I was told that it's a Bad Idea (especially for root ) to Add To the Variable $PATH in unix the ":." (dot),
In order to execute programs in my current directory without typing ./program
For example: PATH=$PATH:$HOME/bin:.
Does someone know why is it a Bad Idea?
Simply because you may have something in your CWD that is the same name as a Unix command. For example (an extreme case I know), imagine you had this as a script called ls.
now imagine running that as root, from roots' $HOME
Hi,
When I try to run a script with ". "(dot space) in my home, it gives me error ".: Permission denied".
Any explanation for this behaviour?
Thanks in advance,
-Ashish (3 Replies)
Hallo,
i need a Prompting read in my script:
read -p "Enter your command: " command
But i always get this Error:
-p: is not an identifier
When I run these in c-shell i get this error
/usr/bin/read: read: bad option(s)
How can I use a Prompt in the read command? (9 Replies)
I had the idea come into my head that it would be good to have a single command that gave file type, file size, last modification date, and owner/group information, like what one would see in a GUI "Properties" dialog, but all in a terminal window. In my opinion, these statistics about a file... (5 Replies)
Hi
I have a "set" command which ends with a "." (dot), for example:
set `grep "\<${pnum}\>" /tstmp/data.txt |sed 's/#//'` .
Can somebody help me to understand the purpose of this "set" and "." combination?
The problem is that this command does not produce the same result when run on AIX... (2 Replies)
hello,
I am writting a regular expression that intend to match any tunnel or serial interface but it doesn't mtach any serial sub-interface.
For example, statement should match "Tunnel3" or "Serial0/1" but shouldn't match "Serial0\1.1" (doesn't include dot ".")
I tried the following but... (3 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
If I enter (simplified):
find . -printf "%p\n"
then all files in the output are prepended by a "." like
./local/share/test23.log
How can achieve that
a.) the leading "./" is omitted
and/or
b.) the full path to the current directory is inserted (enclosed by brackets and a blank)... (1 Reply)
Hi,
I'm dealing with an issue and losing a lot of hours figuring out how i would solve this.
I have an input file which looks like this:
('BLABLA +200-GRS','Serviço ','TarifaçãoServiço','wap.bla.us.0000000121',2985,0,55,' de conversão em escada','Dia','Domingos')
('BLABLA +200-GRR','Serviço... (6 Replies)
Hello.
Following recommendations for one of my threads, this is working perfectly :
#!/bin/bash
CNT=$( grep -c -e "some text 1" -e "some text 2" -e "some text 3" "/tmp/log_file.txt" )
Now I need a grep success for some thing like :
#!/bin/bash
CNT=$( grep -c -e "some text_1... (4 Replies)
These three finds worked as expected:
$ find . -iname "*.PDF"
$ find . -iname "*.PDF" \( ! -name "*_nobackup.*" \)
$ find . -path "*_nobackup*" -prune -iname "*.PDF"
They all returned the match:
./folder/file.pdf
:b:
This find returned no matches:
$ find . -path "*_nobackup*" -prune... (3 Replies)
Discussion started by: wolfv
3 Replies
LEARN ABOUT SUSE
which
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)