how to use if-loop in bourne shell with multiple conditions like follows
if
then
commands
fi
it gives me an error
test: ] missing
then i put
if ]
it gives me an error
[[ not found
kindly i need the syntex for the bourne shell (5 Replies)
Hi,
I am stuck while developing a shell sub-routine which checks the log file for "success" or "failure". The subroutine reads the log file and checks for key word "success", if found it set the variable (found=1). It returns success or failure based on this variable.
My problem is, I can... (2 Replies)
If I set a variable within a while-read loop, sometimes it's local to the loop, sometimes it's global, depending on how the loop is set up. I'm testing this on a Debian Lenny system using both bash and dash with the same results.
For example:
# Pipe command into while-read loop
count=
ls -1... (2 Replies)
hi all,
i'm using the following script,
Status=1
Function_do ()
{
while read line;
do
if ; then
#echo $line
if ; then
Status=0
echo " LINKINK ERROR "
fi
fi
done < ldd.log
}
Function_do (4 Replies)
Hello Everyone....
I am trying to print a number sequence in following format using for loop.
I am using a bourne shell. I tried following for loop condition but it is bash syntax.
for (( i=0; i<=5; i++ ))
It is giving syntax error.
Kindly help with the syntax of "for"... (7 Replies)
hi,
I am trying to assign a value through 'read' and all works well until I have a space in the in putted value, for the life of me I cant figure out how to escape this. :wall:
Any ideas?
#!/bin/sh
ask_question() {
question_text="${1}";
question_answer="";
... (2 Replies)
for (( i=1; i<=3; i++ )); do
for (( j=1; j<=3; j++ )); do
for (( k=1; k<=3; k++ )); do
echo $i$j$k
done
done
done
Will the above code work on a BOURNE shell?
As far as my understanding is, if I am writing the above code in a file..say lol.sh and then running it through the terminal using... (7 Replies)
Hello,
I am trying to write a shell script that maintains the health of the passwd file. The goal is to check for duplicate usernames, UID's etc. I am able to find and sort out the UID and login names via awk (which I would like to use), but I can't figure out how to save the record field into a... (1 Reply)
I have a loop with cases
I am working on Bourne shell
for file in *.${Today}*.csv *.${Today}*.txt\
do
case ${file} in
sun_detail)
do something
;;
sum)
do something
;;
mod)
do something
;;
*)
do something
;; (5 Replies)
Cope sample1: test.sh
i=0
echo " Outside loop i = $i "
while
do
i=$(( $i + 1))
echo "Inside loop i = $i "
done
echo " Out of loop i is : $i "
When run output :
Outside loop i = 0
Inside loop i = 1
Inside loop i = 2
Inside loop i = 3
Inside loop i = 4
Inside loop i = 5
Inside... (8 Replies)
Discussion started by: Adarshreddy01
8 Replies
LEARN ABOUT SUSE
read
read(n) Tcl Built-In Commands read(n)
__________________________________________________________________________________________________________________________________________________NAME
read - Read from a channel
SYNOPSIS
read ?-nonewline? channelId
read channelId numChars
_________________________________________________________________DESCRIPTION
In the first form, the read command reads all of the data from channelId up to the end of the file. If the -nonewline switch is specified
then the last character of the file is discarded if it is a newline. In the second form, the extra argument specifies how many characters
to read. Exactly that many characters will be read and returned, unless there are fewer than numChars left in the file; in this case all
the remaining characters are returned. If the channel is configured to use a multi-byte encoding, then the number of characters read may
not be the same as the number of bytes read.
ChannelId must be an identifier for an open channel such as the Tcl standard input channel (stdin), the return value from an invocation of
open or socket, or the result of a channel creation command provided by a Tcl extension. The channel must have been opened for input.
If channelId is in nonblocking mode, the command may not read as many characters as requested: once all available input has been read, the
command will return the data that is available rather than blocking for more input. If the channel is configured to use a multi-byte
encoding, then there may actually be some bytes remaining in the internal buffers that do not form a complete character. These bytes will
not be returned until a complete character is available or end-of-file is reached. The -nonewline switch is ignored if the command returns
before reaching the end of the file.
Read translates end-of-line sequences in the input into newline characters according to the -translation option for the channel. See the
fconfigure manual entry for a discussion on ways in which fconfigure will alter input.
USE WITH SERIAL PORTS
For most applications a channel connected to a serial port should be configured to be nonblocking: fconfigure channelId -blocking 0. Then
read behaves much like described above. Care must be taken when using read on blocking serial ports:
read channelId numChars
In this form read blocks until numChars have been received from the serial port.
read channelId
In this form read blocks until the reception of the end-of-file character, see fconfigure -eofchar. If there no end-of-file charac-
ter has been configured for the channel, then read will block forever.
EXAMPLE
This example code reads a file all at once, and splits it into a list, with each line in the file corresponding to an element in the list:
set fl [open /proc/meminfo]
set data [read $fl]
close $fl
set lines [split $data
]
SEE ALSO
file(n), eof(n), fblocked(n), fconfigure(n), Tcl_StandardChannels(3)KEYWORDS
blocking, channel, end of line, end of file, nonblocking, read, translation, encoding
Tcl 8.1 read(n)