Hi, experts,
I would like to create a function that can calculate the total number of lines in a saved text file and delete specific lines in that particular file (I only want the last few lines). Hav anybody have the experience and giv me a hand in this? (9 Replies)
Hello,
Hello Firends,
I have file like below. I want to remove selected blocks say abc,pqr,lst. how can i remove those blocks from file.
zone abc {
blah
blah
blah }
zone xyz {
blah
blah
blah }
zone pqr {
blah
blah
blah } (4 Replies)
Hi
I want to delete first five and last five lines in text files without opening the file and also i want to keep the same file name for all the files.
Thanks in advance!!!
Ragav (10 Replies)
Hi,
I have a file like below
robert
PREF: 3
AVAIL:
henry
PREF: 234
AVAIL:
john
PREF: 145,178
AVAIL: 123
matt
PREF: 564,932
AVAIL:
ten
PREF: 389
AVAIL: kill (2 Replies)
hi guys,
I have very large txt files (200GB) and just want to to delete the first two lines (headers). So far I used
sed -i '1,2d' infile.txtbut this command always takes extremely long as it writes all again. Is there a better way to do it (ie just to delete the lines without writing all... (2 Replies)
I have 2 TXT files with with 8 columns in them(tab separated). First file has 2000 entries whereas 2nd file has 300 entries.
The first file has ALL the lines of second file. Now I need to remove those 300 lines (which are in both files) from first file so that first file's line count become... (2 Replies)
Hi
I have a text file like below. THe content of the text will vary.
Entire text file have four consecutive lines followed with blank line.
I want to delete the occurrence of the two consicutive lines in the text file. I don't have pattern to match and delete. Just i need to delete all... (5 Replies)
Hi,
I tried the following options but was unable to delete blank lines from file
Input file = temp.hash.txt
temp.hash.txt content
90
0
89.56
0
0
57575.4544
56.89 (9 Replies)
Hi..
I need some help in converting the below horizontal lines to vertical lines format.
can anyone help me on this.
input file
Hour,1,2,3,4,5
90RT,106,111,111,112,111
output file
Hour,90RT
1,106
2,111
3,111
4,112
5,111 (3 Replies)
Discussion started by: Raghuram717
3 Replies
LEARN ABOUT OSX
csreq
CSREQ(1) BSD General Commands Manual CSREQ(1)NAME
csreq -- Expert tool for manipulating Code Signing Requirement data
SYNOPSIS
csreq [-v] -r requirement-input -t
csreq [-v] -r requirement-input -b outputfile
DESCRIPTION
The csreq command manipulates Code Signing Requirement data. It reads one requirement from a file or command arguments, converts it into
internal form, checks it, and then optionally outputs it in a different form.
The options are as follows:
-b path
Requests that the requirement read be written in binary form to the path given.
-r requirement-input
Specifies the input requirement. See "specifying requirements" below. This is exactly the same format as is accepted by the -r and -R
options of the codesign(1) command.
-t Requests that the requirement read be written as text to standard output.
-v Increases the verbosity of output. Multiple instances of -v produce increasing levels of commentary output.
In the first synopsis form, csreq reads a Code Requirement and writes it to standard output as canonical source text. Note that with text
input, this actually compiles the requirement into internal form and then converts it back to text, giving you the system's view of the
requirement code.
In the second synopsis form, csreq reads a Code Requirement and writes its binary representation to a file. This is the same form produced by
the SecRequirementCopyData API, and is readily acceptable as input to Code Signing verification APIs. It can also be used as input to subse-
quent invocations of csreq by passing the filename to the -r option.
SPECIFYING REQUIREMENTS
The requirement argument (-r) can be given in various forms. A plain text argument is taken to be a path to a file containing the require-
ment. This program will accept both binary files containing properly compiled requirements code, and source files that are automatically com-
piled for use. An argument of "-" requests that the requirement(s) are read from standard input. Again, standard input can contain either
binary form or text. Finally, an argument that begins with an equal sign "=" is taken as a literal requirements source text, and is compiled
accordingly for use.
EXAMPLES
To compile an explicit requirement program and write its binary form to file "output":
csreq -r="identifier com.foo.test" -b output.csreq
To display the requirement program embedded at offset 1234 of file "foo":
tail -b 1234 foo | csreq -r- -t
FILES DIAGNOSTICS
The csreq program exits 0 on success or 1 on failure. Errors in arguments yield exit code 2.
SEE ALSO codesign(1)HISTORY
The csreq command first appeared in Mac OS 10.5.0 .
BSD June 1, 2006 BSD