The reason the [ and ] characters have be set apart is that they are actually commands in terms of how the shell interprets them. Like awk or find.
For example on most systems if you use ls to list files in your /bin directory
You will see a file that is named [ . Weird, I know, but it is a command and needs spaces around it like any other self-respecting word.
Ok, i've been messing around in debian the past few days, setting up programs like subversion, mysql and logrotate. The purpose of this script is to use subversion to backup the binary logs. It runs in the cron every 2 hours or so (although I can't get my script to run properly atm, which is why... (1 Reply)
Hi all,
I am using the below given sqlplus command in my unix script to invoke a stored procedure which returns a value .It works fine.
RET_CODE=$(/opt/oracle/product/10.2.0.4.CL/bin/sqlplus -S $USER/$PASSWD@$DB_NAME <<EOF
EXEC MY_PKG.MY_SP (:COUNT);
PRINT COUNT;
commit;
... (6 Replies)
The below script gives error: Missing ]
#!/bin/csh
set MAX=15
set PATTERN='dtsession'
set NUM=`ps -eaf | grep -c $PATTERN`
echo "No of dtsession = "$NUM
if
then
echo 'Quota exceeded permissible limit'
echo 'sending mail...............'
mail hiten.r.chauhan@gmail.com<<EOF
... (2 Replies)
If file exists then do stuff else do nothing...
#! /bin/sh
if
then
rm /home/dudemgnt/public_html/fileserver/Checks/Daily/RefundChecksDaily.csv
cat /home/dudemgnt/public_html/fileserver/Checks/Daily/RefundChecksDaily*.txt|sed 's/\t/","/g;s/^/"/;s/$/"/;s/\n//g' >... (4 Replies)
Hi,
I'm new on this forum. I'm working on Solaris 11 (Express Edition) and I must install some programm created only for RedHat system (I don't want to buy or download RedHat). So I search for this tools and I find a working script for Solaris 9 and 10, but I need that for Solaris 11. So I search... (1 Reply)
How to use Mailx command in unix shell script, its throwing below error
#!/bin/ksh
let x=3
If ; then
mailx -s “ $x is greater than 2” example@gmail.com << EOF
This is the message body
EOF
fi
its throwing error as syntax error at EOF... (10 Replies)
I am trying to run a unix script in my home directory.Snippet below
echo "`date '+%Y%m%d_%H%M%S'` Getting ProductList.dat"
if ( -f $DIR/ProductList.dat) then
cp $DIR/ProductList.dat MigratedProductList.dat
else
echo "`date '+%Y%m%d_%H%M%S'`ProductList.dat does not exist; Processing... (4 Replies)
Dear All members,
i have some trouble here, i want to ask your help. The case is:
I have some data, it's like:
-ABCD1234
-ABCD1235
-ABCD1237
-BCDE1111
-BCDE1112
-BCDE1114
there is some missing data's sequence (the format is: ABCD = name 1234 = sequence).
I want to print the... (2 Replies)
Hello All,
I'm working on one Unix shell sript that will actually extract a column data from Oracle table using sqlplus and writes onto a file. I'm getting this error when executing the shell script:
rpt.ksh: ^JScott: not found
Below is the code in the shell script:
`sqlplus -s... (1 Reply)
I have no idea how to write ksh script, but i'm really in need of help with this. I using fedora 30 and in attempt of runnig attached script i getting those errors, i solved first error by removing excess bracket, but i do not know what should i do with other. Pls sorry for trash post. (8 Replies)
Discussion started by: NullPtr
8 Replies
LEARN ABOUT ULTRIX
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)