The shell doesn't expand variables if enclosed in single quotes. Try double quotes:
Since the user's $first and $last both expand to strings containing slash (/) characters, double quotes won't work in this case either unless the slashes in the variables are escaped:
before invoking sed. And, if that is done, that sed command will print lines from the 1st one matching $first through the 1st one matching $last; it won't print the lines between the patterns, it will also print the first line match each of those patterns.
Can someone please help me with searching a string during a specific time frame. Below is the format of the time from my log file.
"GET /AAM2009_wherewereheaded.wmv HTTP/1.1" 200 52307085
The search string I need is "AAM2009_wherewereheaded.wmv"
I need to search the number of... (1 Reply)
Hi all
This is my output of the some SQL Query
TABLESPACE_NAME FILE_NAME TOTALSPACE FREESPACE USEDSPACE Free
------------------------- ------------------------------------------------------- ---------- --------- ---------... (2 Replies)
Greetings!
I'm looking for starting information for a shell script. Here's my scenario:
I have multiple folders(100) for example:
/www/test/applications/app1/logs
/www/test/applications/app2/logs
Within these folders there are log files files that need to be deleted after a month.
... (3 Replies)
I have log files with time stamps. I want to search for text between two time stamp using sed even if the first tme stamp or the last time stamp are not present. For e.g. if i search between 9:30 and 9:40 then it should return text even if 9:30 or 9:40 is not there but between 9:30 and 9:40 is... (8 Replies)
I have created the script to grep the errors from weblogic logs files and redirecting output to file.txt ...From file.txt I'm using awk command to collect the past 20 mins output...The script running from cron every 15 mins... The script working well...
Now the challenges, I'm trying to use... (27 Replies)
Hi Experts ,
I need your help to collect the complete data between two time frame from the log files, when I try awk it's collecting the data only which is printed with time stamp
for example, awk works well from "16:00 to 17:30" but its not collecting <line*> "from 17:30 to 18:00"
... (8 Replies)
I am facing an Issue with a particular Unix Account ( ie a particular Userid) getting LOCKED everyday between 7:30am and 8:00am. The Password associated with this particular Account has been setup such that it should never Expire at all but it does LOCK the Account after more than 3 failed... (5 Replies)
Hi
I have a system running uname -a
Linux cmovel-db01 2.6.32-38-server #83-Ubuntu SMP Wed Jan 4 11:26:59 UTC 2012 x86_64 GNU/Linux
I would like to capture the contents of /var/log/syslog from 11:00AM to 11:30AM and sent to this info via email.
I was thinking in set a cron entry at that... (2 Replies)
Input file:
data1 0.05
data2 1e-14
data1 1e-330
data2 1e-14
data5 2e-60
data5 2e-150
data1 4e-9
Desired output:
data2 1e-14
data1 1e-330
data2 1e-14
data5 2e-60
data5 2e-150
I would like to filter out those result that column 2 is less than 1e-10.
Command try: (1 Reply)
Discussion started by: cpp_beginner
1 Replies
LEARN ABOUT MINIX
regex
regex(1F) FMLI Commands regex(1F)NAME
regex - match patterns against a string
SYNOPSIS
regex [-e] [ -v "string"] [ pattern template] ... pattern [template]
DESCRIPTION
The regex command takes a string from the standard input, and a list of pattern / template pairs, and runs regex() to compare the string
against each pattern until there is a match. When a match occurs, regex writes the corresponding template to the standard output and
returns TRUE. The last (or only) pattern does not need a template. If that is the pattern that matches the string, the function simply
returns TRUE. If no match is found, regex returns FALSE.
The argument pattern is a regular expression of the form described in regex(). In most cases, pattern should be enclosed in single quotes
to turn off special meanings of characters. Note that only the final pattern in the list may lack a template.
The argument template may contain the strings $m0 through $m9, which will be expanded to the part of pattern enclosed in ( ... )$0 through
( ... )$9 constructs (see examples below). Note that if you use this feature, you must be sure to enclose template in single quotes so
that FMLI does not expand $m0 through $m9 at parse time. This feature gives regex much of the power of cut(1), paste(1), and grep(1), and
some of the capabilities of sed(1). If there is no template, the default is $m0$m1$m2$m3$m4$m5$m6$m7$m8$m9.
OPTIONS
The following options are supported:
-e Evaluates the corresponding template and writes the result to the standard output.
-v "string" Uses string instead of the standard input to match against patterns.
EXAMPLES
Example 1: Cutting letters out of a string
To cut the 4th through 8th letters out of a string (this example will output strin and return TRUE):
`regex -v "my string is nice" '^.{3}(.{5})$0' '$m0'`
Example 2: Validating input in a form
In a form, to validate input to field 5 as an integer:
valid=`regex -v "$F5" '^[0-9]+$'`
Example 3: Translating an environment variable in a form
In a form, to translate an environment variable which contains one of the numbers 1, 2, 3, 4, 5 to the letters a, b, c, d, e:
value=`regex -v "$VAR1" 1 a 2 b 3 c 4 d 5 e '.*' 'Error'`
Note the use of the pattern '.*' to mean "anything else".
Example 4: Using backquoted expressions
In the example below, all three lines constitute a single backquoted expression. This expression, by itself, could be put in a menu defini-
tion file. Since backquoted expressions are expanded as they are parsed, and output from a backquoted expression (the cat command, in this
example) becomes part of the definition file being parsed, this expression would read /etc/passwd and make a dynamic menu of all the login
ids on the system.
`cat /etc/passwd | regex '^([^:]*)$0.*$' '
name=$m0
action=`message "$m0 is a user"`'`
DIAGNOSTICS
If none of the patterns match, regex returns FALSE, otherwise TRUE.
NOTES
Patterns and templates must often be enclosed in single quotes to turn off the special meanings of characters. Especially if you use the
$m0 through $m9 variables in the template, since FMLI will expand the variables (usually to "") before regex even sees them.
Single characters in character classes (inside []) must be listed before character ranges, otherwise they will not be recognized. For exam-
ple, [a-zA-Z_/] will not find underscores (_) or slashes (/), but [_/a-zA-Z] will.
The regular expressions accepted by regcmp differ slightly from other utilities (that is, sed, grep, awk, ed, and so forth).
regex with the -e option forces subsequent commands to be ignored. In other words, if a backquoted statement appears as follows:
`regex -e ...; command1; command2`
command1 and command2 would never be executed. However, dividing the expression into two:
`regex -e ...``command1; command2`
would yield the desired result.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO awk(1), cut(1), grep(1), paste(1), sed(1), regcmp(3C), attributes(5)SunOS 5.10 12 Jul 1999 regex(1F)