Hi
I would like to know wheather there is anyway to pass a variable to grep argument like this
grep "$myvar" $myfile
i would put this in a function and then call this function by setting different values to myvar and myfile.
is this possible at all.
regards
Hrishy (4 Replies)
I have a large file that I am grepping to find a certain string.
grep 'C:\Data\Directory\Test.txt' test.txt
It can not find it even though I know it is in there . I know that there is a problem with the backslashes but I can't get it to work. I tried
grep... (2 Replies)
Hi there, this is a very simple question.
When I do grep -c "PWD" filename, I get 5. This means the filename contains 5 lines of "PWD" occurence.
I tried to assign to a variable. int= grep -c "PWD" filename
When I typed echo $int
The output:
5
I get an empty line space. Now I... (1 Reply)
I have a problem. Suppose I have a log named transport.log
>>
tp finished with return code: 203
meaning:
wrong syntax in tp call
....
tp finished with return code: 0
meaning:
Everything ok.
<<
What i want to do is to get the return code of the 1st one. So I would probably do:... (2 Replies)
Changed Problem its a sed actually...
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:
Use a sed command to create an output file from the input file. The input... (2 Replies)
Hi,
When i try this it is not executing either result or total, pls can any one help me in this.
max=month_134.log
grep result|total $max > log.txt
In month_134.log, it should contain either result or total and then send it to log.txt.It should execute result or total in log.txt
... (3 Replies)
Hi
I am trying to grep a string in a directory which is having 5000 files.
PA>> grep -iH 'linc.unisure_pr13n' *
bash: /usr/bin/grep: Arg list too long
I am getting the error. i also tried
PA>> ls -ltr | grep -iH 'linc.unisure_pr13n' *
but still i am getting the error
Please Advice... (4 Replies)
Hi everyone
i am facing a strange problem in grep below is the code
RC=0
grep $ERROR_MASK $LOG_FILE 2>&1 > /dev/null && RC=1 || RC=0
what does the above statment do i mean it search for error mask into log file and redirect the error to console null then what's the meaning of RC=1 ||... (2 Replies)
Hello. I'm learning shell scripting right now and I'm trying simple scripts. I have a problem with the one below. The idea is to found the number of files containing asd in their name. Here's the code:
#!/bin/sh
pattern=asd
total=0
for f in *
do
&& continue
if grep $pattern $f >... (3 Replies)
I don't know if you guys get this problem sometimes at Terminal but I had been having this problem since yesterday :( Maybe I overdid the Terminal. Even the codes that used to work doesn't work anymore.
Here is what 's happening:
* I wanted to remove lines containing digits so I used this... (25 Replies)
Discussion started by: Nexeu
25 Replies
LEARN ABOUT OSX
cat
CAT(1) BSD General Commands Manual CAT(1)NAME
cat -- concatenate and print files
SYNOPSIS
cat [-benstuv] [file ...]
DESCRIPTION
The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command-line order. If
file is a single dash ('-') or absent, cat reads from the standard input. If file is a UNIX domain socket, cat connects to it and then reads
it until EOF. This complements the UNIX domain binding capability available in inetd(8).
The options are as follows:
-b Number the non-blank output lines, starting at 1.
-e Display non-printing characters (see the -v option), and display a dollar sign ('$') at the end of each line.
-n Number the output lines, starting at 1.
-s Squeeze multiple adjacent empty lines, causing the output to be single spaced.
-t Display non-printing characters (see the -v option), and display tab characters as '^I'.
-u Disable output buffering.
-v Display non-printing characters so they are visible. Control characters print as '^X' for control-X; the delete character (octal
0177) prints as '^?'. Non-ASCII characters (with the high bit set) are printed as 'M-' (for meta) followed by the character for the
low 7 bits.
EXIT STATUS
The cat utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
The command:
cat file1
will print the contents of file1 to the standard output.
The command:
cat file1 file2 > file3
will sequentially print the contents of file1 and file2 to the file file3, truncating file3 if it already exists. See the manual page for
your shell (i.e., sh(1)) for more information on redirection.
The command:
cat file1 - file2 - file3
will print the contents of file1, print data it receives from the standard input until it receives an EOF ('^D') character, print the con-
tents of file2, read and output contents of the standard input again, then finally output the contents of file3. Note that if the standard
input referred to a file, the second dash on the command-line would have no effect, since the entire contents of the file would have already
been read and printed by cat when it encountered the first '-' operand.
SEE ALSO head(1), more(1), pr(1), sh(1), tail(1), vis(1), zcat(1), setbuf(3)
Rob Pike, "UNIX Style, or cat -v Considered Harmful", USENIX Summer Conference Proceedings, 1983.
STANDARDS
The cat utility is compliant with the IEEE Std 1003.2-1992 (``POSIX.2'') specification.
The flags [-benstv] are extensions to the specification.
HISTORY
A cat utility appeared in Version 1 AT&T UNIX. Dennis Ritchie designed and wrote the first man page. It appears to have been cat(1).
BUGS
Because of the shell language mechanism used to perform output redirection, the command ``cat file1 file2 > file1'' will cause the original
data in file1 to be destroyed!
The cat utility does not recognize multibyte characters when the -t or -v option is in effect.
BSD March 21, 2004 BSD