Are you insisting in PERL? Because in fact this is a simple operation and to use PERL for this is probably overkill of the extreme sort. The following solution is sed and will do the job:
I assumed the variable "$DATE" here, which is part of my environment, because i like to have date-coded backup files if i let something change via a script. If you don't have such a variable either create one before or even dump the command altogether if you don't need a backup copy.
Replace "<spc>" and "<tab>" with literal spaces/tabs. If you have more than one line to comment out just duplicate the line and change the path accordingly. The "&" in the replacement part means "everything matched by the regexp before":
Hello,
I have a file as follow
a
b
c
c
d
d
e
I would like to write a awk command to insert # from the first occurence of
"c" to the end of the files.
OUTPUT should be like this
a
b
#c (5 Replies)
I need a perl substitution to remove only the comment in the line . That line may have '#' with in double quotes .I used the following ,
s/(^.*\".+?#.+?\".+?)(#.*)/$1/g
It works for ,
print " not a comment # not a comment " . "not a comment # not a comment" ; # It is a comment
... (3 Replies)
I have a working directory on a server with over 100 INI files. For the most part, they are configured the same way. Each line will contain 1 or none variables listed from the first character in the line such as VariableName=0.
Unfortunately there are comments everywhere using the... (4 Replies)
I want to find out which files under /etc have the the following section:
and then i would like to comment out the above section in all the files.
Please help. (3 Replies)
Legends,
Can you please help me in following.
I need to comment lines from “/tmp/a.txt” from the line A to line B through the command prompt only.
Please use variables not direct values like 2 or 5
It can be done with VI editor but it's not matches with my requirement (: 2,5 s/^/#/g).
... (1 Reply)
Platform : RHEL 5.4
I have several .sql files in a directory. I want to comment lines 10 to 25 for all .sql files.
How can I do this ?
The symbol for comment in SQL is --
eg:
-- select salary from emp where empname = 'URS' ; (3 Replies)
Greetings fellow scripters.
I find myself editing multiple files, sometimes with the same bits of information. My bash script, a changelog, and a plist file (OS X). Once I realized this, I thought why not script part of this process (and so it begins). In any case, I've solved several of the... (1 Reply)
Hello,
I have a SAS code that predominantly has comments line and the real code like below and i want to remove ONLY THE COMMENTS from the code in the single line or spanned across multiple lines.
/********************************************************************
*** This Is a Comment... (4 Replies)
Discussion started by: arooonatr
4 Replies
LEARN ABOUT CENTOS
systemd-fstab-generator
SYSTEMD-FSTAB-GENERATOR(8) systemd-fstab-generator SYSTEMD-FSTAB-GENERATOR(8)NAME
systemd-fstab-generator - Unit generator for /etc/fstab
SYNOPSIS
/usr/lib/systemd/system-generators/systemd-fstab-generator
DESCRIPTION
systemd-fstab-generator is a generator that translates /etc/fstab (see fstab(5) for details) into native systemd units early at boot and
when configuration of the system manager is reloaded. This will instantiate mount and swap units as necessary.
The <term>passno</term> field is treated like a simlpe boolean, and the ordering information is discarded. However, the root filesystem is
checked before all the other filesystems.
See systemd.mount(5) and systemd.swap(5) for more information about special /etc/fstab mount options this generator understands.
systemd-fstab-generator implements the generator specification[1].
KERNEL COMMAND LINE
systemd-fstab-generator understands the following kernel command line parameters:
fstab=, rd.fstab=
Takes a boolean argument. Defaults to "yes". If "no", causes the generator to ignore any mounts or swaps configured in /etc/fstab.
rd.fstab= is honored only by initial RAM disk (initrd) while fstab= is honored by both the main system and the initrd.
SEE ALSO systemd(1), fstab(5), systemd.mount(5), systemd.swap(5), systemd-cryptsetup-generator(8)NOTES
1. generator specification
http://www.freedesktop.org/wiki/Software/systemd/Generators
systemd 208SYSTEMD-FSTAB-GENERATOR(8)