Hello,
I have never ever seen below notation for string substitution.
Code:
sed -i -e 's/tttt/pppp'/g /var/bin/czech.sh;
The strange thing for me is the position of the apostrophe. Should it be before the / or after the g?
If I had been writing that command line, I would have chosen below way:
Code:
sed -i -s 's/tttt/pppp/g' /var/bin/czech.sh
Could you please explain what it differs...
Is that about the operating system?
Many thanks
Boris
Regular expressions uses meta-characters. These are characters that have special meaning beyond the representation of the character. The shell has also meta-characters. Therefore in order to protect the meaning of these characters it must be quoted so it gets passed to sed as the regular expression intended.
In this case the quoting could be avoided all together sed s/tttt/pppp/g /var/bin/czech.sh since there are no meta-characters.
Hello,
I'm trying to translate a fixed length (the first 6 positions) that begins with a 0 to overwrite the field with an *.
Any suggestion?
File 1
-------
013344 01:20
222343 19:30
233333 20:30
File 2 (result)
-----------------
****** 01:20
222343 19:30
233333 20:30 (5 Replies)
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Hi all,
I need your help.
For example I have string in file.txt:
-x -a /tmp/dbarchive_NSS_20081204 -f 900 -l 1 2008/12/04 2008/12/04
So, I need to replace symbols from (for e.g.) position 26 till 33 with symbols which I have in file replace.txt
And I have no idea how to do it.
If... (1 Reply)
I want to remove text from nth position to nth position couple of times in same line
my line is
"hello is there anyone can help me with this question"
I need like this
ello is there anyone can help me with question
'h' is removed and 'this' removed from the line. I want to do this... (5 Replies)
I'm drawing a blank on how to use sed to replace selectively based on position in the string (vs nth occurence):
hello.|there.|how.|are.|you.|
I want the period removed in the 3rd item (as defined by the pipe delimiter) if a period is present. So the result in this case would be:
... (2 Replies)
I'm coding using BASH and have a requirement to replace apostrophes with backslash apostrophes. For example below:
I am here 'in my room' ok
Would be changed to:
I am here /'in my room/' ok
The original text is coming from a field in a MySql database and is being used by another process that... (5 Replies)
Hi,
I have a document with usual English text and some of the words have apostrophes (e.g. don't, can't, etc.)
I would like all these apostrophes to be doubled (e.g. don''t, can''t, etc.), but the problem is, that some of such words have double apostrophe and
by using sed -i "s/'/''/g"... (2 Replies)
Currently the table looks like this
student-id,last,first,hwk1,hwk2,hwk3,exam1,hwk4,hwk5,exam2
pts-avail,,,100,150,100,200,100,150,300
991-78-7872,Thompson,Ken,95,143,79,185,95,135,259
123-45-6789,Richie,Dennis,99,123,89,189,97,139,279
234-56-7891,Aho,Al,78,146,75,176,88,128,285... (3 Replies)
i have a requirement like this
if the line contains from position 294 to 299 is equal to "prabhu" ,then print entire line .
i want to use awk
awk '{if(substr(294-299) == 'prabhu') print "line" }' filename (1 Reply)
Thanks to help from Don Cragun in post 302924174, I'm off and getting into trouble on my own (finally) with sed.
Here is my goal - insert \\r\n at the 60th character on each line and then every 76th character thereafter:
Input:... (3 Replies)
Discussion started by: gusbrown
3 Replies
LEARN ABOUT SUNOS
smrsh
smrsh(1M) System Administration Commands smrsh(1M)NAME
smrsh - restricted shell for sendmail
SYNOPSIS
smrsh -c command
DESCRIPTION
The smrsh program is intended as a replacement for the sh command in the prog mailer in sendmail(1M) configuration files. The smrsh program
sharply limits commands that can be run using the |program syntax of sendmail. This improves overall system security. smrsh limits the set
of programs that a programmer can execute, even if sendmail runs a program without going through an alias or forward file.
Briefly, smrsh limits programs to be in the directory /var/adm/sm.bin, allowing system administrators to choose the set of acceptable com-
mands. It also rejects any commands with the characters: ,, <, >, |, ;, &, $,
(<RETURN>), or
(<NEWLINE>) on the command line to pre-
vent end run attacks.
Initial pathnames on programs are stripped, so forwarding to /usr/ucb/vacation, /usr/bin/vacation, /home/server/mydir/bin/vacation, and
vacation all actually forward to/var/adm/sm.bin/vacation.
System administrators should be conservative about populating /var/adm/sm.bin. Reasonable additions are utilities such as vacation(1) and
procmail. Never include any shell or shell-like program (for example, perl) in the sm.bin directory. This does not restrict the use of
shell or perl scrips in the sm.bin directory (using the #! syntax); it simply disallows the execution of arbitrary programs.
OPTIONS
The following options are supported:
-c command
Where command is a valid command, executes command.
FILES
/var/adm/sm.bin directory for restricted programs
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsr, SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO sendmail(1M), , attributes(5)SunOS 5.10 6 Nov 1998 smrsh(1M)