10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello All,
Could you please do help me here as I would like to perform parameter expansion in shell over a parameter expansion.
Let's say I have following variable.
path="/var/talend/nat/cdc"
Now to get only nat I could do following.
path1="${path%/*}"
path1="${path1##*/}"
Here... (8 Replies)
Discussion started by: RavinderSingh13
8 Replies
2. Shell Programming and Scripting
(Using Bash 4.4)
When I write something like dir="~/dox"
ls $dir then I get the message that the directory '~/docs' does not exist. I understand that the tilde is not expanded at the time of the above assignment because of the quotes. But why is it not expanded at the time when the ls command is... (2 Replies)
Discussion started by: Ralph
2 Replies
3. Shell Programming and Scripting
Hello.
I cannot write a command without using eval.
Any help is welcome
Note 1 : What does the function SOMETHING has no importance.
Note 2 : What does the command find has no importance.
It is an expansion variable problem : where to put or or or anythings else
What works (FILTRE_1... (8 Replies)
Discussion started by: jcdole
8 Replies
4. Shell Programming and Scripting
Heyas
Recently i wanted to help someone with an awk script, but the end-script didnt work as expected.
He wanted, if HOME was empty, to get the HOME of the current USER from /etc/passwd.
At first i tried hardcoded with root:
awk -F: '/^root/ {print $6}' /etc/passwd
As that worked, i've... (4 Replies)
Discussion started by: sea
4 Replies
5. Shell Programming and Scripting
Hi,
I'm trying to figure out whether some files exist. Locations of those file are stored in a plain text file called temp.txt in this way:
All environment variables ($LIB_HOME and $ORACLE_HOME) have been set using export command.
Then I do:
while read line; do ] && echo "OK ==> $line" ||... (6 Replies)
Discussion started by: AlbertGM
6 Replies
6. UNIX for Dummies Questions & Answers
I have a bunch of files which I need to transfer to another location... and some of these I need to skip.
For e.g. let us say the files are:
cust_abc.dat
cust_xyz.dat
cust_def.dat
and I only want to move the first two.
I want to do something like:
cp cust_.dat <target>
... (1 Reply)
Discussion started by: jawsnnn
1 Replies
7. Shell Programming and Scripting
Say you have this numeric variable that can be set by the user but you never want it to leave a certain range when it gets printed. How could you use parameter expansion such that it will never expand outside of that boundary? Thanks
---------- Post updated at 11:09 PM ---------- Previous update... (3 Replies)
Discussion started by: stevenswj
3 Replies
8. Shell Programming and Scripting
Hi ,
could anyone help me out with this problem.
sample.txt has this content :
u001- this is used for project1 ||
u002- this is used for p2|| not to be printed
u003- this is used
for project3 ||
u004- this is
used for p4 ||
u005- this is used for project5 ||
u006- this is used for p6... (9 Replies)
Discussion started by: Balaji PK
9 Replies
9. UNIX for Dummies Questions & Answers
Hi there,
Can anyone explain me the following behavior?
hfserver:~# ls -l /home/cronlogs/mysqldump*
-rw-r--r-- 1 root root 10658464 2009-01-18 03:00 /home/cronlogs/mysqldump_20090118030002
-rw-r--r-- 1 root root 10651035 2009-01-19 03:00 /home/cronlogs/mysqldump_20090119030001
-rw-r--r-- 1... (4 Replies)
Discussion started by: chebarbudo
4 Replies
10. Shell Programming and Scripting
Hi,
I have a script that at one point prints to a file as follows:
printf -- $2 > ~/.mydir/$1
The idea is to print to a hidden directory .mydir in my home directory. I've already sanitized the inputs and $1 is in the format path1/path2/filename and $2 is some user input.
When I run this... (2 Replies)
Discussion started by: Rledley
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PASSWD(1SSL) OpenSSL PASSWD(1SSL)
NAME
openssl-passwd, passwd - compute password hashes
SYNOPSIS
openssl passwd [-help] [-crypt] [-1] [-apr1] [-aixmd5] [-5] [-6] [-salt string] [-in file] [-stdin] [-noverify] [-quiet] [-table] [-rand
file...] [-writerand file] {password}
DESCRIPTION
The passwd command computes the hash of a password typed at run-time or the hash of each password in a list. The password list is taken
from the named file for option -in file, from stdin for option -stdin, or from the command line, or from the terminal otherwise. The Unix
standard algorithm crypt and the MD5-based BSD password algorithm 1, its Apache variant apr1, and its AIX variant are available.
OPTIONS
-help
Print out a usage message.
-crypt
Use the crypt algorithm (default).
-1 Use the MD5 based BSD password algorithm 1.
-apr1
Use the apr1 algorithm (Apache variant of the BSD algorithm).
-aixmd5
Use the AIX MD5 algorithm (AIX variant of the BSD algorithm).
-5
-6 Use the SHA256 / SHA512 based algorithms defined by Ulrich Drepper. See <https://www.akkadia.org/drepper/SHA-crypt.txt>.
-salt string
Use the specified salt. When reading a password from the terminal, this implies -noverify.
-in file
Read passwords from file.
-stdin
Read passwords from stdin.
-noverify
Don't verify when reading a password from the terminal.
-quiet
Don't output warnings when passwords given at the command line are truncated.
-table
In the output list, prepend the cleartext password and a TAB character to each password hash.
-rand file...
A file or files containing random data used to seed the random number generator. Multiple files can be specified separated by an OS-
dependent character. The separator is ; for MS-Windows, , for OpenVMS, and : for all others.
[-writerand file]
Writes random data to the specified file upon exit. This can be used with a subsequent -rand flag.
EXAMPLES
% openssl passwd -crypt -salt xx password
xxj31ZMTZzkVA
% openssl passwd -1 -salt xxxxxxxx password
$1$xxxxxxxx$UYCIxa628.9qXjpQCjM4a.
% openssl passwd -apr1 -salt xxxxxxxx password
$apr1$xxxxxxxx$dxHfLAsjHkDRmG83UXe8K0
% openssl passwd -aixmd5 -salt xxxxxxxx password
xxxxxxxx$8Oaipk/GPKhC64w/YVeFD/
COPYRIGHT
Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a
copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.
1.1.1a 2018-12-18 PASSWD(1SSL)