Problem with sed in for loop, would appreciate some help
Dear expert users,
I am having trouble with this for loop, where I am editing a design file, replacing the subject, session and another parameter in the template design file.
When implementing the for loop, it did not do what I wanted it to, for example editing to {2014}/CAT_Run0[5] instead of my hoped-for 2014/CAT_Run05.
When I tried to run it line by line, replacing the first parameter (using $subj) worked fine (2013 -> 2014), but I got an error on the second (using $run), to me mysterious: sed: -i may not be used with stdin
Any clues here would be highly appreciated.
Last edited by rbatte1; 12-05-2019 at 09:31 AM..
Reason: Added ICODE tags
I have a hostnames file which has:
$ cat hostnames.txt
serverxx1
serverxx2
serverxx3
My script:
#!/bin/sh
fileA=build.xml
for i in ./hostnames.txt ; do
sed 's/createConfig machine="Machine"/createConfig machine=" '$i' "/g' "$fileA" > ./tmpfile
done
FileA has:
createConfig... (2 Replies)
dear guys,
I want to replace the beginning of some lines in a file by (,)
The sequence number of lines is located in a file named numbers
so, i used this simple script to do so, but it didn't work. it does'nt recognize the $j in the command sed
#! /bin/sh
for j in `cat numbers`
do
sed '$j... (6 Replies)
Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line.
... (1 Reply)
Hi there,
I have 1 file with different 144 lines and 144 files that I want to change with a sed.
What I want to do is to go trough the file with the 144 different lines take the line a replace a certain pattern with said in the first file of the folder where the 144 files are. Take the second... (3 Replies)
I have a file MAT.txt which contains the following data:
mat1.txt
mat2.txt
.
.
.
.
mat100.txt
I want to remove the '.txt' from every line and have an output file with the following data:
mat1
mat2
.
.
.
.
mat100
I know this can be done with sed easily for each line, but I do... (8 Replies)
Hi,
Please help me writing for loop to fetch data and store in variable from a text file which contains data as below:
12
46
56
5466
111
There are 40 lines of data...!!!!
I jus need all data from line no 4 to 40 ie data for 4,6,8......40. (2 Replies)
:wall:
I have a requirement to search a log file that never rotates for certain values. If I find them I pipe them to a another file. To log file is constanyl being appened with new lines and never rotating Easy so far.
The problem is I dont want to pipe out matches already seen before. ... (3 Replies)
Hello
I have a group of files
a1.profile a2.profile a3.profile a4.profile b1.profile b2.profile b3.profile b4.profile These files all have the same first line with a value s1 atop the columns
s1_context s1_ref s1_sample s1_% etc I am trying to use sed in a for loop to replace the s1 in the... (2 Replies)
Hi,
I have a file called 1.txt, I want to create 2.txt through 100.txt using a for loop. In each instance of the loop, I want to change all "1"'s in the text file to "2"s and so on...
I tried the code below to do this:
for i in {2..100}; do sed 's/1/$i/g' 1.txt > $i.txt; done
but it... (1 Reply)
Hi,
I work on Ab-initio ETL tool which is based on Unix. I made a small script which has two loop's one with in another. All the functionality is working for the first line of outer loop but when it comes to other lines of outer loop it is throwing error as command not found. Below is the... (4 Replies)
Discussion started by: Ravindra Swan
4 Replies
LEARN ABOUT OPENDARWIN
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)