsisdn=1000000049,sdcsDatabase=subscriberCache,dc=example,dc=com
objectClass: sdcsSubscriber
objectClass: top
postalCode: 29600
sdcsServiceLevel: 10
sdcsCustomerType: 14
givenName: Adelia
sdcsBlackListAll: FALSE
sdcsOwnerType: T-Mobile
sn: Actionteam... (1 Reply)
Discussion started by: LinuxFriend
1 Replies
8. Shell Programming and Scripting
Please tell me how to convert below program from shell script to perl. Same commands need to use in shutdown, just need program help for startup.
export ORACLE_BASE=/home/oracle1
lsnrctl start lndb1
sqlplus '/ as sysdba'
startup; (2 Replies)
Discussion started by: learnbash
2 Replies
9. Shell Programming and Scripting
declare -i DEFINT=1
declare -i DEFDELAY=1
declare -i timeout=DEFTOUT
declare -i interval=DEFINT
declare -i delay=DEFDELAY
if (($# == 0 || interval <= 0)); then
printUsage
exit 1
fi
(
((t = timeout))
while ((t > 0)); do
sleep $interval
kill -0 $$ ||... (5 Replies)
Discussion started by: SkySmart
5 Replies
10. Shell Programming and Scripting
Hi Guys
I am having a perl script that fetches exclude list from a unix client and I trying it to convert it to shell script but I am having issues please help me...
#!/usr/bin/perl
use strict;
use warnings;
use Getopt::Std;
# To turn on debuging (i.e. more information) specify... (29 Replies)
Discussion started by: Pawan Ramnani
29 Replies
LEARN ABOUT FREEBSD
return
exit(1) User Commands exit(1)
NAME
exit, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps
SYNOPSIS
sh
exit [n]
return [n]
csh
exit [ ( expr )]
goto label
ksh
*exit [n]
*return [n]
DESCRIPTION
sh
exit will cause the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of
the last command executed (an EOF will also cause the shell to exit.)
return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command exe-
cuted.
csh
exit will cause the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the
expression expr.
The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches
for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to
jump to a label that occurs between a while or for built-in command and its corresponding end.
ksh
exit will cause the calling shell or shell script to exit with the exit status specified by n. The value will be the least significant 8
bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing
a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file will also cause the shell to exit
except for a shell which has the ignoreeof option (See set below) turned on.
return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value will be the
least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return
is invoked while not in a function or a '.' script, then it is the same as an exit.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
break(1), csh(1), ksh(1), sh(1), attributes(5)
SunOS 5.10 15 Apr 1994 exit(1)