Command combination for displaying header and content
Hi everyone,
I have UNIX this semester and I am just getting started with the commands. An interesting question came up while discussing the head and tail commands.
Suppose that I have text file with the following data in the following format-:
Columns are separated with just one space. That means that there is only one space separating name from roll and one space separating roll from marks.
What I want to do sounds simple enough I want to print the details of JOHN only ALONG with the header information.
That means that NAME ROLL MARKS along with the record of John after it.
How do I do this with a combination of commands ? Or how is possible with the head and tail commands to be more precise ?
I have tried the following-:
(a.txt is the name of the file in my system containing the above entries)
but this does not work and the reason is that after running the head command I get only one line and that is printed (which will be header since it is the first line). But I am unable to get the header and the particular record.
Is there someway I can filter within the tee command ?
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:
Using the fixed length field file called famous.dat make a one-line Unix command - using pipe(s) - to display an... (5 Replies)
i have a input of csv file as below but the sequence of column get changed.
I,e it is not necessary that name comes first then age and rest all, it may vary.
name,age,marks,roll,section
kevin,25,80,456,A
Satch,23,56,789,B
Meena,24,78,H245,C
So i want to print that column entires which... (12 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:
You are given a ANSI text file (a.txt) in the following format and with the following contents-:
NAME ROLL... (7 Replies)
Hi guys !
I generated the power set of the set S={a,b,c} using crunch:
crunch 1 3 abc
and get the 39 possible subsets:
a
b
c
aa
ab
ac
ba
bb
bc
ca
cb
cc
… (2 Replies)
Hi,
I need to display specific columns using select statement and spooled to a file and sending it as e-mail. But i am not seeing column header in my output even i use SET HEADING ON.//PREDEFINED LOGIN DETAILS
${ORACLE_HOME}/bin/sqlplus -s ${DB_LOGIN}/${DB_PASSWD} <<EOF
SET FEEDBACK OFF
SET... (1 Reply)
Hi Team,
Not getting the file output inside my email which i am sending from unix box. . Please refer the below code :
#!/bin/sh
{
sleep 5
echo ehlo 10.56.185.13
sleep 3
echo mail from: oraairtel@CNDBMUREAPZP02.localdomain
sleep 3
echo rcpt to: saurabhtripathi@anniksystems.com... (1 Reply)
Hi All,
I want to send the csv to an email address.
I have tried the below two approaches.
Approach1: Got error -ksh: uuencode: not found
$ uuencode test_file.csv test_file.csv | mailx -s "Attaching test" msdc.kiran@gmail.com </usr/home/test_file.csv
-ksh: uuencode: not found
Approach2:... (6 Replies)
Discussion started by: ROCK_PLSQL
6 Replies
LEARN ABOUT CENTOS
git-shell
GIT-SHELL(1) Git Manual GIT-SHELL(1)NAME
git-shell - Restricted login shell for Git-only SSH access
SYNOPSIS
chsh -s $(command -v git-shell) <user>
git clone <user>@localhost:/path/to/repo.git
ssh <user>@localhost
DESCRIPTION
This is a login shell for SSH accounts to provide restricted Git access. It permits execution only of server-side Git commands implementing
the pull/push functionality, plus custom commands present in a subdirectory named git-shell-commands in the user's home directory.
COMMANDS
git shell accepts the following commands after the -c option:
git receive-pack <argument>, git upload-pack <argument>, git upload-archive <argument>
Call the corresponding server-side command to support the client's git push, git fetch, or git archive --remote request.
cvs server
Imitate a CVS server. See git-cvsserver(1).
If a ~/git-shell-commands directory is present, git shell will also handle other, custom commands by running "git-shell-commands/<command>
<arguments>" from the user's home directory.
INTERACTIVE USE
By default, the commands above can be executed only with the -c option; the shell is not interactive.
If a ~/git-shell-commands directory is present, git shell can also be run interactively (with no arguments). If a help command is present
in the git-shell-commands directory, it is run to provide the user with an overview of allowed actions. Then a "git> " prompt is presented
at which one can enter any of the commands from the git-shell-commands directory, or exit to close the connection.
Generally this mode is used as an administrative interface to allow users to list repositories they have access to, create, delete, or
rename repositories, or change repository descriptions and permissions.
If a no-interactive-login command exists, then it is run and the interactive shell is aborted.
EXAMPLE
To disable interactive logins, displaying a greeting instead:
+
$ chsh -s /usr/bin/git-shell
$ mkdir $HOME/git-shell-commands
$ cat >$HOME/git-shell-commands/no-interactive-login <<EOF
#!/bin/sh
printf '%s
' "Hi $USER! You've successfully authenticated, but I do not"
printf '%s
' "provide interactive shell access."
exit 128
EOF
$ chmod +x $HOME/git-shell-commands/no-interactive-login
SEE ALSO ssh(1), git-daemon(1), contrib/git-shell-commands/README
GIT
Part of the git(1) suite
Git 1.8.3.1 06/10/2014 GIT-SHELL(1)