Better readable is another separator that is not used in the expression string g option is not needed unless the whole expression should match more than once within one line.
when i am running a sed command i want to get rid of all of the backslashes in the lin but it is taking this as being a command how do i delete backslashes?????
sed -e "s/\/g"
Anyn ideas????????? (7 Replies)
Hi,
I'm trying to use the sed command but I'm not sure how to use it properly. I've read the man pages for the sed command but I'm still unsure on how to use it.
Basically I have a file with the words male and female written multiple times. I want to swap the word male for female and... (4 Replies)
I have a group of xml files and I need to insert 3 parameters just after this line in each file:
---------------Pattern to be searched for-------------------------
<!--The following configuration is a test configuration-->
---------------Parameters to be added---------------------------... (11 Replies)
At the moment, I'm trying to do the following:
1. Have sed read the first line of a file
Example (file1.x):
5
2. Replace that first line with a new first line, which would read
5=newvariable
3. Have that information placed into file2.y
Unfortunately, I'm having a problem. Sed... (5 Replies)
Hi,
The config file:
# Port(s) for accepting client connections
RTSPPort=554
bash-3.00# awk -F"=" -v gr="888" '/RTSPPort/{$2=gr;}1' OFS="=" server.ini
awk: syntax error near line 1
awk: bailing out near line 1
Can you help me on why this doesn't work.
The next one neighter. Dosn't... (0 Replies)
trying to remove the portion in red:
Data:
mds_ar/bin/uedw92wp.ksh: $AI_SQL/wkly.sql
mds_ar/bin/uedw92wp.ksh: $EDW_TMP/wkly.sql
output to be:
mds_ar/bin/uedw92wp.ksh: wkly.sql
mds_ar/bin/uedw92wp.ksh: wkly.sql
SED i'm trying to use:
sed 's/:+\//: /g' input_file.dat >... (11 Replies)
i have a file acc.sh which has about 10 lines and then i have defined $var which has a line number in it (say 5). i want to extarct from line 5 to the end of the file and put the output into another file. I have used
sed -n $var,'$p' acc.sh | tee abc.sh
but at times it does'nt work and gives an... (6 Replies)
Hi everyone!
I have a file like that:
And I would it like that:
I don't know how to keep the first field and sort the second one.
I have a second question with sed...
to put the variable $VAR at the beginning of the file...
But I have an output like this:
snork... (3 Replies)
$ echo "a,0,0,0,b,0" | sed 's/,0,/,1,/g'
gives output as
$ a,1,0,1,b,0
rather than as
a,1,1,1,b,0
how can i solve this problem
Thanks a lot in advance....
Use code tags. (4 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Okay so I am taking bash scripting this semester and we are now working on the stream editor sed. For our book we... (4 Replies)
Discussion started by: aggie6970
4 Replies
LEARN ABOUT V7
grep
GREP(1) General Commands Manual GREP(1)NAME
grep, egrep, fgrep - search a file for a pattern
SYNOPSIS
grep [ option ] ... expression [ file ] ...
egrep [ option ] ... [ expression ] [ file ] ...
fgrep [ option ] ... [ strings ] [ file ]
DESCRIPTION
Commands of the grep family search the input files (standard input default) for lines matching a pattern. Normally, each line found is
copied to the standard output; unless the -h flag is used, the file name is shown if there is more than one input file.
Grep patterns are limited regular expressions in the style of ed(1); it uses a compact nondeterministic algorithm. Egrep patterns are full
regular expressions; it uses a fast deterministic algorithm that sometimes needs exponential space. Fgrep patterns are fixed strings; it
is fast and compact.
The following options are recognized.
-v All lines but those matching are printed.
-c Only a count of matching lines is printed.
-l The names of files with matching lines are listed (once) separated by newlines.
-n Each line is preceded by its line number in the file.
-b Each line is preceded by the block number on which it was found. This is sometimes useful in locating disk block numbers by con-
text.
-s No output is produced, only status.
-h Do not print filename headers with output lines.
-y Lower case letters in the pattern will also match upper case letters in the input (grep only).
-e expression
Same as a simple expression argument, but useful when the expression begins with a -.
-f file
The regular expression (egrep) or string list (fgrep) is taken from the file.
-x (Exact) only lines matched in their entirety are printed (fgrep only).
Care should be taken when using the characters $ * [ ^ | ? ' " ( ) and in the expression as they are also meaningful to the Shell. It is
safest to enclose the entire expression argument in single quotes ' '.
Fgrep searches for lines that contain one of the (newline-separated) strings.
Egrep accepts extended regular expressions. In the following description `character' excludes newline:
A followed by a single character matches that character.
The character ^ ($) matches the beginning (end) of a line.
A . matches any character.
A single character not otherwise endowed with special meaning matches that character.
A string enclosed in brackets [] matches any single character from the string. Ranges of ASCII character codes may be abbreviated
as in `a-z0-9'. A ] may occur only as the first character of the string. A literal - must be placed where it can't be mistaken as
a range indicator.
A regular expression followed by * (+, ?) matches a sequence of 0 or more (1 or more, 0 or 1) matches of the regular expression.
Two regular expressions concatenated match a match of the first followed by a match of the second.
Two regular expressions separated by | or newline match either a match for the first or a match for the second.
A regular expression enclosed in parentheses matches a match for the regular expression.
The order of precedence of operators at the same parenthesis level is [] then *+? then concatenation then | and newline.
SEE ALSO ed(1), sed(1), sh(1)DIAGNOSTICS
Exit status is 0 if any matches are found, 1 if none, 2 for syntax errors or inaccessible files.
BUGS
Ideally there should be only one grep, but we don't know a single algorithm that spans a wide enough range of space-time tradeoffs.
Lines are limited to 256 characters; longer lines are truncated.
GREP(1)