command substitution doubt Post: 302638117

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Substitution of last command

"Is there any substituation of last command or script syntax which can be used as a user. As far I know the "last" command is being used to display information about previous logins. A member of adm group or the user adm can execute it only. Thanks in advance for your usual help. Ghazi

2. UNIX for Dummies Questions & Answers

doubt in tr command

Hi, I am trying to understand a script and found a line as follows: tr '\211\233\240' '\040' < $IN_FILE | tr -cd '\11\12\15\40-\176' > $TEMP_FILE Can any one explain the above line .. What are they trying to translate using the tr command.. I have not used tr command.. so feeling little bit...

3. Shell Programming and Scripting

Difference between "Command substitution" and "Process substitution"

Hi, What is the actual difference between these two? Why the following code works for process substitution and fails for command substitution? while IFS= read -r line; do echo $line; done < <(cat file)executes successfully and display the contents of the file But, while IFS='\n' read -r...

4. UNIX for Dummies Questions & Answers

doubt in tar command

Hello sir, We can archive a file by :tar -cvf a.tar a.txt AND We can get it back by : tar -xvf a.tar I want to save the file extracted from a.tar into a specific location.How can I give the destination path in the above command ???

5. Shell Programming and Scripting

Doubt variable substitution

Hello everybody, I've written the following script: vOutputFile="subs_out.txt" vAccount1="ebsemerg" vAccount2="ebsemer2" vAccount3="ebsemer3" vAccount4="ebsemer4" vAccount5="ebsemer5" vAccount="vAccount" vNumber=1234567 cd /opt/east/bin echo ${print 'vAccount'${ind}} for (( ind =...

6. Shell Programming and Scripting

sed command doubt

i have input files like this SFE_DOC_DATE (SFE_DOC_DATE:UniChar.:): "04/18/20" SFE_PSTNG_DATE (SFE_PSTNG_DATE:UniChar.:): "04/18/20" SFE_CREATEDON (SFE_CREATEDON:UniChar.:): "05/31/20" SFE_CLEAR_DATE (SFE_CLEAR_DATE:UniChar.:): "(NULL)" SFE_CLR_DOC_NO...

7. UNIX for Dummies Questions & Answers

sed insert command and variable expansion/command substitution

I know this script is crummy, but I was just messing around.. how do I get sed's insert command to allow variable expansion to show the filename? #!/bin/bash filename=`echo $0` /usr/bin/sed '/#include/ { i\ the filename is `$filename` }' $1 exit 0

8. UNIX for Dummies Questions & Answers

read command - using output from command substitution

Hey, guys! Trying to research this is such a pain since the read command itself is a common word. Try searching "unix OR linux read command examples" or using the command substitution keyword. :eek: So, I wanted to use a command statement similar to the following. This is kinda taken...

9. UNIX for Dummies Questions & Answers

Doubt in ls command

dear users and experts, i am stuck withis command and i am unable to understand what is it doing?? ls -d *

10. Shell Programming and Scripting

Regarding command substitution

Oracle Linux 5.6, 64-bit Given the following snippet wrkvar=`sqlplus -s / as sysdba <<EOF set echo off feedback off head off trimsp on select count(*) from v\$parameter where name in ('db_file_name_convert','log_file_name_convert') and value is not null; EOF` echo wrkvar=$wrkvarProduces...

LEARN ABOUT DEBIAN

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Substitution of last command

Discussion started by: ghazi

2. UNIX for Dummies Questions & Answers

doubt in tr command

Discussion started by: risshanth

3. Shell Programming and Scripting

Difference between "Command substitution" and "Process substitution"

Discussion started by: royalibrahim

4. UNIX for Dummies Questions & Answers

doubt in tar command

Discussion started by: nsharath