Login or Register to Ask a Question and Join Our Community


UNIX for Advanced & Expert Users

[BASH] Read value of variable, but not comment on the same line

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users [BASH] Read value of variable, but not comment on the same line
# 8  
Old 08-30-2015
Awesome, thank you!

I try to avoid these escaped unicodes (or whatever its properly called/label'd), thought, on occasions i had to use it, i used to loop and print all numbers and look 'manualy' for the proper char.

By asking myself 'how did he get that', i got this up:
Code:
#!/bin/bash
get_char_num() { # CHAR
# Parses numbers 0 - 999 and checks their result
# for matches against passed CHAR
	PRE=000
	MAX=999
	C=0
	while [ $C -lt $MAX ]
	do	num="${PRE:${#C}}$C"
		[ "$(printf \\$num)" = "$1" ] && \
			echo "\\$num" && \
			break
		((C++))
	done
}
get_char_num "$1"

Or how do you actually get the escape numbers of chars?
hth & ty
# 9  
Old 08-30-2015
man ascii. The 047 is the octal representation of ' . It depends on what tools you're using, which representations those understand. awk does, bash does, look into the respective man page on how to enter string/char constants.
This User Gave Thanks to RudiC For This Post:
sea
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Using read to assign value to bash variable not working

Hi, I am attempting to assign the output of the following command, to two bash variables, var1 and var2 using "read," but it doesn't seem to be working. # openstack hypervisor stats show | awk -F'|' 'NR==14{print $2,$3}' vcpus 92 # echo $? 0 # openstack hypervisor... (4 Replies)
Discussion started by: sand1234
4 Replies

2. Shell Programming and Scripting

How to read the output of a command line by line and pass it as a variable?

Hi, I have some 2000 names in a table like below. Java Oracle/SQL ANSI SQL SQL,DWH,DB DB&Java And by using for loop in my code i am able to get a single word but if there is any special character or space then it is considering as a next line. I have to execute the below queries in... (10 Replies)
Discussion started by: Samah
10 Replies

3. Shell Programming and Scripting

Ksh: Read line parse characters into variable and remove the line if the date is older than 50 days

I have a test file with the following format, It contains the username_date when the user was locked from the database. $ cat lockedusers.txt TEST1_21062016 TEST2_02122015 TEST3_01032016 TEST4_01042016 I'm writing a ksh script and faced with this difficult scenario for my... (11 Replies)
Discussion started by: humble_learner
11 Replies

4. Shell Programming and Scripting

With script bash, read file line per line starting at the end

Hello, I'm works on Ubuntu server My goal : I would like to read file line per line, but i want to started at the end of file. Currently, I use instructions : while read line; do COMMAND done < /var/log/apache2/access.log But, the first line, i don't want this. The file is long... (5 Replies)
Discussion started by: Fuziion
5 Replies

5. Shell Programming and Scripting

[BASH] read 'line' issue with leading tabs and virtual line breaks

Heyas I'm trying to read/display a file its content and put borders around it (tui-cat / tui-cat -t(ypwriter). The typewriter-part is a 'bonus' but still has its own flaws, but thats for later. So in some way, i'm trying to rewrite cat using bash and other commands. But sadly it fails on... (2 Replies)
Discussion started by: sea
2 Replies

6. Shell Programming and Scripting

Bash script to read a file from particular line till required line and process

Hi All, Am trying to write wrapper shell/bash script on a utility tool for which i need to pass 2 files as arugment to execute utility tool. Wraper script am trying is to do with above metion 2 files. utility tool accepts : a. userinfo file : which contains username b. item file : which... (2 Replies)
Discussion started by: Optimus81
2 Replies

7. Shell Programming and Scripting

How to read a two files, line by line in UNIX script and how to assign shell variable to awk ..?

Input are file and file1 file contains store.bal product.bal category.bal admin.bal file1 contains flip.store.bal ::FFFF:BADC:CD28,::FFFF:558E:11C5,6,8,2,1,::FFFF:81C8:CA8B,::FFFF:BADC:CD28,1,0,0,0,::FFFF:81C8:11C5,2,1,0,0,::FFFF:81DC:3111,1,0,1,0 store.bal.... (2 Replies)
Discussion started by: veeruasu
2 Replies

8. Shell Programming and Scripting

How to read a file line by line and store it in a variable to execute a program ?

Hello, I am quite new in shell scripting and I would like to write a little scritp to run a program on some parameters files. all my parameters files are in the same directory, so pick them up with ls *.para >>dirafter that I have a dir file like that: param1.para param2.para etc... I... (2 Replies)
Discussion started by: shadok
2 Replies

9. Shell Programming and Scripting

bash: read file line by line (lines have '\0') - not full line has read???

I am using the while-loop to read a file. The file has lines with null-terminated strings (words, actually.) What I have by that reading - just a first word up to '\0'! I need to have whole string up to 'new line' - (LF, 10#10, 16#A) What I am doing wrong? #make file 'grb' with... (6 Replies)
Discussion started by: alex_5161
6 Replies

10. Shell Programming and Scripting

In bash, read to a variable with a default value to edit

My script needs to read a variable from the user. But before the user types the input, I want to give a default value so the user can edit the default value for input. How can I implement it? My script is something like: #!/bin/sh read -p 'Port number: ' -e port_number echo "Port... (7 Replies)
Discussion started by: pankai
7 Replies
Login or Register to Ask a Question