04-10-2013
Hi Ophiuchus, the pipe symbol is a special character (alternation operator) that needs to be escaped if intended literally. Behind the -F is a string that contains a regex, which requires the escape character ( \ ) to be escaped itself, hence the double \\
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1. Shell Programming and Scripting
I want to find the top N entries for a certain field based on the values of another field.
For example if N=3, we want the 3 best values for each entry:
Entry1 ||| 100
Entry1 ||| 95
Entry1 ||| 30
Entry1 ||| 80
Entry1 ||| 50
Entry2 ||| 40
Entry2 ||| 20
Entry2 ||| 10
Entry2 ||| 50... (1 Reply)
Discussion started by: FrancoisCN
1 Replies
2. Shell Programming and Scripting
Hi,
I'm new to shell programming.
I have two variables a and b
a=val1
b=val2
could anyone kindly post the shell script to concatenate the values of variable a and b with an underscore(_) in between?
The final output should be val1_val2. (8 Replies)
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3. Shell Programming and Scripting
Hi,
I have a huge text file. It looks like
abcde bangalo country 12345 lastfield
i want to get first 3 characters from field1 and first 3 characters from field 2 and insert the result as a new field. example the result should be:
abcde bangalo abcban country 12345 lastfield
Please... (4 Replies)
Discussion started by: ajithshankar@ho
4 Replies
4. Shell Programming and Scripting
I've got a long logfile of the form
network1:123:45:6789:01:234:56
network2:12:34:556:778:900:12
network3:...
I've got a similar logfile from a week later with different values for each of the fields eg
network1:130:50:6800:10:334:66
network2:18:40:600:800:999:20
network3:...
... (5 Replies)
Discussion started by: Yorkie99
5 Replies
5. Shell Programming and Scripting
Hello,
I have a text file with n lines in the following format (9 column fields):
Example:
contig00012 149606 G C 49 68 60 18 c$cccccacccccccccc^c
I need to count the number of lower-case and upper-case occurences in column 9, respectively, of the... (3 Replies)
Discussion started by: s052866
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6. Shell Programming and Scripting
hi
i have file as below , i want to add duplicate records like bell_bb to one record with valuve as 15 ( addition of both )
any oneline awk script to achive this ?
header 0
CAMPAIGN_NAME 1
Bell_BB 14
Bell_MONTHLY 803
SOLO_UNBEATABLE 644
Bell_BB 1
Bell_MONTHLY 25
SOLO_UNBEATABLE... (4 Replies)
Discussion started by: raghavendra.cse
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7. Shell Programming and Scripting
Hi,
I have a file like this
A Bob
A Sam
A John
B David
C Paul
C Sandra
If the consecutive field values in column one is same, then concatenate the corresponding strings.
So, I need an output like this,
A Bob_Sam_John
B David
C Paul_Sandra
I usually work with excel but... (3 Replies)
Discussion started by: polsum
3 Replies
8. Shell Programming and Scripting
Hi,
I have got a file comp_data containing the below data :
38232836|9302392|49
39203827|8203203,3933203|52
72832788|567,3245,2434324|100
This file can have many rows like shown above. I want the values separated by "," in second column(taking "|" as delimiter) to be in quotes. These... (2 Replies)
Discussion started by: msabhi
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9. Shell Programming and Scripting
Table
ACN|NAME|CITY|CTY|NO1|NO2
115|AKKK|ASH|IND|10|15
115|AKKK|ASH|IND|20|20
115|AKKK|ASH|IND|30|35
115|AKKK|ASH|IND|30|35
112|ABC|FL|USA|15|15
112|ABC|FL|USA|25|20
112|ABC|FL|USA|25|45
i have written shell script using cut command
and awk programming getting error correct it and add... (5 Replies)
Discussion started by: udhal
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10. UNIX for Beginners Questions & Answers
there can be n number of columns but the number of columns and header name will remain same in all 3 files. Files are tab Delimited.
a.txt
Name 9/1 9/2
X 1 7
y 2 8
z 3 9
a 4 10
b 5 11
c 6 12
b.xt
Name 9/1 9/2
X 13 19
y 14 20
z 15 21
a 16 22
b 17 23
c 18 24 c.txt
Name 9/1 9/2... (14 Replies)
Discussion started by: Nina2910
14 Replies
LEARN ABOUT PHP
escapeshellarg
ESCAPESHELLARG(3) 1 ESCAPESHELLARG(3)
escapeshellarg - Escape a string to be used as a shell argument
SYNOPSIS
string escapeshellarg (string $arg)
DESCRIPTION
escapeshellarg(3) adds single quotes around a string and quotes/escapes any existing single quotes allowing you to pass a string directly
to a shell function and having it be treated as a single safe argument. This function should be used to escape individual arguments to
shell functions coming from user input. The shell functions include exec(3), system(3) and the backtick operator.
On Windows, escapeshellarg(3) instead removes percent signs, replaces double quotes with spaces and adds double quotes around the string.
PARAMETERS
o $arg
- The argument that will be escaped.
RETURN VALUES
The escaped string.
EXAMPLES
Example #1
escapeshellarg(3) example
<?php
system('ls '.escapeshellarg($dir));
?>
SEE ALSO
escapeshellcmd(3), exec(3), popen(3), system(3), backtick operator.
PHP Documentation Group ESCAPESHELLARG(3)