Hej guys,
I am trying to read a csv file line by line, save it's fields as variables per line so I can use them as parameters and execute stuff.
I am new to shell scripting and was just strictly following a tutorial. Somehow my version seems to ignore the loop. Any help?
TY!
Code:
#!/bin/bash
echo " I AM OUTSIDE THE LOOP"
infile="./calls.txt"
while IFS=',' read -r f1 f2
do
echo " I AM INSIDE THE LOOP"
foo=$f1
bar=$f2
#many program calls here
done < "$infile"
Execution is:
Code:
I AM OUTSIDE THE LOOP
Last edited by rbatte1; 08-08-2016 at 07:03 AM..
Reason: Changed ICODE tags to CODE tags
Hi All,
I'll get a file whose 2nd line contains 3 fields: filename(variable length), file size char(10), and record count int(10). How do I cut it and put it into 3 variables?
eg: abcd.csv01234567891111111111
now I want: $one = abcd.csv, $two = 0123456789, $three = 1111111111.
I also... (8 Replies)
I would like to make a script to read three variables (no fixed length or position) from a line and write them into a file, with fixed length and right-justified in each column. The fixed text (text1-text4) prior to the thee variables and the variables themselves are originally separated by spaces... (3 Replies)
I need to save my enviroment variables,specially the $PATH.When I put it on .cshrc at next reboot I lost the configuration.How can avoid this?Thanks (2 Replies)
I have one line files with 17 records separated by a semi-colon. I need to create a variable from each record, which I can do via a separate awk for each one, but I know there has to be a better way. Along with pulling out the variable, I need to convert some url coding like a + to a space, etc.... (4 Replies)
Hi All,
I have a file, let's call it "info.tmp" that contains data like this ..
ABC123456
PCX333445
BCD789833
I need to read "info.tmp" and for each line add strings in a way that the final output is
put /logs/ua/dummy.trigger 'AAA00001.FTP.XXX.BLA03A01.xxxxxx(+1)'
where XXX... (5 Replies)
Hey all,
Unfortunately I have only basic knowledge of awk and/or scripting. If I have a file with lines that can look similar to this:
Name=line1 Arg1=valueA Arg2=valueB Arg3=valueC
Name=line2 Arg1=valueD
Name=line3 Arg1=valueE Arg3=valueF
Name=line4 Arg2=valueG ... (4 Replies)
How can I read a string delimited on spaces and assign the fields to incremented variables.
For example:
Given $exts= txt dat mov
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Hi,
This is my first post here and I am a newbie. :)
I have a file that looks like this :
Introduction:Intro_123.html
Product definition:Prod_def.html
System Setup:SSetup-64bit.html
Setting up user accounts:Set_user_acc.html
I tried to create a script that would output "The filename... (3 Replies)
Hey guyz,
I have a table which shows the presence or absence of my variables (A,B,C,...) in my observations (1,2,3,...)
* A B C ...
1 1 0 1
2 1 1 0
3 1 0 0
...
I want to calculate the co-presence of my variables. to have a table shows the pairwise presence of the variables (have... (1 Reply)
Hello
Just edited the entry to make it easier to understand what i want
How can i achieve this: GOAL:
read 2 field from a table with PSQL
result of this PSQL command is this
INSTALLEDLANG=$(su - postgres -c "psql -A -t -q -c -d ${DBNAME} -t -c 'SELECT code, iso_code from res_lang'")
... (0 Replies)
Discussion started by: winston6071
0 Replies
LEARN ABOUT SUNOS
read
read(1) User Commands read(1)NAME
read - read a line from standard input
SYNOPSIS
/usr/bin/read [-r] var...
sh
read name...
csh
set variable = $<
ksh
read [ -prsu [n]] [ name ? prompt] [name...]
DESCRIPTION
/usr/bin/read
The read utility will read a single line from standard input.
By default, unless the -r option is specified, backslash () acts as an escape character. If standard input is a terminal device and the
invoking shell is interactive, read will prompt for a continuation line when:
o The shell reads an input line ending with a backslash, unless the -r option is specified.
o A here-document is not terminated after a NEWLINE character is entered.
The line will be split into fields as in the shell. The first field will be assigned to the first variable var, the second field to the
second variable var, and so forth. If there are fewer var operands specified than there are fields, the leftover fields and their interven-
ing separators will be assigned to the last var. If there are fewer fields than vars, the remaining vars will be set to empty strings.
The setting of variables specified by the var operands will affect the current shell execution environment. If it is called in a subshell
or separate utility execution environment, such as one of the following:
(read foo)
nohup read ...
find . -exec read ... ;
it will not affect the shell variables in the caller's environment.
The standard input must be a text file.
sh
One line is read from the standard input and, using the internal field separator, IFS (normally space or tab), to delimit word boundaries,
the first word is assigned to the first name, the second word to the second name, and so on, with leftover words assigned to the last name.
Lines can be continued using
ewline. Characters other than NEWLINE can be quoted by preceding them with a backslash. These backslashes
are removed before words are assigned to names, and no interpretation is done on the character that follows the backslash. The return code
is 0, unless an end-of-file is encountered.
csh
The notation:
set variable = $<
loads one line of standard input as the value for variable. (See csh(1)).
ksh
The shell input mechanism. One line is read and is broken up into fields using the characters in IFS as separators. The escape character,
(), is used to remove any special meaning for the next character and for line continuation. In raw mode, -r, the character is not
treated specially. The first field is assigned to the first name, the second field to the second name, and so on, with leftover fields
assigned to the last name. The -p option causes the input line to be taken from the input pipe of a process spawned by the shell using |&.
If the -s flag is present, the input will be saved as a command in the history file. The flag -u can be used to specify a one digit file
descriptor unit n to read from. The file descriptor can be opened with the exec special command. The default value of n is 0. If name is
omitted, REPLY is used as the default name. The exit status is 0 unless the input file is not open for reading or an end-of-file is encoun-
tered. An end-of-file with the -p option causes cleanup for this process so that another can be spawned. If the first argument contains a
?, the remainder of this word is used as a prompt on standard error when the shell is interactive. The exit status is 0 unless an end-of-
file is encountered.
OPTIONS
The following option is supported:
-r Does not treat a backslash character in any special way. Considers each backslash to be part of the input line.
OPERANDS
The following operand is supported:
var The name of an existing or non-existing shell variable.
EXAMPLES
Example 1: An example of the read command
The following example for /usr/bin/read prints a file with the first field of each line moved to the end of the line:
example% while read -r xx yy
do
printf "%s %s
" "$yy" "$xx"
done < input_file
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of read: LANG, LC_ALL, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
IFS Determines the internal field separators used to delimit fields.
PS2 Provides the prompt string that an interactive shell will write to standard error when a line ending with a backslash is read and
the -r option was not specified, or if a here-document is not terminated after a newline character is entered.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 End-of-file was detected or an error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), ksh(1), line(1), set(1), sh(1), attributes(5), environ(5), standards(5)SunOS 5.10 28 Mar 1995 read(1)
08-05-2016
