In bash, I can match the ' character in a substition involving the line ending symbol $, easily.
In tcsh I ran into a problem.
Code:
sed "s/$/'/g" filename
sed "s/$/'/g" < filename
sed -e "s/$/'/g" filename
Unmatched '.
Where can I find out why this is the case? (2 Replies)
So I am new to unix, and actually anything outside drag and drop with the mouse (been learning for about a week so far) . I have been using the foreach command in tcsh because I am working on a group of files. Basically what I need is to insert part of the filename as the first line in the file.... (0 Replies)
Hi,
I need to find tcsh shell version info on several boxes.
I made a script and running on boxes through SSH.
This is what i am doing :
echo /bin/tcsh -c 'echo $version' | ssh "box name"
but i dont see anything.
if i run /bin/tcsh -c 'echo $version' on ocal machine i see the... (2 Replies)
Greetings!
I love the power and control offered by BASH but detest its syntax! Is there some alternative *nix shell language? (other than TCSH)
Or maybe a wrapper that affords the use of BASH commands via an easier syntax?
I considered creating a complicated system of aliases to... (8 Replies)
Hello,
When i run a bash script on ubuntu i get this message..
#!/bin/bash cannot find file or directory...
Can anibody help me with this, because the file actually exists....
Is there any extra configuration to be made? (5 Replies)
As I stated in a previous thread - I'm a newbie to Unix/Linux and programming. I'm trying to learn the basics on my own using a couple books and the exercises provided inside.
I've reached an exercise that has me stumped. I need to write a bash script that will will read in a file and print the... (11 Replies)
So, I made a script beginning with #!/bin/bash on gedit.
And I double clicked it to run in terminal and I end up with "The child process exited normally with status 127" and "command not found".
If I run the same script from the terminal as "tcsh (script name)" it runs just fine.
If I... (8 Replies)
As part of a bash the below line strips off a numerical prefix from directory 1 to search for in directory 2.
for file in /home/cmccabe/Desktop/comparison/missing/*.txt
do
file1=${file##*/} # Strip off directory
getprefix=${file1%%_*.txt}
... (5 Replies)
I need to find a file and print its contents
I am trying but it is not working
find -path /opt/app-root/src/.npm/_logs -type f -name "*.log" -print
Version
$ bash -version
GNU bash, version 4.4.12(1)-release (x86_64-pc-msys) (1 Reply)
Discussion started by: SVRao19056
1 Replies
LEARN ABOUT MOJAVE
env5.18
Env(3pm) Perl Programmers Reference Guide Env(3pm)NAME
Env - perl module that imports environment variables as scalars or arrays
SYNOPSIS
use Env;
use Env qw(PATH HOME TERM);
use Env qw($SHELL @LD_LIBRARY_PATH);
DESCRIPTION
Perl maintains environment variables in a special hash named %ENV. For when this access method is inconvenient, the Perl module "Env"
allows environment variables to be treated as scalar or array variables.
The "Env::import()" function ties environment variables with suitable names to global Perl variables with the same names. By default it
ties all existing environment variables ("keys %ENV") to scalars. If the "import" function receives arguments, it takes them to be a list
of variables to tie; it's okay if they don't yet exist. The scalar type prefix '$' is inferred for any element of this list not prefixed by
'$' or '@'. Arrays are implemented in terms of "split" and "join", using $Config::Config{path_sep} as the delimiter.
After an environment variable is tied, merely use it like a normal variable. You may access its value
@path = split(/:/, $PATH);
print join("
", @LD_LIBRARY_PATH), "
";
or modify it
$PATH .= ":.";
push @LD_LIBRARY_PATH, $dir;
however you'd like. Bear in mind, however, that each access to a tied array variable requires splitting the environment variable's string
anew.
The code:
use Env qw(@PATH);
push @PATH, '.';
is equivalent to:
use Env qw(PATH);
$PATH .= ":.";
except that if $ENV{PATH} started out empty, the second approach leaves it with the (odd) value "":."", but the first approach leaves it
with ""."".
To remove a tied environment variable from the environment, assign it the undefined value
undef $PATH;
undef @LD_LIBRARY_PATH;
LIMITATIONS
On VMS systems, arrays tied to environment variables are read-only. Attempting to change anything will cause a warning.
AUTHOR
Chip Salzenberg <chip@fin.uucp> and Gregor N. Purdy <gregor@focusresearch.com>
perl v5.18.2 2013-11-04 Env(3pm)