04-16-2008
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
"Is there any substituation of last command or script syntax which can be used as a user. As far I know the "last" command is being used to display information about previous logins. A member of adm group or the user adm can execute it only.
Thanks in advance for your usual help.
Ghazi (6 Replies)
Discussion started by: ghazi
6 Replies
2. Shell Programming and Scripting
What I'm trying to do is perform a copy, well a ditto actually, on the results of a find command, but some inline string substitution needs to happen.
So if I run this code find ./ -name "*.tif" I get back these results.
.//1234567.tif
.//abcdefg.tif
Now the action from exec or xargs I... (2 Replies)
Discussion started by: myndcraft
2 Replies
3. Shell Programming and Scripting
Hi,
What is the actual difference between these two? Why the following code works for process substitution and fails for command substitution?
while IFS= read -r line; do echo $line; done < <(cat file)executes successfully and display the contents of the file
But,
while IFS='\n' read -r... (3 Replies)
Discussion started by: royalibrahim
3 Replies
4. Shell Programming and Scripting
Hello. I have 2 files.
File 1:
1692 @00000000201@00000205@20090402@000015000
1692 @00000000202@00000206@20090402@000010000
263157760@00000000401@00000201@20090402@000056250
510584583@00000000300@00000207@20090402@000030000
571764164@00000000100@00000128@20090402@000000500... (12 Replies)
Discussion started by: crazyhpux
12 Replies
5. UNIX for Dummies Questions & Answers
I'm trying to get this to work and I'm not really sure how to do it.
echo $x | awk '{print $NF}' MODIFIEDThe output I'm trying to get should look like:
dir1 MODIFIED
Where dir1 will be the result of:
$x |awk '{print $NF}'I'm sure there's something I'm supposed to put around that part... (3 Replies)
Discussion started by: ewoods
3 Replies
6. UNIX for Dummies Questions & Answers
I know this script is crummy, but I was just messing around.. how do I get sed's insert command to allow variable expansion to show the filename?
#!/bin/bash
filename=`echo $0`
/usr/bin/sed '/#include/ {
i\
the filename is `$filename`
}' $1
exit 0 (8 Replies)
Discussion started by: glev2005
8 Replies
7. UNIX for Dummies Questions & Answers
Hey, guys!
Trying to research this is such a pain since the read command itself is a common word. Try searching "unix OR linux read command examples" or using the command substitution keyword. :eek:
So, I wanted to use a command statement similar to the following.
This is kinda taken... (2 Replies)
Discussion started by: ProGrammar
2 Replies
8. Shell Programming and Scripting
Hi,
Need help with a sed command that I am using to substitute 3 positions of a pipe delimited file.
i am getting different results while substituting the same position of two different files with the same value. Please see details below:
$ cat chk2
... (3 Replies)
Discussion started by: vmenon
3 Replies
9. Shell Programming and Scripting
I have the following code:
strfuture=abcdefghi
ver=${strfuture:${count}:1}
mj7777_ver=${ver} start_mj7777_iteration
let count=count+1
When it is executed I get bad substitution. The same if I use
ver=${strfuture:$count:1}
mj7777_ver=${ver}... (6 Replies)
Discussion started by: Bruble
6 Replies
10. Shell Programming and Scripting
Oracle Linux 5.6, 64-bit
Given the following snippet
wrkvar=`sqlplus -s / as sysdba <<EOF
set echo off feedback off head off trimsp on
select count(*) from v\$parameter
where name in ('db_file_name_convert','log_file_name_convert')
and value is not null;
EOF`
echo wrkvar=$wrkvarProduces... (2 Replies)
Discussion started by: edstevens
2 Replies
LEARN ABOUT DEBIAN
dh-exec-subst
DH-EXEC-SUBST(1) dh-exec DH-EXEC-SUBST(1)
NAME
dh-exec-subst - Debhelper executable file substition scripts
SYNOPSIS
#! /usr/bin/dh-exec
src/libfoo-*.so.* debian/foo-plugins/usr/lib/foo/${DEB_HOST_MULTIARCH}/
DESCRIPTION
Being a sub-command of dh-exec(1), this program must not be ran directly, but through dh-exec, which automatically runs all available
sub-commands if run bare; or explicitly with dh-exec --with=subst.
It is a wrapper around the various other substitution helpers, and will pipe the input file through all the available substitution helpers.
It is up to these scripts to do the actual work.
When a helper fails to expand a variable within its input, it will leave it as-is, so that later in the pipeline it can perhaps be expanded
by another program.
SCRIPTS
dh-exec-subst-env
Substitutes any of the available, exported environment variables into its input. It does not do any kind of filtering: whatever is
available in the environment, will be available for substitution, however unsafe that may be.
dh-exec-subst-multiarch
Attempts to expand any of the variables known to dpkg-architecture(1), mostly useful for multi-arch support.
The command will query dpkg-architecture(1) directly, and does not rely on environment variables set (as the called program will
prefer already set environment variables anyway).
ENVIRONMENT
DH_EXEC_SCRIPTDIR
Indicates which directory the command-specific scripts should be sought for. If not specified, scripts will be searched for in
/usr/share/dh-exec/.
FILES
$DH_EXEC_SCRIPTDIR/dh-exec-subst-*
The various scripts for the higher-level program.
SEE ALSO
debhelper(1), dh-exec(1)
AUTHOR
dh-exec-subst is copyright (C) 2011-2012 by Gergely Nagy <algernon@madhouse-project.org>.
2012-05-03 DH-EXEC-SUBST(1)