I have a file called get_columns.sh that I would like to replace $2 with $3. I have the following sed command written that works
sed s/'$3'/'$2'/g get_columns.sh > output.txt
However, when I try the command below, the file is empty.
sed s/'$3'/'$2'/g get_columns.sh > get_columns.sh
... (2 Replies)
Hi Guys,
Working on a script in the Vi editor that requires the fifth column of a particular line changed.
e.g.
Name:Address:email:A
where "A" needs to be changed to what the variable $access holds ($access currently has the words admin access in it)
when I use this command :
`sed... (3 Replies)
Hello,
I have a shell script containing a command string in the following format:
command1 | command2 | cut -c9-16
The output from this is a record number (using characters 9-16 of the original output string) e.g. ORD-1234
I wish to save this value to a variable for use in later commands... (4 Replies)
HI!
I have a file that looks like this:
>ANKRD30_2kb
AAGTAACCAATGCAGGAAACCGAGAGGAGAGGTTTGGAAGGTGGTTTAGTGAGGTAATCCATCTTTTCT
AGTGATAAACTGGCACCCAGTCAATTTATTCATCAGAAGGGAATACATCAGCCTGGCGTGGTGGCTCGC
CCCCGACCCTGTCAGCGTCACCAGCAGCGCGGATCCATGGGCCAGAAGCCTCTAGGGCGCCTAAGTCAG
Number of residues in the... (9 Replies)
When I run this:
PDHDURL=`/usr/bin/curl --silent http://www.phdcomics.com/comics.php | /usr/bin/grep -o http://www.phdcomics.com/comics/archive/.*.gif | head -1`
echo -e "$PHDURL"
It is totally blank. However, when I just run it from the terminal:
/usr/bin/curl --silent... (2 Replies)
My script ssh's to another server and gathers information then process them. The problem is that the output of a command has an unwanted "blank lines".
...
ssh user1@${server1} /usr/bin/ls -l /tmp/file1 | awk '{print $5}' > ${DATAFILE}
...
$ cat ${DATAFILE}
123456789 (There's a blank... (7 Replies)
I am ssh to many servers to get some information... however sometimes the server is unreacheable and i am getting an error. I want to save that output to a file but I am not able to do so...
I want to be able to save output of bash into a file.. so when I run this command on a script
ssh... (5 Replies)
Hi all........
Plss do help me.......in a big trouble... :wall::wall::wall:
I have 3 directories named as :1. /home/shuchi/source
2./home/shuchi/destination
3./home/shuchi/filter
now the problem is /home/shuchi/source has say 2 files with extension .txt as given below :
A.txt
Code:
... (0 Replies)
Hi all........
Plss do help me.......in a big trouble... :wall::wall::wall:
I have 3 directories named as :1. /home/shuchi/source
2./home/shuchi/destination
3./home/shuchi/filter
now the problem is /home/shuchi/source has say 2 files with extension .txt as given below :
A.txt
msisdn ... (5 Replies)
Hi,
i need help with a file creation of an output program. I've got a program that with #find creates an output for each files in a directory.
If i give this command :
-o spec$(date -u +%Y%m%dt%H%M)
it creates just one file, overwriting all the others since it is the creation date .... (2 Replies)
Discussion started by: Board27
2 Replies
LEARN ABOUT LINUX
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.
-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).
User Commands 06/24/2011 CHSH(1)