如果命令my_command具有以下输出: VAR1=some_value VAR2=other_value is可以调用 my_command from一个shell脚本,以便 VAR1 和 VAR2 are保存为环境变量?我尝试了以下几种方法,但没有一种有效: #!/bin/bash source my_command export `my_command` 但是,如果我手动输入 export `my_command` 在终端控制台中,...
while [ -n "$1" ]; do # Copy so we can modify it (can't modify $1) OPT="$1" # Detect argument termination if [ x"$OPT" = x"--" ]; then shift for OPT ; do REMAINS="$REMAINS \"$OPT\"" done break fi # Parse current opt while [ x"$OPT" != x"-" ] ; do case ...
this filename is ${BASH_SOURCE[0]} and my caller script/shell name was $0" fi return 0 else if [ "$1" = -v ]; then echo "I am not being sourced, my script/shell name was $0" fi return 1 fi } if am_I_sourced -v; then echo "Do ...
代码: #!/bin/bash EXISTS="" echo ${#EXISTS} #print size of string if [ -n $EXISTS ]; then echo "It exists!" else echo "It is empty." fi if [ -z $EXISTS ]; then echo "It is empty." else echo "It exists!" fi 输出: 0 It exists! It is empty. 来自man 浏览3提问于20...
while [ -n "$1" ]; do # Copy so we can modify it (can't modify $1) OPT="$1" # Detect argument termination if [ x"$OPT" = x"--" ]; then shift for OPT ; do REMAINS="$REMAINS \"$OPT\"" done break fi # Parse current opt while [ x"$OPT" != x"-" ] ; do case...
For example, the following code checks if any of my strings exists in the file: if grep -EFq "string1|string2|string3" file; then # there is at least one match fi How to check if all of them exist? Since we are just interested in the presence of all matches, we shoul...
However, the Linux time command has several versions. What are Bash time command versions? The two most commonly used shells in Linux are Bash and Zsh. These shells have built-in time command versions. To detect if “time” is a binary or inbuilt keyword in a Linux shell, you can use ...
check if variable exists if [[ "$phone_missing" ]]; then echo "phone_missing does exists" fi check if variable is longer than specific character limit if [[ ${#detect} -gt 8 ]] ; then echo "Greater than 8 characters we exit now..." exit 1 else echo "Good to go..." exit 0...
These should pick up the nvm command.Troubleshooting on macOSSince OS X 10.9, /usr/bin/git has been preset by Xcode command line tools, which means we can't properly detect if Git is installed or not. You need to manually install the Xcode command line tools before running the install ...
If given an existing yaml, will merge in its original whitelists, dedupe, and write them back into the file using an in-place edit. Useful because ArgoCD 2.2+ doesn't show resources that aren't explicitly allowed, such as ReplicaSets and Pods Pluto: pluto_detect_helm_materialize.sh -...