hello
whats the difference between excuting a shell script as
a)sh myscript.sh
b). ./myscript.sh
i noticed that my shell script works fine when i run it as . ./myscript
.sh but fails when i run it as sh myscript.sh could anybody explain why.
the shell script is very simple
... (9 Replies)
I have the following script
awk '$1 ~ /^*+/ {
s += $NF;
m++
}
END {
print NR, m, s
}
and I use it to get results from the following file
A4792 4
COMP9021 5
K9 7
ABC 8
924 1
R2D2 3 (8 Replies)
I have a script that has defined a log file like this.
The name of the script is verify.sh
Inside the script there is some thing like this.
LOG=/usr/verify
TDATE=`date "+%m%d%y"$$`
LOGFILE=$LOG.$TDATE.
and inside the script it has been written as
echo "This is to verify" | tee -a... (2 Replies)
Hi
All,
Can anybody explain what this script is doing?
#!/bin/sh
who | cut -d " " -f1 | sort -u > userlist1
while true ; do
sleep 60
who | cut -d" " -f1 | sort -u >userlist2
for username in `cat userlist1` ; do
if ! grep "^$username$" userlist2 > /dev/null ; then
echo... (0 Replies)
Guys,
was wondering what the meaning of the below bit is ?
awk -F ' ' '{print $1 " " $2 ;}' $TEMPFILE | (rm -f $TEMPFILE; sed 's/$/ '"$box"'/g' > $TEMPFILE)
Can anyone explain this in detail? what is the significance of rm -f $TEMPFILE here? What all IO/buffering happens here ?How the... (0 Replies)
Hello,
I have seen this script on this site. I understand most of it. However I am a bit stuck on the part in red. It appears to be expanding
for file in *.zip
do
zipdir=${file%.*}
mkdir $zipdir || echo "unable to create $zipdir"
cp $file $zipdir || echo "unable to copy $file"... (3 Replies)
#script
fileused=test.txt
hostname=test.dis.com
ftp $hostname <<-! > $fileused.err 2>&1
put file.txt /usr/text.txt
bye
!
kindly the above script the one marked as Bold and underlined as the above i am declaring the new variable as filename ,But when i used i had used as $fileused.err... (1 Reply)
The following script will create a directory in a directory and will go on as many times as the number you will give in.
I am trying to find out how it works ... can someone please help me with that?
#!/bin/sh
#create a variable and set it to 1
n=1
#start a loop as... (3 Replies)
Hello Guys,
can someone help explain the script below for me? I will really appreciate it.
vi db_script
#!/bin/sh
echo .cron job run on.`date`> cronjob.txt
df -h >> cronjob.txt
echo welcome to home (2 Replies)
Hi
My friend wrote this particular script and won't tell me what it does, and when I run it I don't understand it.
What does the entire script do with specifics please.
Thanks
Bob
#!/bin/bash
current=0
while ; do
if ; then
echo ${current}
current=$((${current}+1))
fi
done (1 Reply)
Discussion started by: shadowknight777
1 Replies
LEARN ABOUT REDHAT
return
return(n) Tcl Built-In Commands return(n)
__________________________________________________________________________________________________________________________________________________NAME
return - Return from a procedure
SYNOPSIS
return ?-code code? ?-errorinfo info? ?-errorcode code? ?string?
_________________________________________________________________DESCRIPTION
Return immediately from the current procedure (or top-level command or source command), with string as the return value. If string is not
specified then an empty string will be returned as result.
EXCEPTIONAL RETURNS
In the usual case where the -code option isn't specified the procedure will return normally (its completion code will be TCL_OK). However,
the -code option may be used to generate an exceptional return from the procedure. Code may have any of the following values:
ok Normal return: same as if the option is omitted.
error Error return: same as if the error command were used to terminate the procedure, except for handling of errorInfo and errorCode
variables (see below).
return The current procedure will return with a completion code of TCL_RETURN, so that the procedure that invoked it will return also.
break The current procedure will return with a completion code of TCL_BREAK, which will terminate the innermost nested loop in the code
that invoked the current procedure.
continue The current procedure will return with a completion code of TCL_CONTINUE, which will terminate the current iteration of the
innermost nested loop in the code that invoked the current procedure.
value Value must be an integer; it will be returned as the completion code for the current procedure.
The -code option is rarely used. It is provided so that procedures that implement new control structures can reflect exceptional condi-
tions back to their callers.
Two additional options, -errorinfo and -errorcode, may be used to provide additional information during error returns. These options are
ignored unless code is error.
The -errorinfo option specifies an initial stack trace for the errorInfo variable; if it is not specified then the stack trace left in
errorInfo will include the call to the procedure and higher levels on the stack but it will not include any information about the context
of the error within the procedure. Typically the info value is supplied from the value left in errorInfo after a catch command trapped an
error within the procedure.
If the -errorcode option is specified then code provides a value for the errorCode variable. If the option is not specified then errorCode
will default to NONE.
SEE ALSO
break(n), continue(n), error(n), proc(n)
KEYWORDS
break, continue, error, procedure, return
Tcl 7.0 return(n)