Sponsored Content
Top Forums Shell Programming and Scripting Swap two characters in a string Post 303000585 by drl on Friday 14th of July 2017 04:05:15 PM
Old 07-14-2017
Hi.

This looks like it does what you wish:
Code:
$ cat z8; tr '_-' '-_' < z8
abc-def_hij-klm_nop-qrs_tuv-wxy_z
abc_def-hij_klm-nop_qrs-tuv_wxy-z

and
Code:
$ echo "$s" ; echo "$s" | tr '_-' '-_'
abc-def_hij-klm_nop-qrs_tuv-wxy_z
abc_def-hij_klm-nop_qrs-tuv_wxy-z

For a system like:
Code:
OS, ker|rel, machine: Linux, 3.16.0-4-amd64, x86_64
Distribution        : Debian 8.8 (jessie) 
tr (GNU coreutils) 8.23

Best wishes ... cheers, drl
This User Gave Thanks to drl For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Add string after another string with special characters

Hello everyone, I'm writing a script to add a string to an XML file, right after a specified string that only occurs once in the file. For testing purposes I created a file 'testfile' that looks like this: 1 2 3 4 5 6 6 7 8 9 And this is the script as far as I've managed: ... (2 Replies)
Discussion started by: heliode
2 Replies

2. UNIX for Advanced & Expert Users

split a string into 3 characters

Hi, I have a requirement like this. String=abcdefghijkl I need to split this string into a substrign each 3 characters and write output into a file. Output: abc def ghi jkl Can any one please help me how can i acheive this Thanks (3 Replies)
Discussion started by: ukatru
3 Replies

3. Shell Programming and Scripting

number of characters in a string

Hi there, I have some user input in a variable called $VAR, and i need to ensure that the string is 5 or less characters .... does anybody know how i can count the characters in the variables ? any help would be great, cheers (2 Replies)
Discussion started by: rethink
2 Replies

4. Shell Programming and Scripting

get certain characters in a string

Hi Everyone, I have a.txt 12341" <sip:191@vo.my>;asdf=q" 116aaaa<sip:00091@vo.my>;penguin would like to get the output 191 00091 Please advice. Thanks (4 Replies)
Discussion started by: jimmy_y
4 Replies

5. HP-UX

Swap device file and swap sapce

Hi I have an integrity machine rx7620 and rx8640 running hp-ux 11.31. I'm planning to fine tune the system: - I would like to know when does the memory swap space spill over to the device swap space? - And how much % of memory swap utilization should be specified (swap space device... (6 Replies)
Discussion started by: lamoul
6 Replies

6. Programming

Swap different size string

how can I write a function to swap to different sized string? (2 Replies)
Discussion started by: rupeshkp728
2 Replies

7. Shell Programming and Scripting

remove characters from string based on occurrence of a string

Hello Folks.. I need your help .. here the example of my problem..i know its easy..i don't all the commands in unix to do this especiallly sed...here my string.. dwc2_dfg_ajja_dfhhj_vw_dec2_dfgh_dwq desired output is.. dwc2_dfg_ajja_dfhhj it's a simple task with tail... (5 Replies)
Discussion started by: victor369
5 Replies

8. Linux

string characters in UNIX

I need some help. when i use the following command, it deletes all lines containing WINNT& v2010 and WINNT& v2010.2 I just want it to delete lines containing WINNT & v2010 only. perl -n -i.bak -e 'print unless /WINNT/&&/v2010/' *.* Danish (2 Replies)
Discussion started by: sdanish110
2 Replies

9. Shell Programming and Scripting

Cut a string for last 8 characters

Hello All I have a file like this abc.tpt.ctl bdc.tpt.ctl cdw.tpt.ctl I have looped every line using the for Loop, now I want to take each line and cut the .tpt.ctl part of it and store it in a variable and use the variable in same loop. The part I am stuck at is how do I cut the last... (9 Replies)
Discussion started by: nnani
9 Replies

10. Shell Programming and Scripting

Outputting characters after a given string and reporting the characters in the row below --sed

I have this fastq file: @M04961:22:000000000-B5VGJ:1:1101:9280:7106 1:N:0:86 GGGGGGGGGGGGCATGAAAACATACAAACCGTCTTTCCAGAAATTGTTCCAAGTATCGGCAACAGCTTTATCAATACCATGAAAAATATCAACCACACCA +test-1 GGGGGGGGGGGGGGGGGCCGGGGGFF,EDFFGEDFG,@DGGCGGEGGG7DCGGGF68CGFFFGGGG@CGDGFFDFEFEFF:30CGAFFDFEFF8CAF;;8... (10 Replies)
Discussion started by: Xterra
10 Replies
script(1)						      General Commands Manual							 script(1)

NAME
script - make typescript of terminal session SYNOPSIS
[file] DESCRIPTION
makes a typescript of everything printed on your terminal. It starts a shell named by the environment variable, or by default and silently records a copy of output to your terminal from that shell or its descendents, using a pseudo-terminal device (see pty(7)). All output is written to file, or appended to file if the option is given. If no file name is given, the output is saved in a file named The recording can be sent to a line printer later with lp(1), or reviewed safely with the option of cat(1). The recording ends when the forked shell exits (or the user ends the session by typing "exit") or the shell and all its descendents close the pseudo-terminal device. This program is useful when operating a CRT display and a hard-copy record of the dialog is desired. It can also be used for a simple form of session auditing. respects the convention for login shells as described in su(1), sh(1), and ksh(1). Thus, if it is invoked with a command name beginning with a hyphen (that is, passes a basename to the shell that is also preceded by a hyphen. The input flow control can be enabled by setting environmental variable before running Please see section for details on using this envi- ronment variable. EXAMPLES
Save everything printed on the user's screen into file Append a copy of everything printed to the user's screen to file WARNINGS
A command such as which displays the contents of the destination file, should not be issued while executing because it would cause to log the output of the command to itself until all available disk space is filled. Other commands, such as more(1), can cause the same problem but to a lesser degree. records all received output in the file, including typing errors, backspaces, and cursor motions. Note that it does not record typed char- acters; only echoed characters. Thus passwords are not recorded in the file. Responses other than simple echoes (such as output from screen-oriented editors and command editing) are recorded as they appeared in the original session. When there is no input flow control is not set), there can be some data loss while using However, script(1) can behave unexpectedly, if is set and is not set. AUTHOR
was developed by the University of California, Berkeley and HP. script(1)
All times are GMT -4. The time now is 02:44 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy