${parameter##word}
The word is expanded to produce a pattern just as in pathname expansion. If
the pattern matches the beginning of the value of parameter, then the result
of the expansion is the expanded value of parameter with the shortest match-
ing pattern (the ``#'' case) or the longest matching pattern (the ``##''
case) deleted. If parameter is @ or *, the pattern removal operation is
applied to each positional parameter in turn, and the expansion is the
resultant list. If parameter is an array variable subscripted with @ or *,
the pattern removal operation is applied to each member of the array in
turn, and the expansion is the resultant list.
In Unix, How to find the file when i have the matter by subdirectory wise.
I have used the 'grep' command, but i can't get it, can anyone give the command of matter searched by subdirectorywise.
:confused: (5 Replies)
I'm running a select statmenet from shell script, sometimes the result for the select is no rows selected. my question is, can I find a command in the shell asking about the result of the select and if the result is no data found print any msg I want instead of just writting no rows selected.... (3 Replies)
Hello, i am doing a project for school and i cannot figure out whats wrong with my 2 programs they dont seem to work at all.
the first program is called isprime and naturally it checks to see if hte number is prime or not
here is my code:
#!/usr/bin/bash
num=$1
echo you typed
if ... (2 Replies)
Hi All,
I am having this problem and I can't find a decent answer anywere.
I'am trying to perform multiple command in a shell script.
For example
mkdir test
tar cvzf test.tar.gz test/
rmdir test
The problem I get is that if I run this file as a cronjob, with a big "test" folder; the... (4 Replies)
when i run a shell script i have to type
./my_prog
and the first line of my_prog has to have
#!/usr/bin/env bash
how do i change it to i only have to type my_prog to run it? (4 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Write a Bourne shell script which:
• Has one command line argument.
• If the command line argument is a... (5 Replies)
Hi,
I have this piece of code but I can not understand it in details and it is difficult to find in net. What is the function of the $, type, d and prefix here?
This script wants to get each file from their directory.
Thanks in advance.
for i in $(find /file directory/ -type d | grep... (4 Replies)
Hallo everyone,
I have this code:
DBNAME=DB_001 EXPORTPATH=./work EXPORTDATUM=${1} EXPORTSQL=$(dirname $0)/export_script.sql EXPORTSQL_TMP=${EXPORTPATH}/export.sql READYFILE=${EXPORTPATH}/ready EXPORTFILE_PREFIX=file.csv ## Prüfungen if ; then echo "not found" exit 1 fi
I am... (2 Replies)
I tried to run a command which simply generates SSH key with out prompting password.
After several trails , got the below command to run the script :
ssh-keygen -t rsa -N "" -f id_rsa
-N "" tells it to use an empty passphrase (the same as two of the enters in an interactive script)
-f... (0 Replies)
Discussion started by: ulaxmi
0 Replies
LEARN ABOUT DEBIAN
chsh
CHSH(1) User Commands CHSH(1)NAME
chsh - change login shell
SYNOPSIS
chsh [options] [LOGIN]
DESCRIPTION
The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
the login shell for her own account; the superuser may change the login shell for any account.
OPTIONS
The options which apply to the chsh command are:
-h, --help
Display help message and exit.
-R, --root CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.
-s, --shell SHELL
The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.
If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.
NOTE
The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
back to its original value.
FILES
/etc/passwd
User account information.
/etc/shells
List of valid login shells.
/etc/login.defs
Shadow password suite configuration.
SEE ALSO chfn(1), login.defs(5), passwd(5).
shadow-utils 4.1.5.1 05/25/2012 CHSH(1)