We have Posix-standard and then we have real world - people who has done the shells.
Only in ksh you can use pipe:
Previous zaxxon example include howto read generic one variable:
Previous zaxxon example include howto read more than one variable using bash.
Generic version for more than one variable read:
Hi, I'm doing a script that reads lines from a file and then copy them to another file, if the user wants it.
But I'having problems to get the user selection because when I do the read to ask the user, the script reads the next line of the file.
The script looks like this:
#!/bin/sh
# ... (2 Replies)
I've discovered a very annoying problem in sh:
echo -en "one\ntwo\nthree" | while read VALUE
do
echo "${VALUE}"
done This will print one and two, but not three. The last line is IGNORED because it lacks a newline. This makes it hard to use sh for things like CGI scripting; you have... (6 Replies)
Hello mates:
I met problem with using read() & write(). I m trying to use read twice on client first time is the size of buffer, 2nd time is the buffer. I think I have to, coz I dnot know file size. So, I write twice on server as well -- 1st, filesize; 2nd, buffer.
The problem is, sometimes,... (11 Replies)
Hi,
Can any one please help me with this. Am struggling hard to get a solution.
I am doing telnet through a C program and getting the stdout file descriptor of the remote machine to pipe.
read() function is getting data, But whenl it receives SOH character ie. ^A ( Start of heading = Console... (2 Replies)
Dear all,
I have this archive: cat file.txt
archive test 02 sequence 03 02length 52
archive test 02 sequence 04 02length 52
archive test 02 sequence 05 02length 52
teste arquivo 06 sequencia 08 06 length 54
teste arquivo 06 sequencia 09 ... (8 Replies)
Hey, guys!
Trying to research this is such a pain since the read command itself is a common word. Try searching "unix OR linux read command examples" or using the command substitution keyword. :eek:
So, I wanted to use a command statement similar to the following.
This is kinda taken... (2 Replies)
Hi everybody, I am new to shell script. Please help me with this problem.
I have a file test.txt with the content like this:
I have a shell script test.sh like this
#!/bin/sh
while read line
do
echo $line >> out.txt
done < test.txt
out.txt is expected to have the same content... (10 Replies)
Hi,
I am facing issues with the below:
I have a lookup file say lookup.lkp.This lookup.lkp file contains strings delimited by comma(,).
Now i want to read this command from file and execute it.
So my code below is :
Contents in the lookup.lkp file is :
c_e,m,a,`cd $BOX | ls cef_*|tail... (7 Replies)
Hi, :)
I tried to make of "line returns" with "\n" :
read -p $'Do you really want append this line in '$CONFIG_FILE''\n'IP CLIENT: '$IP_INPUT' - PATH: '$PATH_INPUT''\n'y/n ?:' CONFIRM_INPUT
But it didn't work, please anyone have an idea? :b: (2 Replies)
Discussion started by: Arnaudh78
2 Replies
LEARN ABOUT XFREE86
exit
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)