Hi, $$ is a variable that contains the process id of the shell. It is used in tmp directories, to make it less likely that one process interferes with a temporary file of another process and that the temporary files do not share the same name.
from the man page:
Code:
$$: Expands to the process ID of the shell. In a () subshell, it expands to the process ID of the current shell, not the subshell.
Last edited by Scrutinizer; 07-21-2016 at 05:52 PM..
These 2 Users Gave Thanks to Scrutinizer For This Post:
Hello.
I'm looking at a file that has a ; at the beginning of certain lines. Could someone please tell me what that means? Is it a comment? Is it an execute?
Thank You (1 Reply)
Hi folks!
I'm new in this forum and in the UNIX-world too!!
I've got a real problem:
I have to read out datas like name and e-mail-adress from a Windows- Server from the active directory and put this information into a file.
This file should be moved (or copied) on a Unix- Server...
But I... (3 Replies)
I have a text file with rows of information (it is basically a ls command information(o/p from ls command))
I need to remove the lines ending with a .cnt extension and keep the lines ending with .zip extension, how to accomplish this.
I also only need the date,size and name of the file from every... (2 Replies)
HI
I'm looking to delete lines ending with .tk from below data file
---------
abc.tk
mgm.tk
dtk
mgmstk
------
I have written below code
----
sed '/.tk *$/d' dat_file.txt > temp.txt
----
But its deleting all the lines ending with tk. I need to delete only the lines ending .tk
my... (5 Replies)
Hi,
I'm trying to use sed within a shell script (bash, running ubuntu). The command works fine from the command line, but when I use it within the script, rather than creating a file with the name I've specified, it creates one that ends with a question mark '?' when you use ls, e.g.... (3 Replies)
Hi
Current SCO Unix 5.05
I see that there are filenames with @ at the end of file name for example
in the /usr/lib there is file lpadmin@
what does the @ represent when it is at the end of the file name
Thanks (4 Replies)
Hi, I have a series of files (upwards of 500) the filename format is as follows
CC10-1234P1999.WGS84.p190
each of this files is in a directory named for the file but excluding the extension.
Now the last three numeric characters, in this case 999, can be anything from 001 to 999, I need to... (3 Replies)
Hi, I have multiple large files which consist of the below format:
I am trying to write an awk or sed script to remove all occurrences of the 00 record except the first and remove all of the 80 records except the last one.
Any help would be greatly appreciated. (10 Replies)
Hi,
I have numerous files which have data in the following format
A|B|123.|Mr.|45.66|33|zz
L|16.|33.45|AC.|45.
I want to remove decimal point only if it is last character in a number.
O/p should be
A|B|123|Mr.|45.66|33|zz
L|16|33.45|AC.|45
I tried this
sed -e 's/.|/|/g'
Problem... (6 Replies)
Discussion started by: wahi80
6 Replies
LEARN ABOUT REDHAT
cdbs-edit-patch
CDBS-EDIT-PATCH(1) CDBS Documentation CDBS-EDIT-PATCH(1)NAME
cdbs-edit-patch - create or edit a CDBS simple-patchsys.mk patch
SYNOPSIS
cdbs-edit-patch patchname
DESCRIPTION
cdbs-edit-patch creates or edits patches for use by the CDBS simple-patchsys.mk patch system. For more information about CDBS please see
the documentation under /usr/share/doc/cdbs/.
When patchname exists, cdbs-edit-patch will set up a temporary working source tree, apply all patches up to and including patchname in lex-
icographic order, and spawn an interactive shell for the developer. The developer can then edit files in this working tree. When the
developer is done and exits the shell, cdbs-edit-patch updates patchname to reflect the changes made. To abort the process from the inter-
active shell, exit with a nonzero exit value.
When patchname does not exist, cdbs-edit-patch will assume that a new patch should be created. As with the above scenario, cdbs-edit-patch
will first create a temporary working source tree and apply all patches up to the new patch in lexicographic order. When the shell is
quit, cdbs-edit-patch will create patchname.
AUTHOR
CDBS was written by Colin Walters and others. cdbs-edit-patch was written by Martin Pitt. This manual page was written by Peter Eisen-
traut based on the dpatch-edit-patch(1) manual page.
SEE ALSO
CDBS documentation in /usr/share/doc/cdbs/, /usr/share/cdbs/1/rules/simple-patchsys.mk, dpatch-edit-patch(1), quilt(1)Debian 5 Feb 2006 CDBS-EDIT-PATCH(1)