02-09-2007
I don't know unix very well. Plaese explain in details.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello,
Can somebody tell me the differnce between a call of a ksh with the dot :
>. script.ksh
and the call without the dot:
>script.ksh
In my script I have writen a test for the number of parameters:
if
then echo 'Usage : '$0
exit 1
fi
as my script doesn't need any... (3 Replies)
Discussion started by: Cecile
3 Replies
2. UNIX for Dummies Questions & Answers
I want to execute a shell script without ./ symbol.
For example:
./my_script ===== my_script (both of them can execute my script)
both of them are the same as result. (2 Replies)
Discussion started by: mehmetned
2 Replies
3. Shell Programming and Scripting
I have an expect script that interrogates several hundred unix servers for both access and directories therein using "ssh user@host ls -l /path". The combination of host/path are unique but the host may be interrogated multiple times if there are multiple paths to test.
The expect script is run... (2 Replies)
Discussion started by: twk
2 Replies
4. Shell Programming and Scripting
Hi All,
I want to echo a message in case a system is reachable by ping or echo a different message in case it's not reachable.
Sample code i wrote is
ping localhost -n 2 | grep 'ttl' > ping_op; ls ping_op > /dev/null && drReachable=Alive; echo -e `date`: \\t "DR server is reachable" >>... (5 Replies)
Discussion started by: Mr. Zer0
5 Replies
5. Shell Programming and Scripting
hi,
Pls bare with me if this is trivial.
Is it possible to run a korn shell with out specifying the name with its extensiion?
Do i need to make any changes to the script make it work?
Thanks (3 Replies)
Discussion started by: dvah
3 Replies
6. UNIX for Dummies Questions & Answers
Hi
i am using expect module and trying to login using following code.
ssh 127.0.0.1
expect "word:"
send "$password \n"
kindly let me know the login script using expect module (1 Reply)
Discussion started by: esumiba
1 Replies
7. UNIX for Dummies Questions & Answers
Hi
i have a file in which there are three fields
code:
919804199233 404911130003916 357266044991350F
and now i want to add two more fields i.e.
code:
919804199233 404911130003916 357266044991350F ms 123
how can i do it using command line
and if have a file of 100... (8 Replies)
Discussion started by: esumiba
8 Replies
8. Shell Programming and Scripting
Hi
i have a small script like this
$ cat test.sh
#!/usr/bin/sh
name="ram"
echo ${1}
set 1 2 3 4 5 6 7 8 9 0 123 o870
echo $9
echo ${12}
when i am trying to execute like below i am not getting the output
jena samp_perl $ sh test.sh
test.sh: This: not found (12 Replies)
Discussion started by: ragilla
12 Replies
9. Red Hat
hi dudes, i m a new user of RHEL-6. how will i start programming of c / c++ in this environment ? where will i type my code & how will i execute ? are any extra packages needs to be installed ? if yes, from where will i get those packages?
waiting for reply from someone...... (2 Replies)
Discussion started by: Amitcpp50
2 Replies
10. UNIX for Beginners Questions & Answers
How to find a word in a directory which contains many files?
i just want to count how many such words are present in all the files?
This is the code which i tried for a single file
echo "Enter the file name:"
read file
echo "Enter the word to search:"
read word
if
then
echo "The count... (4 Replies)
Discussion started by: Meeran Rizvi
4 Replies
WHICH(1) General Commands Manual WHICH(1)
NAME
which - shows the full path of (shell) commands.
SYNOPSIS
which [options] [--] programname [...]
DESCRIPTION
Which takes one or more arguments. For each of its arguments it prints to stdout the full path of the executables that would have been exe-
cuted when this argument had been entered at the shell prompt. It does this by searching for an executable or script in the directories
listed in the environment variable PATH using the same algorithm as bash(1).
This man page is generated from the file which.texinfo.
OPTIONS
--all, -a
Print all matching executables in PATH, not just the first.
--read-alias, -i
Read aliases from stdin, reporting matching ones on stdout. This is useful in combination with using an alias for which itself. For
example
alias which='alias | which -i'.
--skip-alias
Ignore option `--read-alias', if any. This is useful to explicity search for normal binaries, while using the `--read-alias' option in
an alias or function for which.
--read-functions
Read shell function definitions from stdin, reporting matching ones on stdout. This is useful in combination with using a shell func-
tion for which itself. For example:
which() { declare -f | which --read-functions $@ }
export -f which
--skip-functions
Ignore option `--read-functions', if any. This is useful to explicity search for normal binaries, while using the `--read-functions'
option in an alias or function for which.
--skip-dot
Skip directories in PATH that start with a dot.
--skip-tilde
Skip directories in PATH that start with a tilde and executables which reside in the HOME directory.
--show-dot
If a directory in PATH starts with a dot and a matching executable was found for that path, then print "./programname" rather than the
full path.
--show-tilde
Output a tilde when a directory matches the HOME directory. This option is ignored when which is invoked as root.
--tty-only
Stop processing options on the right if not on tty.
--version,-v,-V
Print version information on standard output then exit successfully.
--help
Print usage information on standard output then exit successfully.
RETURN VALUE
Which returns the number of failed arguments, or -1 when no `programname' was given.
EXAMPLE
The recommended way to use this utility is by adding an alias (C shell) or shell function (Bourne shell) for which like the following:
[ba]sh:
which ()
{
(alias; declare -f) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot $@
}
export -f which
[t]csh:
alias which 'alias | /usr/bin/which --tty-only --read-alias --show-dot --show-tilde'
This will print the readable ~/ and ./ when starting which from your prompt, while still printing the full path when used from a script:
> which q2
~/bin/q2
> echo `which q2`
/home/carlo/bin/q2
BUGS
The HOME directory is determined by looking for the HOME environment variable, which aborts when this variable doesn't exist. Which will
consider two equivalent directories to be different when one of them contains a path with a symbolic link.
AUTHOR
Carlo Wood <carlo@gnu.org>
SEE ALSO
bash(1)
WHICH(1)