Linux – How to recall a specific command from command history, without executing it

bashlinux

For example, in bash I can type !xyz which will run the last command I typed beginning with xyz.

How can I bring up the last command I typed beginning with xyz but without executing it?
e.g so I can change parameters before execution….

Best Answer

You can do it like this: On the command prompt press Ctrl+r and then type the command you want to recall, in your case xyz. This will show you the complete command without executing it.

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Bash Scripting – How to Print Commands Before Execution

bash -x script

set -x

in the script.

You can unset the option again with set +x. If you just want to do it for a few commands you can use a subshell: `(set -x; command1; command; ...;)

Bash – Clean way to write complex multi-line string to a variable

This will put your text into your variable without needing to escape the quotes. It will also handle unbalanced quotes (apostrophes, i.e. '). Putting quotes around the sentinel (EOF) prevents the text from undergoing parameter expansion. The -d'' causes it to read multiple lines (ignore newlines). read is a Bash built-in so it doesn't require calling an external command such as cat.

IFS='' read -r -d '' String <<"EOF"
<?xml version="1.0" encoding='UTF-8'?>
 <painting>
   <img src="madonna.jpg" alt='Foligno Madonna, by Raphael'/>
   <caption>This is Raphael's "Foligno" Madonna, painted in
   <date>1511</date>-<date>1512</date>.</caption>
 </painting>
EOF

Best Answer

Related Solutions

Bash Scripting – How to Print Commands Before Execution

Bash – Clean way to write complex multi-line string to a variable

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