Hello experts,
I have a series issue in script that result with bad peformence and I wonder if you can assist me.
For example
I have two files:
File-New, size 15Mb.
File-Old, size 1Mb.
File-New content:
a
b
c
k
File-Old content:
d
f
a
b (0 Replies)
hi, I set the crontab to execute script A every 5 minutes from 9:00 am to 4:00 pm everyday, now at 12:00am I want to run another script if and only if all the previous runs of script A return OK, can anyone tell me how it could be done? thank you very very much! (4 Replies)
hello all
I have long awk function that doing manipulations on text file but when I write the out put to new text file I have carriage return between 2 print commands
How can I avoid this ?
Here is my awk :
echo $f | awk... (1 Reply)
Hi ,
I am new to linux and also also to shell scripting.
I have one shell script which unpacks .tgz file and install software on machine.
When this script runs I want to insert id,filename,description(which will be in readme file),log(which will be in log file) and name of unpacked folder... (1 Reply)
I am running a daemon program that sends texts via a connected mobile phone. I run this daemon via CLI, and it loops a few commands (checking to see if there are any new texts).
It runs perfectly, the problem is, when I leave this to run on my Ubuntu Desktop, and come back to it hours later it... (2 Replies)
Hi All,
I was installed new server M5000 on solaris10. I'am try to connect to server by ssh client (putty) after type user name and password the server take long time to return prompt to me about 30-60 second. any body can suggess me how to do it. (8 Replies)
Does screen command run forever?
Suppose I have following command inserted at my putty shell followed by screen
# screen
# export JAVA_HOME=/usr/java/jdk1.6.0_21
# export ANT_HOME=/usr/ant
# export PATH=$PATH:$JAVA_HOME/bin:$ANT_HOME/bin
# export... (0 Replies)
I have a script like this:
echo "enter filername in lowercase"
read -e filername exec 2>&1
echo "type the start date in format MM/DD/YYYY"
read -e startdate exec 2>&1
echo "enter the end date in format MM/DD/YYYY"
... (2 Replies)
Not sure where the problem is. I can run the script without any issue using the following command.
. /opt/app/scripts/cdc_migration.sh
But it fails with the below error when I try it this way
/opt/app/scripts/cdc_migration.sh
/opt/app/scripts/cdc_migration.sh: line 65: return: can only... (1 Reply)
Discussion started by: svajhala
1 Replies
LEARN ABOUT BSD
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)