10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
for example i have a directory
home/solaris/unix/samplefiles/
with defaults files in it.. those default files have 1 word in common "UNIX". how can i list the files without "UNIX" words in it using grep command
thanks,
im using unix solaris, korn shell.. (1 Reply)
Discussion started by: daveaztig14
1 Replies
2. Shell Programming and Scripting
Hello,
I am running below command as root user
#nodetool cfstats tests | grep "Memtable switch count"
Memtable switch count: 12
Where as when I try to run same command as another user it gives different result.
#su -l zabbix -s /bin/bash -c "nodetool cfstats tests | grep "Memtable switch... (10 Replies)
Discussion started by: Pushpraj
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3. Shell Programming and Scripting
grep -i -f panel_genes.txt hg19_refGene.txt > match.txt
seems to be pulling names the do not exist in the input file (panel_genes.txt) - the output is attached as well (match.txt)
For example, RNF185 or ZNF146 are not genes in the input. I am trying to match the input file genes only and am... (9 Replies)
Discussion started by: cmccabe
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4. Shell Programming and Scripting
Hi
I have lots of file in on folder and i want to egrep from only few files.
List of files......
Polt_KJ_430_OutputRBS_istUt_CR2.log
Polt_KN_4122_OutputRBS_ncChk_CR.log
Polt_LN_2230_OutputRNC_Hth_CLKLKL.log
Solt_KJ_430_OutputRBS_istUt_CR2.log
Solt_KN_4122_OutputRBS_ncChk_CR3.log... (2 Replies)
Discussion started by: asavaliya
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5. Shell Programming and Scripting
Hi,
I have around 500 Text files and Each file will be having either
String1 or String2.
I want to list the file only which has String1 and Sting2 in a single command.. (5 Replies)
Discussion started by: balasubramani04
5 Replies
6. Shell Programming and Scripting
Hi, im taking an entry Unix class, and as part of my lab assignment I have to copy all files in the /home/david/lab3 directory that have the file extension .save to your lab3/temp directory. I'm having trouble getting the grep to do anything worth while
I've been trying to do:
cp... (6 Replies)
Discussion started by: Critical jeff
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7. Shell Programming and Scripting
i want to search in the current directory all the files that contain one word for example "hello"
i want to achieve it with the grep command but not with the grep * (2 Replies)
Discussion started by: aintour
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8. UNIX for Advanced & Expert Users
I am doing "ps -f" to see my process.
but I get lines that one of it represents the ps command itself.
I want to grep it out using -v flag, but than I get another process that belongs to the GREP itself :
I would like to exclude
# ps -f
UID PID PPID C STIME TTY TIME CMD... (2 Replies)
Discussion started by: yamsin789
2 Replies
9. UNIX for Dummies Questions & Answers
hi all
i have directory
/usr
under this directory i have subdirectories
tmp1,tmp2,tmp3
like this
/usr/tmp1
/usr/tmp2
/usr/tmp3
and so on
i want to search string in files (i don't know the name of the files)and i want to serch it in all the directories under the /usr
how shell i do... (3 Replies)
Discussion started by: naamas03
3 Replies
10. Shell Programming and Scripting
What is the meaning of this
grep -v $object grant_BU.sql>temp (1 Reply)
Discussion started by: debasis.mishra
1 Replies
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)